Ukinrek Maars

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Facts


  • Official Name: Ukinrek Maars
  • Seismically Monitored: Yes
  • Color Code: GREEN
  • Alert Level: NORMAL
  • Elevation: 91m (298ft)
  • Latitude: 57.8338
  • Longitude: -156.5139
  • Smithsonian VNum: 312131
  • Nearby Towns:
    • Kanatak 26 mi (41 km) SE
    • Ugashik 39 mi (64 km) SW
    • Egegik 41 mi (66 km) NW
    • Pilot Point 44 mi (70 km) SW
    • King Salmon 59 mi (95 km) NW

    Distance from Anchorage: 329 mi (529 km)

  • Subfeatures:
    • West Maar
    • East Maar

Description

From Miller and others (1998) [1] : "Ukinrek Maars are a pair of phreatomagmatic explosion vents that formed on a low (less than 100 m high), 4-km-long, ridge in the Bering Sea Lowland 1.5 km south of Becharof Lake and 12 km northwest of Peulik Volcano. West Maar, elliptical in shape and up to 170 m in diameter and 35 m deep, formed on the northwest end of the ridge [2] . East Maar lies 600 m east of West Maar at a lower elevation. It is circular, up to 300 m in diameter and 70 m deep, and has a 49-m-high central lava dome that is now partly covered by a crater lake. Location of the maars apparently coincides with, and may be controlled by, the intersection of the Bruin Bay fault and regional structures [2] [3] "

Name Origin

"Ukinrek" is a Yup'ik word meaning "two holes." This feature was named after its formation in 1977.


References Cited

[1] Catalog of the historically active volcanoes of Alaska, 1998

Miller, T. P., McGimsey, R. G., Richter, D. H., Riehle, J. R., Nye, C. J., Yount, M. E., and Dumoulin, J. A., 1998, Catalog of the historically active volcanoes of Alaska: U.S. Geological Survey Open-File Report 98-0582, 104 p.

[2] Ukinrek Maars, Alaska: I, April 1977 eruption sequence, petrology and tectonic setting, 1980

Kienle, Juergen, Kyle, P. R., Self, Stephen, Motyka, R. J., and Lorenz, Volker, 1980, Ukinrek Maars, Alaska: I, April 1977 eruption sequence, petrology and tectonic setting: Journal of Volcanology and Geothermal Research, v. 7, n. 1, p. 11-37.

[3] Generalized geologic map of the Ugashik, Bristol Bay, and part of the Karluk quadrangles, Alaska, 1983

Detterman, R. L., Case, J. E., Wilson, F. H., Yount, M. E., and Allaway, W. H. Jr., 1983, Generalized geologic map of the Ugashik, Bristol Bay, and part of the Karluk quadrangles, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF 1539-A, unpaged, 1 sheet, scale 1:250,000.

Current Activity

No new updates for Ukinrek Maars volcano since October 19, 2022, 3:05 pm.

Color Code Timeline

Reported Activity

Modern Eruptions

Ukinrek Maars

Ukinrek Maars Eruption Timeline

Phreatomagmatic eruption column rising from the east Ukinrek Maar crater at about 5:00
PM on April 6, 1977. View is to the southeast. Photograph by R. Russell, Alaska Department of Fish and Game, April 6, 1977.
Image courtesy of the photographer.
Phreatomagmatic eruption column rising from the east Ukinrek Maar crater at about 5:00 PM on April 6, 1977. View is to the southeast. Photograph by R. Russell, Alaska Department of Fish and Game, April 6, 1977.

Ukinrek Maars 1977/3

March 30, 1977 — April 9, 1977

From Kienle and others (1980): "The first explosions were observed on March 30, 1977, about 4:00 a.m. Alaska Standard Time (AST), from Egegik, 65 km northwest of the eruption site. A fine ash fall occurred that day at Larsen Bay, Kodiak Island, 160 km east of the maars, and a sulfurous haze layer lay over the city of Kodiak, 250 km to the east. Fine ash fell over some 20,000 - 25,000 square km, but significant ash accumulation was restricted to a radius of about 3 km from the maars. During the day, the Federal Aviation Administration (FAA) in King Salmon received reports from pilots of steam and ash columns reaching heights of 300-600 m. Two King Salmon pilots independently overflew the eruption site in the late afternoon (17:00 AST) and witnessed a steam and ash plume rising 1500 m before billowing out and eventually reaching about 6500 m, the maximum height reported during the eruptions. The source of the explosions was a single vent, 30-35 m in diameter, located at an elevation of approximately 70 m above sea level on a short ridge about 3 km southwest of Gas Rocks at the southern shore of Becharof Lake and called West Maar in this paper.
"Poor weather conditions prevented observations on March 31 and April 1, but at 11:00 AST, April 2, a commercial airline pilot observed a 3000-m-high ash plume in the vicinity of Gas Rocks. A new vent, about 60 m in diameter and located 600 m east of the original vent at about the same elevation, was discovered by an FAA pilot at 17:30 AST; the original vent had partially filled with water and was quiescent. The new vent was ringed by about seven tephra layers which were thickest on the NNE side of the crater rim.
"Reports indicate that the second crater, here called East Maar, had increased in diameter to about 100 m by 10:00 AST, April 3. At 14:30 AST Alaska Department of Fish and Game (ADFG) personnel photographed a yellowish-orange pool of lava at the bottom of the second crater. Another bush pilot observed that incandescent material was thrown up to 30 m above the lava pool and that large boulders, up to 1 m and more in diameter, were ejected to a height of 300 m.
"On April 4 the weather was poor and it snowed. In the late morning hours of April 5 an ash cloud up to 4000 m high reached King Salmon, 95 km to the north, where trace amounts of ash accumulated through mid-afternoon. At 16:30 AST, a spectacular eruption from East Maar was witnessed by ADFG personnel during a helicopter flight near Gas Rocks. The eruption cloud was initially of a white color, probably rich in steam and poor in solids, a phase which was followed by vigorous ejection of ash and rock debris, culminating in a mushroom-shaped cloud. The column was approximately 500 m in diameter near its base and reached a height of 3000 m before billowing out. This eruption was followed by a series of smaller phreatomagmatic explosions. Many of them had a companion ground wave (base surge?) of gas and tephra which appeared to be directed laterally down a trough leading to the WNW away from the crater. During the day wind-blown air fall ejecta was dispersed principally to the northwest and north.
"By mid-afternoon on April 6 fresh magma had apparently drained from the East Maar and the activity had decreased to steaming, with vapor plumes reaching heights of 1000 m. This milder activity allowed clearer examination of the East Maar at this stage of its development. Well-bedded tephra layers, amounting to a total thickness of several meters, surrounded the crater which was conically shaped but skewed, having a nearly vertical south-southeastern wall. The deepest part of the crater, and also the source of the initial eruptive activity, was at the base of this wall. Activity increased significantly by early evening when heavy steam and ash laden phreatomagmatic clouds were periodically ejected from East Maar.
"Magma had returned to the crater by 09:30 AST, April 7. During a University of Alaska (UA) overflight, an orange-red lava pool, about 20-30 m in diameter, was observed at the bottom of East Maar. Incandescent material was again thrown up to a height of about 30 m above the magma pool. Turbulent dark grey ash laden clouds were periodically (every 5 minutes) ejected from a second vent located northwest of the first vent but still within East Maar, with plumes rising to 1500 m. The quiet intervals were characterized by intense steaming. The source of the steam appeared to have been subsurface groundwater coming into contact with magma. * * * The height of the magma level within the crater was variable: during one 15-minute period, the magma completely drained from the crater, an ash explosion occurred, then the magma returned to its previous level, about 50-60 m below the southern rim of the crater. * * * No further eruptions were reported until the early morning hours of April 9, when a fisherman saw violent explosions from a distance of 30 km. These explosions marked the end of the eruption and subsequent activity was confined to steaming and degassing."
Kienle and others (1980) also estimate the total volume of erupted material: "A total bulk volume of 26x10^6 cubic m is probably an underestimate for the deposits within a 5-km radius of the maars. The volume of non-juvenile ejecta should be approximately that of the craters. East Maar is estimated to have a crater volume of 4x10^6 cubic m and that of West Maar is 0.25x10^6 cubic m. The dome in East Maar above the crater floor has a volume of 0.9x10^6 cubic m. The total volume of the ejecta represents perhaps 10x10^6 cubic m of dense rock which is substantially greater than the combined crater volume, 4.3x10^6 cubic m. The excess volume, 5.7x10^6 cubic m of dense rock, is mostly accounted for by that of juvenile airfall material."
Self and others (1980) provide more detailed estimates of the volumes of the erupted juvenile material: "The volume of the juvenile 'strombolian' deposit plus a rough estimate of the juvenile component of the other deposits gives a dense rock estimate of the order of 0.5x10^6 cubic m. The basalt lava flow extruded onto the floor of East Maar contains about 1x10^6 cubic m of dense rock. Hence, about 1.5 x10^6 cubic m were ejected in 11 days activity. For the lava flow alone a very slow extrusion rate of 1.8 cubic m s^-1 is indicated using 47 hours as the duration of the 'strombolian' phase.

Phreatomagmatic eruption column rising from the east Ukinrek Maar crater at about 5:00
PM on April 6, 1977. View is to the southeast. Photograph by R. Russell, Alaska Department of Fish and Game, April 6, 1977.
Image courtesy of the photographer.
Phreatomagmatic eruption column rising from the east Ukinrek Maar crater at about 5:00 PM on April 6, 1977. View is to the southeast. Photograph by R. Russell, Alaska Department of Fish and Game, April 6, 1977.

Ukinrek Maars 1977/3

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1 Event Date(s)

Past Activity Legend:
Eruption
Questionable eruption
Non-eruptive activity


Showing 1 - 20 of 40

Map Images


Map References


Recently active volcanoes of Alaska, 2023

Cameron, C.E., Bull, K.F., and Macpherson, A.E., 2023, Recently active volcanoes of Alaska: Alaska Division of Geological & Geophysical Surveys Miscellaneous Publication 133 v. 6, 2 sheets. https://doi.org/10.14509/31086.

Tephra occurrence in Alaska: a map-based compilation of stratigraphic tephra data, 2018

Worden, A.K., Schaefer, J.R., and Mulliken, K.M., 2018, Tephra occurrence in Alaska: a map-based compilation of stratigraphic tephra data: Alaska Division of Geological and Geophysical Surveys Miscellaneous Publication 165, 19 p., http://doi.org/10.14509/30059

Historically active volcanoes of Alaska, v. 3, 2018

Cameron, C.E., Schaefer, J.R., and Mulliken, K.M., 2018, Historically active volcanoes of Alaska: Alaska Division of Geological & Geophysical Surveys Miscellaneous Publication 133 v. 3, 2 sheets. Http://doi.org/10.14509/30142

Historically active volcanoes of Alaska, 2014

Schaefer, J.R., Cameron, C.E., and Nye, C.J., 2014, Historically active volcanoes of Alaska: Alaska Division of Geological & Geophysical Surveys Miscellaneous Publication 133 v. 1.2, 1 sheet, scale 1:3,000,000. This publication has been superseded. Newest version available at http://www.dggs.alaska.gov/pubs/id/20181 .

Geology of the Ugashik-Mount Peulik volcanic center, Alaska, 2004

Miller, T. P., 2004, Geology of the Ugashik-Mount Peulik volcanic center, Alaska: U.S. Geological Survey Open-File Report 2004-1009, 19 p., 2 sheets, scale 1:63,360.
full-text PDF 1.7 MB
plate 1 PDF 660 KB
plate 2 PDF 142 KB
Hard Copy held by AVO at FBKS - CEC shelf

Historically active volcanoes of the Aleutian Arc, 2002

Schaefer, Janet, and Nye, C. J., 2002, Historically active volcanoes of the Aleutian Arc: Alaska Division of Geological & Geophysical Surveys Miscellaneous Publication MP 0123, unpaged, 1 sheet, scale 1:3,000,000. Superceded by Miscellaneous Publication 133: http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=20181

Volcanoes of Alaska, 1998

Nye, C. J., Queen, Katherine, and McCarthy, A. M., 1998, Volcanoes of Alaska: Alaska Division of Geological & Geophysical Surveys Information Circular IC 0038, unpaged, 1 sheet, scale 1:4,000,000, available at http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=7043 .
Hard Copy held by AVO at FBKS - CEC shelf

Volcanoes of Alaska, 1995

Alaska Division of Geological & Geophysical Surveys, 1995, Volcanoes of Alaska: Alaska Division of Geological & Geophysical Surveys Information Circular IC 0038, unpaged, 1 sheet, scale 1:4,000,000.

Aleutian arc volcanoes, 1994

Nye, C. J., 1994, Aleutian arc volcanoes: Alaska Division of Geological & Geophysical Surveys Public-Data File PDF 94-54, unpaged, 1 sheet, scale 1:2,126,841.

Geothermal resources of the Aleutian Arc, 1993

Motyka, R. J., Liss, S. A., Nye, C. J., and Moorman, M. A., 1993, Geothermal resources of the Aleutian Arc: Alaska Division of Geological & Geophysical Surveys Professional Report PR 0114, 17 p., 4 sheets, scale 1:1,000,000.
Hard Copy held by AVO at FBKS - CEC shelf

Holocene volcanoes of the Aleutian Arc, Alaska, 1993

March, G. D., 1993, Holocene volcanoes of the Aleutian Arc, Alaska: Alaska Division of Geological & Geophysical Surveys Public-Data File PDF 93-85, unpaged, 1 sheet, scale 1:2,000,000.

Map and tables showing geochronology and whole-rock geochemistry of selected samples, Ugashik and part of Karluk quadrangles, Alaska, 1992

Wilson, F.H., and Shew, Nora, 1992, Map and tables showing geochronology and whole-rock geochemistry of selected samples, Ugashik and part of Karluk quadrangles, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-1539-E, 34 p., 2 sheets, scale 1:250,000.
Hard Copy held by AVO at FBKS - CEC file cabinet

Mineral and energy resource assessment maps of the Ugashik, Bristol Bay and western Karluk quadrangles, Alaska, 1989

Church, S. E., Detterman, R. L., and Wilson, F. H., 1989, Mineral and energy resource assessment maps of the Ugashik, Bristol Bay and western Karluk quadrangles, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF 1539-I, unpaged, 2 plates, scale 1:63,360.

Maps showing aeromagnetic survey and geologic interpretation of the Ugashik and part of the Karluk quadrangles, Alaska, 1988

Case, J. E., Detterman, R. L., Wilson, F. H., Chuchel, B. A., and Yount, M. E., 1988, Maps showing aeromagnetic survey and geologic interpretation of the Ugashik and part of the Karluk quadrangles, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF 1539-D, 12 p., 2 plates, scale 1:250,000.

Quaternary geologic map of the Ugashik, Bristol Bay, and western part of Karluk quadrangles, Alaska, 1987

Detterman, R. L., Wilson, F. H., Yount, M. E., and Miller, T. P., 1987, Quaternary geologic map of the Ugashik, Bristol Bay, and western part of Karluk quadrangles, Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I 1801, unpaged, 1 sheet, scale 1:250,000, available online at http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=12928 .

Geologic map of the Ugashik, Bristol Bay, and western part of Karluk quadrangle, Alaska, 1987

Detterman, R. L., Case, J. E., Wilson, F. H., and Yount, M. E., 1987, Geologic map of the Ugashik, Bristol Bay, and western part of Karluk quadrangle, Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I 1685, unpaged, 1 plate, scale 1:250,000.

Map showing distribution, composition, and age of Late Cenozoic volcanic centers in Alaska, 1986

Luedke, R. G., and Smith, R. L., 1986, Map showing distribution, composition, and age of Late Cenozoic volcanic centers in Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I 1091-F, unpaged, 3 sheets, scale 1:1,000,000.

Generalized geologic map of the Ugashik, Bristol Bay, and part of the Karluk quadrangles, Alaska, 1983

Detterman, R. L., Case, J. E., Wilson, F. H., Yount, M. E., and Allaway, W. H. Jr., 1983, Generalized geologic map of the Ugashik, Bristol Bay, and part of the Karluk quadrangles, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF 1539-A, unpaged, 1 sheet, scale 1:250,000.

Preliminary maps showing interpretation of Landsat imagery of the Ugashik and Karluk quadrangles, Alaska, 1981

LeCompte, J. R., 1981, Preliminary maps showing interpretation of Landsat imagery of the Ugashik and Karluk quadrangles, Alaska: U.S. Geological Survey Open-File Report 81-0776, unpaged, 2 plates, scale 1:250,000.

Geothermal energy resources of Alaska, 1980

Turner, D. L., Forbes, R. B., Albanese, Mary, Macbeth, Joyce, Lockhart, A. B., and Seed, S. M., 1980, Geothermal energy resources of Alaska: University of Alaska Fairbanks Geophysical Institute Report UAG-R 279, 19 p., 3 sheets, scale 1 at 1:2,500,000.

The Cold Bay-Chignik District, Alaska, 1924

Smith, W. R., and Baker, A. A., 1924, The Cold Bay-Chignik District, Alaska: U.S. Geological Survey Bulletin 0755-D, p. 151-222, 5 plates, scale 4 at 1:250,000 and 1 unknown.
full-text PDF 4.9 MB
plate 8 PDF 1.6 MB

References

Recently active volcanoes of Alaska, 2023

Cameron, C.E., Bull, K.F., and Macpherson, A.E., 2023, Recently active volcanoes of Alaska: Alaska Division of Geological & Geophysical Surveys Miscellaneous Publication 133 v. 6, 2 sheets. https://doi.org/10.14509/31086.

Alaska interagency operating plan for volcanic ash episodes, 2022

Alaska Volcano Observatory, National Oceanic and Atmospheric Administration, National Weather Service, Federal Aviation Administration, Department of Defense, United States Coast Guard, Division of Homeland Security and Emergency Management, Alaska Department of Environmental Conservation, and Alaska Department of Health and Social Services (participating agencies), 2022, Alaska interagency operating plan for volcanic ash episodes, 85 p.

Geologic database of information on volcanoes in Alaska (GeoDIVA), 2022

Cameron, C.E., Crass, S.W., and AVO Staff, eds, 2022, Geologic database of information on volcanoes in Alaska (GeoDIVA): Alaska Division of Geologic and Geophysical Surveys Digital Data Series 20, https://doi.org/10.14509/geodiva, https://doi.org/10.14509/30901.

Historically active volcanoes of Alaska, v. 4, 2020

Cameron, C.E., Schaefer, J.R., and Ekberg, P.G., 2020, Historically active volcanoes of Alaska: Alaska Division of Geological & Geophysical Surveys Miscellaneous Publication 133 v. 4, 2 sheets. Http://doi.org/10.14509/30426

Catalog of earthquake parameters and description of seismograph and infrasound stations at Alaskan volcanoes - January 1, 2013, through December 31, 2017, 2019

Dixon, J.P., Stihler S.D., Haney, M.M., Lyons, J.J., Ketner, D.M., Mulliken, K.M., Parker, T., and Power, J.A., 2019, Catalog of earthquake parameters and description of seismograph and infrasound stations at Alaskan volcanoes - January 1, 2013, through December 31, 2017: U.S. Geological Survey Data Series 1115, 92 p., https://doi.org/10.3133/ds1115.

A unified catalog of earthquake hypocenters and magnitudes at volcanoes in Alaska: 1989 to 2018, 2019

Power, J.A., Friberg, P.A., Haney, M.M., Parker, T., Stihler, S.D., and Dixon, J.P., 2019, A unified catalog of earthquake hypocenters and magnitudes at volcanoes in Alaska—1989 to 2018: U.S. Geological Survey Scientific Investigations Report 2019–5037, 17 p., https://doi.org/10.3133/sir20195037.

Geochemistry of some Quaternary lavas from the Aleutian Arc and Mt. Wrangell, 2018

Nye, C.J., Beget, J.E., Layer, P.W., Mangan, M.T., McConnell, V.S., McGimsey, R.G., Miller, T.P., Moore, R.B., and Stelling, P.L., 2018, Geochemistry of some quaternary lavas from the Aleutian Arc and Mt. Wrangell: Alaska Division of Geological & Geophysical Surveys Raw Data File 2018-1, 29 p. http://doi.org/10.14509/29843

Geospatial distribution of tephra fall in Alaska: a geodatabase compilation of published tephra fall occurrences from the Pleistocene to the present, 2018

Mulliken, K.M., Schaefer, J.R., and Cameron, C.E., 2018, Geospatial distribution of tephra fall in Alaska: a geodatabase compilation of published tephra fall occurrences from the Pleistocene to the present: Alaska Division of Geological & Geophysical Surveys Miscellaneous Publication 164, 46 p. http://doi.org/10.14509/29847

Tephra occurrence in Alaska: a map-based compilation of stratigraphic tephra data, 2018

Worden, A.K., Schaefer, J.R., and Mulliken, K.M., 2018, Tephra occurrence in Alaska: a map-based compilation of stratigraphic tephra data: Alaska Division of Geological and Geophysical Surveys Miscellaneous Publication 165, 19 p., http://doi.org/10.14509/30059

2018 update to the U.S. Geological Survey national volcanic threat assessment, 2018

Ewert, J.W., Diefenbach, A.K., and Ramsey, D.W., 2018, 2018 update to the U.S. Geological Survey national volcanic threat assessment: U.S. Geological Survey Scientific Investigations Report 2018-5140, 40 p., https://pubs.usgs.gov/sir/2018/5140/sir20185140.pdf.

Linking the Ukinrek 1977 maar-eruption observations to the tephra deposits: new insights into maar depositional processes, 2018

Ort, M.H., Lefebvre, N.S., Neal, C.A., McConnell, V.S., and Wohletz, K.H., 2018, Linking the Ukinrek 1977 maar-eruption observations to the tephra deposits: new insights into maar depositional processes: Journal of Volcanology and Geothermal Research, v, 360, p. 36-60, doi:10.1016/j.jvolgeores.2018.07.005

Historically active volcanoes of Alaska, v. 3, 2018

Cameron, C.E., Schaefer, J.R., and Mulliken, K.M., 2018, Historically active volcanoes of Alaska: Alaska Division of Geological & Geophysical Surveys Miscellaneous Publication 133 v. 3, 2 sheets. Http://doi.org/10.14509/30142

Historically active volcanoes of Alaska, 2016

Cameron, C.E., and Schaefer, J.R., 2016, Historically active volcanoes of Alaska: Alaska Division of Geological & Geophysical Surveys Miscellaneous Publication 133 v. 2, 1 sheet, scale 1:3,000,000. http://doi.org/10.14509/20181

Alaska Volcano Observatory image database, 2016

Cameron, C.E., and Snedigar, S.F., 2016, Alaska Volcano Observatory image database: Alaska Division of Geological & Geophysical Surveys Digital Data Series 13, https://www.avo.alaska.edu/images/. https://doi.org/10.14509/29689.

Aleutian arc geothermal fluids: chemical analyses of waters and gases, 2015

Evans, W.C., Bergfeld, D., Neal, C.A., McGimsey, R.G., Werner, C.A., Waythomas, C.F., Lewicki, J.L., Lopez, T., Mangan, M.T., Miller, T.P., Diefenbach, A., Schaefer, J., Coombs, M.L., Wang, B., Nicolaysen, K., Izbekov, P., Maharrey, Z., Huebner, M., Hunt, A.G., Fitzpatrick, J., and Freeburg, G., 2015, Aleutian Arc geothermal fluids: chemical analyses of waters and gases: U.S. Geological Survey Data release, http://dx.doi.org/10.5066/F74X55VB

Historically active volcanoes of Alaska, 2014

Schaefer, J.R., Cameron, C.E., and Nye, C.J., 2014, Historically active volcanoes of Alaska: Alaska Division of Geological & Geophysical Surveys Miscellaneous Publication 133 v. 1.2, 1 sheet, scale 1:3,000,000. This publication has been superseded. Newest version available at http://www.dggs.alaska.gov/pubs/id/20181 .

Regional controls on volcano seismicity along the Aleutian Arc, 2014

Buurman, Helena, Nye, C.J., West, M.E., and Cameron, Cheryl, 2014, Regional controls on volcano seismicity along the Aleutian Arc: Geochemistry, Geophysics, Geosystems, doi:10.1002/2013GC005101

Preliminary database of Quaternary vents in Alaska, 2014

Cameron, C.E., and Nye, C.J., 2014, Preliminary database of Quaternary vents in Alaska: Alaska Division of Geological & Geophysical Surveys Miscellaneous Publication 153, 11 p., doi:10.14509/27357 .

Catalog of earthquake hypocenters at Alaskan volcanoes: January 1 through December 31, 2012, 2013

Dixon, J.P., Stihler, S.D, Power, J.A., Haney, Matt, Parker, Tom, Searcy, C.K., and Prejean, Stephanie, 2013, Catalog of earthquake hypocenters at Alaskan volcanoes: January 1 through December 31, 2012: U.S. Geological Survey Data Series 789, 84 p., available at http://pubs.usgs.gov/ds/789/ .
full-text pdf 6.5 MB

Catalog of earthquake hypocenters at Alaskan volcanoes: January 1 through December 31, 2011, 2012

Dixon, J.P., Stihler, S.D., Power, J.A., and Searcy, C.K., 2012, Catalog of earthquake hypocenters at Alaskan volcanoes: January 1 through December 31, 2011: U.S. Geological Survey Data Series 730, 82 p., available online at http://pubs.usgs.gov/ds/730/pdf/ds730.pdf .

Catalog of earthquake hypocenters at Alaskan volcanoes: January 1 through December 31, 2010, 2011

Dixon, J.P., Stihler, S.D., Power, J.A., and Searcy, C.K., 2011, Catalog of earthquake hypocenters at Alaskan volcanoes: January 1 through December 31, 2010: U.S. Geological Survey Data Series 645, 82 p., available online at http://pubs.usgs.gov/ds/645/

A geophysical characterization of monogenetic volcanism, 2011

de la Cruz Reyna, Servando, and Yokoyama, Izumi, 2011, A geophysical characterization of monogenetic volcanism: Geofisica Internacional, v. 50, n. 4, p. 465-484, available online at http://www.geofisica.unam.mx/unid_apoyo/editorial/publicaciones/investigacion/geofisica_internacional/anteriores/2011/04/8servando.pdf .

Catalog of earthquake hypocenters at Alaskan volcanoes: January 1 through December 31, 2009, 2010

Dixon, J.P., Stihler, S.D., Power, J.A., and Searcy, C.K., 2010, Catalog of earthquake hypocenters at Alaskan volcanoes: January 1 through December 31, 2009: U.S. Geological Survey Data Series 531, 84 p., available online at http://pubs.usgs.gov/ds/531/ .

210Pb-226Ra disequilibria in volcanic rocks, 2010

Berlo, Kim, and Turner, Simon, 2010, 210Pb-226Ra disequilibria in volcanic rocks: Earth and Planetary Science Letters, v. 296, p. 155-164, doi:10.1016/j.epsl.2010.05.023

Catalog of earthquake hypocenters at Alaskan volcanoes: January 1 through December 31, 2008, 2009

Dixon, J.P., and Stihler, S.D., 2009, Catalog of earthquake hypocenters at Alaskan volcanoes: January 1 through December 31, 2008: U.S. Geological Survey Data Series 467, 88 p., available at http://pubs.usgs.gov/ds/467/ .

Historically active volcanoes of Alaska reference deck, 2009

Snedigar, S.F., and Cameron, C.C., 2009, Historically active volcanoes of Alaska reference deck: Alaska Division of Geological & Geophysical Surveys Information Circular 59, 52 p, available to order from http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=20401 .

Diffuse gas emissions at the Ukinrek Maars, Alaska: implications for magmatic degassing and volcanic monitoring, 2009

Evans, W.C., Bergfeld, Deborah, McGimsey, R.G., and Hunt, A.G., 2009, Diffuse gas emissions at the Ukinrek Maars, Alaska: implications for magmatic degassing and volcanic monitoring: Applied Geochemistry, v. 24, n. 4, p. 527-535, doi: 10.1016/j.apgeochem.2008.12.007 .

Chronology and references of volcanic eruptions and selected unrest in the United States, 1980-2008, 2009

Diefenbach, A.K., Guffanti, Marianne, and Ewert, J.W., 2009, Chronology and references of volcanic eruptions and selected unrest in the United States, 1980-2008: U.S. Geological Survey Open-File Report 2009-1118, 85 p., available at http://pubs.usgs.gov/of/2009/1118/ .

Preliminary spreadsheet of eruption source parameters for volcanoes of the world, 2009

Mastin, L.G., Guffanti, Marianne, Ewert, J.E., and Spiegel, Jessica, 2009, Preliminary spreadsheet of eruption source parameters for volcanoes of the world: U.S. Geological Survey Open-File Report 2009-1133, v. 1.2, 25 p., available at http://pubs.usgs.gov/of/2009/1133/ .

Catalog of earthquake hypocenters at Alaskan volcanoes: January 1 through December 31, 2006, 2008

Dixon, J.P., Stihler, S.D., Power, J.A., and Searcy, Cheryl, 2008, Catalog of earthquake hypocenters at Alaskan volcanoes: January 1 through December 31, 2006: U.S. Geological Survey Data Series 326, 79 p., available at http://pubs.usgs.gov/ds/326/ .

The Alaska Volcano Observatory - 20 years of volcano research, monitoring, and eruption response, 2008

Schaefer, J.R., and Nye, Chris, 2008, The Alaska Volcano Observatory - 20 years of volcano research, monitoring, and eruption response: Alaska Division of Geological & Geophysical Surveys, Alaska GeoSurvey News, NL 2008-001, v. 11, n. 1, p. 1-9, available at http://wwwdggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=16061 .

Catalog of earthquake hypocenters at Alaskan volcanoes: January 1 through December 31, 2007, 2008

Dixon, J.P., Stihler, S.D. and Power, J.A., 2008, Catalog of earthquake hypocenters at Alaskan volcanoes: January 1 through December 31, 2007: U.S. Geological Survey Data Series 367, 82 p., available online at http://pubs.usgs.gov/ds/367/ .

Magmatic gas efflux at the Ukinrek Maars, Alaska, 2007

Evans, W.C., Bergfield, D., McGimsey, R.G., and Hunt, A.G., 2007, Magmatic gas efflux at the Ukinrek Maars, Alaska: in Bullen, T.D., and Wang, Y., eds., Water-Rock Interactions 12, v. 1, Taylor and Francis, London, p. 65-69.

System for ranking relative threats of U.S. volcanoes, 2007

Ewert, John, 2007, System for ranking relative threats of U.S. volcanoes: Natural Hazards Review, v. 8, n. 4, p. 112-124.

A compilation of gas emission-rate data from volcanoes of Cook Inlet (Spurr, Crater Peak, Redoubt, Iliamna, and Augustine) and Alaska Peninsula (Douglas, Fourpeaked, Griggs, Mageik, Martin, Peulik, Ukinrek Maars, and Veniaminof), Alaska, from 1995-2006, 2007

Doukas, M.P., and McGee, K.A., 2007, A compilation of gas emission-rate data from volcanoes of Cook Inlet (Spurr, Crater Peak, Redoubt, Iliamna, and Augustine) and Alaska Peninsula (Douglas, Fourpeaked, Griggs, Mageik, Martin, Peulik, Ukinrek Maars, and Veniaminof), Alaska, from 1995-2006: U.S. Geological Survey Open-File Report 2007-1400, 13 p., available at http://pubs.usgs.gov/of/2007/1400/ .

Blue Mountain and The Gas Rocks: rear-arc dome clusters on the Alaska Peninsula, 2007

Hildreth, Wes, Fierstein, Judy, and Calvert, A.T., 2007, Blue Mountain and The Gas Rocks; rear-arc dome clusters on the Alaska Peninsula: in Haeussler, P.J., and Galloway, J.P., eds., Studies by the U.S. Geological Survey in Alaska, U.S. Geological Survey Professional Paper 1739-A, 27 p., available at http://pubs.usgs.gov/pp/pp1739/a/ .
Hard Copy held by AVO at FBKS - CEC file cabinet

Catalog of earthquake hypocenters at Alaskan volcanoes: January 1 through December 31, 2005, 2006

Dixon, J.P., Stihler, S.D., Power, J.A., Tytgat, Guy, Estes, Steve, and McNutt, S.R., 2006, Catalog of earthquake hypocenters at Alaskan volcanoes: January 1 through December 31, 2005: U.S. Geological Survey Open-File Report 2006-1264, 78 p., available at http://pubs.usgs.gov/of/2006/1264/ .

An assessment of volcanic threat and monitoring capabilities in the United States: framework for a National Volcano Early Warning System NVEWS, 2005

Ewert, J.W., Guffanti, Marianne, and Murray, T.L., 2005, An assessment of volcanic threat and monitoring capabilities in the United States: framework for a National Volcano Early Warning System NVEWS: U.S. Geological Survey Open-File Report 2005-1164, 62 p.
full-text PDF 2.90 MB

Rear-arc vs. arc-front volcanoes in the Katmai reach of the Alaska Peninsula: a critical apprasial of across-arc compositional variation, 2004

Hildreth, Wes, Fierstein, Judy, Siems, D. F., Budahn, J. R., and Ruiz, Joaquin, 2004, Rear-arc vs. arc-front volcanoes in the Katmai reach of the Alaska Peninsula: a critical apprasial of across-arc compositional variation: Contributions to Mineralogy and Petrology, v. 147, n. 3, p. 243-275.
Hard Copy held by AVO at FBKS - CEC file cabinet

Geology of the Ugashik-Mount Peulik volcanic center, Alaska, 2004

Miller, T. P., 2004, Geology of the Ugashik-Mount Peulik volcanic center, Alaska: U.S. Geological Survey Open-File Report 2004-1009, 19 p., 2 sheets, scale 1:63,360.
full-text PDF 1.7 MB
plate 1 PDF 660 KB
plate 2 PDF 142 KB
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210Pb-226Ra and 228Ra-232Th systematics in young arc lavas: implications for magma degassing and ascent rates, 2004

Turner, Simon, Black, Stuart, and Berlo, Kim, 2004, 210Pb-226Ra and 228Ra-232Th systematics in young arc lavas: implications for magma degassing and ascent rates: Earth and Planetary Science Letters, v. 227, n. 1-2, p. 1-16, doi: 10.1016/j.epsl.2004.08.017

Volcanoes of the world: an illustrated catalog of Holocene volcanoes and their eruptions, 2003

Siebert, L., and Simkin, T., 2002-, Volcanoes of the world: an illustrated catalog of Holocene volcanoes and their eruptions: Smithsonian Institution, Global Volcanism Program Digital Information Series GVP-3, http://volcano.si.edu/search_volcano.cfm, unpaged internet resource.

Bibliography of information on Alaska volcanoes, 2003

Cameron, C. E., Triplehorn, J. H., and Robar, C. L., 2003, Bibliography of information on Alaska volcanoes: Alaska Division of Geological & Geophysical Surveys Miscellaneous Publication MP 131, 1 CD-ROM.
Hard Copy held by AVO at FBKS - CEC file cabinet

1998 volcanic activity in Alaska and Kamchatka: Summary of events and response of the Alaska Volcano Observatory, 2003

McGimsey, R. G., Neal, C. A., and Girina, Olga, 2003, 1998 volcanic activity in Alaska and Kamchatka: Summary of events and response of the Alaska Volcano Observatory: U.S. Geological Survey Open-File Report 03-0423, 35 p.
full-text PDF 1.40 MB
Hard Copy held by AVO at FBKS - CEC file cabinet

Historically active volcanoes of the Aleutian Arc, 2002

Schaefer, Janet, and Nye, C. J., 2002, Historically active volcanoes of the Aleutian Arc: Alaska Division of Geological & Geophysical Surveys Miscellaneous Publication MP 0123, unpaged, 1 sheet, scale 1:3,000,000. Superceded by Miscellaneous Publication 133: http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=20181

Historically active volcanoes in Alaska, a quick reference, 2000

Wallace, K. L., McGimsey, R. G., and Miller, T. P., 2000, Historically active volcanoes in Alaska, a quick reference: U.S. Geological Survey Fact Sheet FS 0118-00, 2 p.
full-text PDF 162 KB
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Encyclopedia of volcanoes, 2000

Sigurdsson, Haraldur, (ed.), 2000, Encyclopedia of volcanoes: San Diego, CA, Academic Press, 1417 p.

Along-arc U-Th-Ra systematics in the Aleutians, 1999

George, R. M., Turner, Simon, Hawkesworth, Chris, and Nye, C. J., 1999, Along-arc U-Th-Ra systematics in the Aleutians [abs.]: Eos, v. 80, n. 46, p. 1202.

Volcanoes of Alaska, 1998

Nye, C. J., Queen, Katherine, and McCarthy, A. M., 1998, Volcanoes of Alaska: Alaska Division of Geological & Geophysical Surveys Information Circular IC 0038, unpaged, 1 sheet, scale 1:4,000,000, available at http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=7043 .
Hard Copy held by AVO at FBKS - CEC shelf

Catalog of the historically active volcanoes of Alaska, 1998

Miller, T. P., McGimsey, R. G., Richter, D. H., Riehle, J. R., Nye, C. J., Yount, M. E., and Dumoulin, J. A., 1998, Catalog of the historically active volcanoes of Alaska: U.S. Geological Survey Open-File Report 98-0582, 104 p.
Hard Copy held by AVO at FBKS - CEC shelf

Ukinrek Maars, 1998

Smithsonian Institution, 1998, Ukinrek Maars: Global Volcanism Network Bulletin v. 23, n. 04, unpaged.

Ukinrek Maars, 1998

Smithsonian Institution, 1998, Ukinrek Maars: Global Volcanism Network Bulletin v. 23, n. 05, unpaged.

May-August 1998, 1998

Alaska Volcano Observatory, 1998, May-August 1998: Alaska Volcano Observatory Bimonthly Report, v. 10, n. 3 and 4, 43 p.
Part 1PDF 847 KB
Part 2 PDF 630 KB
Part 3 PDF 2.2 MB

Investigations of gas seeps and springs in the vicinity of The Gas Rocks, south shore Becharof Lake, Alaska, 1997

Symonds, R. B., Ritchie, B. E., McGimsey, R. G., Ort, M. H., Poreda, R. J., Evans, W. C., and Janik, C. J., 1997, Investigations of gas seeps and springs in the vicinity of The Gas Rocks, south shore Becharof Lake, Alaska: U.S. Geological Survey Open-File Report 97-0127, 27 p.

Volcanoes of the Alaska Peninsula and Aleutian Islands selected photographs, 1997

Neal, Christina, and McGimsey, R. G., 1997, Volcanoes of the Alaska Peninsula and Aleutian Islands selected photographs: U.S. Geological Survey Digital Data Series DDS 0040, 1 CD-ROM.

Preliminary report on the 1995 Gas Seep and Spring sampling in the vicinity of Gas Rocks, South Shore Becharof Lake, 1996

Symonds, R. B., Ritchie, B. E., McGimsey, R. G., and Ort, M. O., 1996, Preliminary report on the 1995 Gas Seep and Spring sampling in the vicinity of Gas Rocks, South Shore Becharof Lake: U.S. Geological Survey Open File Report, p. unknown.

Mechanics of magma/ water interaction, Ukinrek Maars, Alaska, 1995

Ort, M. H., Wohletz, K. H., Neal, C. A., and McConnell, V. S., 1995, Mechanics of magma/ water interaction, Ukinrek Maars, Alaska [abs.]: in International Union of Geodesy and Geophysics, General Assembly, 21, International Union of Geodesy and Geophysics: XXI general assembly; abstracts, Boulder, CO, July 2-14, 1995, Week A, p. 467.

Quick reference to Alaska's active volcanoes and listing of historical eruptions, 1760-1994, 1995

McGimsey, R. G., and Miller, T. P., 1995, Quick reference to Alaska's active volcanoes and listing of historical eruptions, 1760-1994: U.S. Geological Survey Open-File Report 95-0520, 13 p.
Hard Copy held by AVO at FBKS - CEC file cabinet

Volcanoes of Alaska, 1995

Alaska Division of Geological & Geophysical Surveys, 1995, Volcanoes of Alaska: Alaska Division of Geological & Geophysical Surveys Information Circular IC 0038, unpaged, 1 sheet, scale 1:4,000,000.

Complex interactions of ground water and basaltic magma during the eruption of the Ukinrek maars, Alaska, 1994

Ort, M. H., Wohletz, K. H., and Neal, C. A., 1994, Complex interactions of ground water and basaltic magma during the eruption of the Ukinrek maars, Alaska [abs.]: Abstracts with Programs - Geological Society of America, v. 26, n. 7, p. 378.

Age, character, and significance of Aleutian arc volcanism, 1994

Fournelle, J. H., Marsh, B. D., and Myers, J. D., 1994, Age, character, and significance of Aleutian arc volcanism: in Plafker, George and Berg, H. C., (eds.), The Geology of Alaska, Geological Society of America The Geology of North America Series v. G-1, p. 723-758.

Quaternary volcanism in the Alaska Peninsula and Wrangell Mountains, Alaska, 1994

Miller, T. P., and Richter, D. H., 1994, Quaternary volcanism in the Alaska Peninsula and Wrangell Mountains, Alaska: in Plafker, George, Jones, D. L., and Berg, H. C., (eds.), The Geology of Alaska, Geological Society of America The Geology of North America series v. G-1, p. 759-779.
Hard Copy held by AVO at FBKS - CEC file cabinet

Volcanoes of the world [2nd edition], 1994

Simkin, Tom, and Siebert, Lee, 1994, Volcanoes of the world [2nd edition]: Tucson, Arizona, Geoscience Press, 349 p.
Hard Copy held by AVO at FBKS - CEC shelf

Aleutian arc volcanoes, 1994

Nye, C. J., 1994, Aleutian arc volcanoes: Alaska Division of Geological & Geophysical Surveys Public-Data File PDF 94-54, unpaged, 1 sheet, scale 1:2,126,841.

Effects of prevailing wind on the distribution of surge and fallout deposits an Ukinrek Maars, Alaska, 1993

Ort, M. H., Neal, C. A., McConnell, V. S., Wohletz, K. H., Duffield, W. A., and Lescinsky, D. T., 1993, Effects of prevailing wind on the distribution of surge and fallout deposits an Ukinrek Maars, Alaska [abs.]: Eos, v. 74, n. 43, p. 639.

Geothermal resources of the Aleutian Arc, 1993

Motyka, R. J., Liss, S. A., Nye, C. J., and Moorman, M. A., 1993, Geothermal resources of the Aleutian Arc: Alaska Division of Geological & Geophysical Surveys Professional Report PR 0114, 17 p., 4 sheets, scale 1:1,000,000.
Hard Copy held by AVO at FBKS - CEC shelf

Syn- and post-eruptive mechanism of the Alaskan Ukinrek maars in 1977, 1993

Buechel, G., and Lorenz, V., 1993, Syn- and post-eruptive mechanism of the Alaskan Ukinrek maars in 1977: in Negendank, J. F. W. and Zolitschka, Bernd, (eds.), Paleolimnology of European maar lakes, Bitburg, Federal Republic of Germany, May 21-25, 1991, Lecture Notes in Earth Sciences, v. 49, p. 15-60.

Explosive volcanic eruptions-VII. The ranges of pyroclasts ejected in transient volcanic explosions, 1993

Fagents, S. A., 1993, Explosive volcanic eruptions-VII. The ranges of pyroclasts ejected in transient volcanic explosions: Geophysical Journal International, v. 113, n. 2, p. 359-370.

Holocene volcanoes of the Aleutian Arc, Alaska, 1993

March, G. D., 1993, Holocene volcanoes of the Aleutian Arc, Alaska: Alaska Division of Geological & Geophysical Surveys Public-Data File PDF 93-85, unpaged, 1 sheet, scale 1:2,000,000.

Map and tables showing geochronology and whole-rock geochemistry of selected samples, Ugashik and part of Karluk quadrangles, Alaska, 1992

Wilson, F.H., and Shew, Nora, 1992, Map and tables showing geochronology and whole-rock geochemistry of selected samples, Ugashik and part of Karluk quadrangles, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-1539-E, 34 p., 2 sheets, scale 1:250,000.
Hard Copy held by AVO at FBKS - CEC file cabinet

Alaska's volcanoes, 1991

Rennick, Penny, (ed.), 1991, Alaska's volcanoes: Alaska Geographic, v. 18, n. 2, 80 p.
Hard Copy held by AVO at FBKS - CEC file cabinet

Alaska's volcanoes - an introduction, 1991

Unknown, 1991, Alaska's volcanoes - an introduction: in Rennick, Penny, (ed.), Alaska's volcanoes, Alaska Geographic, v. 18, n. 2, p. 5-9.

The Alaska Mineral Resource Assessment Program: background information to accompany folio of geologic and resource maps of the Ugashik, Bristol Bay, and western Karluk quadrangles, Alaska, 1990

Detterman, R. L., Case, J. E., Church, S. E., Frisken, J. G., Wilson, F. H., and Yount, M. E., 1990, The Alaska Mineral Resource Assessment Program: background information to accompany folio of geologic and resource maps of the Ugashik, Bristol Bay, and western Karluk quadrangles, Alaska: U.S. Geological Survey Circular C 1046, 14 p.

Th isotope and U-series studies of subduction-related volcanic rocks, 1990

Gill, J. B., and Williams, R. W., 1990, Th isotope and U-series studies of subduction-related volcanic rocks: Geochimica et Cosmochimica Acta, v. 54, p. 1427-1442.

Volcanoes of North America: United States and Canada, 1990

Wood, C. A., and Kienle, Juergen, (eds.), 1990, Volcanoes of North America: United States and Canada: New York, Cambridge University Press, 354 p.
Hard Copy held by AVO at FBKS - CEC shelf

Mineral and energy resource assessment maps of the Ugashik, Bristol Bay and western Karluk quadrangles, Alaska, 1989

Church, S. E., Detterman, R. L., and Wilson, F. H., 1989, Mineral and energy resource assessment maps of the Ugashik, Bristol Bay and western Karluk quadrangles, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF 1539-I, unpaged, 2 plates, scale 1:63,360.

Maps showing aeromagnetic survey and geologic interpretation of the Ugashik and part of the Karluk quadrangles, Alaska, 1988

Case, J. E., Detterman, R. L., Wilson, F. H., Chuchel, B. A., and Yount, M. E., 1988, Maps showing aeromagnetic survey and geologic interpretation of the Ugashik and part of the Karluk quadrangles, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF 1539-D, 12 p., 2 plates, scale 1:250,000.

Quaternary geologic map of the Ugashik, Bristol Bay, and western part of Karluk quadrangles, Alaska, 1987

Detterman, R. L., Wilson, F. H., Yount, M. E., and Miller, T. P., 1987, Quaternary geologic map of the Ugashik, Bristol Bay, and western part of Karluk quadrangles, Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I 1801, unpaged, 1 sheet, scale 1:250,000, available online at http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=12928 .

Geologic map of the Ugashik, Bristol Bay, and western part of Karluk quadrangle, Alaska, 1987

Detterman, R. L., Case, J. E., Wilson, F. H., and Yount, M. E., 1987, Geologic map of the Ugashik, Bristol Bay, and western part of Karluk quadrangle, Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I 1685, unpaged, 1 plate, scale 1:250,000.

Seismicity, tectonics, and geohazards of the Gulf of Alaska, 1986

Jacob, K. H., 1986, Seismicity, tectonics, and geohazards of the Gulf of Alaska: in Hood, D. W. and Zimmerman, S. T., (eds.), The Gulf of Alaska: physical environment and biological recourses, Washington, DC, U.S. Department of Commerce & U.S. Department of the Interior, p. 145-184.

Map showing distribution, composition, and age of Late Cenozoic volcanic centers in Alaska, 1986

Luedke, R. G., and Smith, R. L., 1986, Map showing distribution, composition, and age of Late Cenozoic volcanic centers in Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I 1091-F, unpaged, 3 sheets, scale 1:1,000,000.

Two-stage volcanism at the Ugashik-Peulik volcanic center, Alaska Peninsula, 1984

Miller, T. P., 1984, Two-stage volcanism at the Ugashik-Peulik volcanic center, Alaska Peninsula [abs.]: Abstracts with Programs - Geological Society of America, v. 16, p. 322.

Generalized geologic map of the Ugashik, Bristol Bay, and part of the Karluk quadrangles, Alaska, 1983

Detterman, R. L., Case, J. E., Wilson, F. H., Yount, M. E., and Allaway, W. H. Jr., 1983, Generalized geologic map of the Ugashik, Bristol Bay, and part of the Karluk quadrangles, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF 1539-A, unpaged, 1 sheet, scale 1:250,000.

Magmatism and subduction in the eastern Aleutian Arc, 1983

Kienle, J., Swanson, S. E., and Pulpan, H., 1983, Magmatism and subduction in the eastern Aleutian Arc: in Shimozuru, D. and Yokoyama, I., (eds.), Arc volcanism: physics and tectonics, IAVCEI symposium, Proceedings, Tokyo and Hakone, Japan, Aug. 3l -Sept. 5, 1981, Tokyo, Terra Scientific Publishing Co., p. 191-224.
Hard Copy held by AVO at FBKS - CEC file cabinet

Volcanism in the eastern Aleutian Arc: late Quaternary and Holocene centers, tectonic setting and petrology, 1983

Kienle, Juergen, and Swanson, S. E., 1983, Volcanism in the eastern Aleutian Arc: late Quaternary and Holocene centers, tectonic setting and petrology: Journal of Volcanology and Geothermal Research, v. 17, n. 1-4, p. 393-432.
Hard Copy held by AVO at FBKS - CEC file cabinet

Preliminary results of potassium-argon age determinations from the Ugashik Quadrangle, Alaska Peninsula, 1982

Wilson, F. H., and Shew, Nora, 1982, Preliminary results of potassium-argon age determinations from the Ugashik Quadrangle, Alaska Peninsula: in Coonrad, W. L., (ed.), The United States Geological Survey in Alaska: accomplishments in 1980 U.S. Geological Survey Circular C 0844, p. 86-87.

The 1977 explosive eruptions of the Ukinrek Maars, Alaska, 1982

Lorenz, V., 1982, The 1977 explosive eruptions of the Ukinrek Maars, Alaska [abs.]: Terra Cognita, v. 2, n. 3, p. 205-206.
Hard Copy held by AVO at FBKS - CEC file cabinet

Volcanoes of the world, 1981

Simkin, Tom, Siebert, Lee, McClelland, Lindsay, Bridge, David, Newhall, Christopher, and Latter, J. H., 1981, Volcanoes of the world: Stroudsburg, PA, Hutchinson Publishing Company, 233 p.

Preliminary maps showing interpretation of Landsat imagery of the Ugashik and Karluk quadrangles, Alaska, 1981

LeCompte, J. R., 1981, Preliminary maps showing interpretation of Landsat imagery of the Ugashik and Karluk quadrangles, Alaska: U.S. Geological Survey Open-File Report 81-0776, unpaged, 2 plates, scale 1:250,000.

Assessment of thermal springs sites, Aleutian arc, Atka Island to Becharof Lake-preliminary results and evaluation, 1981

Motyka, R. J., Moorman, M. A., and Liss, S. A., 1981, Assessment of thermal springs sites, Aleutian arc, Atka Island to Becharof Lake-preliminary results and evaluation: Alaska Division of Geological & Geophysical Surveys Open-File Report AOF 0144, 173 p.
Hard Copy held by AVO at FBKS - CEC shelf

Ukinrek Maars, Alaska: I, April 1977 eruption sequence, petrology and tectonic setting, 1980

Kienle, Juergen, Kyle, P. R., Self, Stephen, Motyka, R. J., and Lorenz, Volker, 1980, Ukinrek Maars, Alaska: I, April 1977 eruption sequence, petrology and tectonic setting: Journal of Volcanology and Geothermal Research, v. 7, n. 1, p. 11-37.
Hard Copy held by AVO at FBKS - CEC file cabinet

Ukinrek Maars, Alaska: II, Deposits and formation of the 1977 craters, 1980

Self, S., Kienle, J., and Huot, J. P., 1980, Ukinrek Maars, Alaska: II, Deposits and formation of the 1977 craters: Journal of Volcanology and Geothermal Research, v. 7, n. 1-2, p. 39-65.
Hard Copy held by AVO at FBKS - CEC file cabinet

Geothermal energy resources of Alaska, 1980

Turner, D. L., Forbes, R. B., Albanese, Mary, Macbeth, Joyce, Lockhart, A. B., and Seed, S. M., 1980, Geothermal energy resources of Alaska: University of Alaska Fairbanks Geophysical Institute Report UAG-R 279, 19 p., 3 sheets, scale 1 at 1:2,500,000.

Possible role of mantle-derived CO2 in causing two "phreatic" explosions in Alaska, 1979

Barnes, I., and McCoy, G. A., 1979, Possible role of mantle-derived CO2 in causing two "phreatic" explosions in Alaska: Geology, v. 7, n. 9, p. 434-435.
Hard Copy held by AVO at FBKS - CEC file cabinet

Calc-alkaline plutonism along the Pacific rim of southern Alaska, 1979

Hudson, Travis, 1979, Calc-alkaline plutonism along the Pacific rim of southern Alaska: U.S. Geological Survey Open-File Report 79-0953, 31 p.

Ukinrek Maars, 1979

Shackelford, D. C., 1979, Ukinrek Maars: in Annual report of the world volcanic eruptions in 1977, Bulletin of Volcanic Eruptions, v. 17, p. 60-61.
Hard Copy held by AVO at FBKS - CEC file cabinet

Formation of 2 maars behind the Aleutian volcanic arc, in April, 1977, 1978

Kienle, J., Self, S., Motyka, R. J., Huot, J. P., and Lalla, D. J., 1978, Formation of 2 maars behind the Aleutian volcanic arc, in April, 1977 [abs.]: Abstracts with Programs - Geological Society of America, v. 10, n. 3, p. 112.
Hard Copy held by AVO at FBKS - CEC file cabinet

Mechanisms and deposits of the 1977 Ukinrek maar-forming eruption, Alaska Peninsula, 1978

Self, Stephen, Kienle, J., and Huot, J. P., 1978, Mechanisms and deposits of the 1977 Ukinrek maar-forming eruption, Alaska Peninsula [abs.]: Abstracts with Programs - Geological Society of America, v. 10, n. 7, p. 489.
Hard Copy held by AVO at FBKS - CEC file cabinet

Formation of two maars behind the Aleutian volcanic arc, Alaska Peninsula, April 1977, preliminary results: field reconnaissance, geochemistry and seismicity, 1978

Kienle, J., Motyka, R. J., Lalla, D. J., Estes, S. A., and Huot, J. P., 1978, Formation of two maars behind the Aleutian volcanic arc, Alaska Peninsula, April 1977, preliminary results: field reconnaissance, geochemistry and seismicity: University of Alaska Fairbanks Geophysical Institute Report UAG-R 257, 26 p.

Comprehensive tables giving physical data and thermal energy estimates for young igneous systems of the United States, 1978

Smith, R. L., Shaw, H. R., Luedke, R. G., and Russell, S. L., 1978, Comprehensive tables giving physical data and thermal energy estimates for young igneous systems of the United States: U.S. Geological Survey Open-File Report 78-0925, p. 1-25.
Hard Copy held by AVO at FBKS - CEC shelf

Ukinrek Maars, 1977

Smithsonian Institution, 1977, Ukinrek Maars: Scientific Event Alert Network Bulletin v. 02, n. 03, unpaged.

Ukinrek Maars, 1977

Smithsonian Institution, 1977, Ukinrek Maars: Scientific Event Alert Network Bulletin v. 02, n. 04, unpaged.

Ukinrek Maars, 1977

Smithsonian Institution, 1977, Ukinrek Maars: Scientific Event Alert Network Bulletin v. 02, n. 05, unpaged.

Scientists keep tabs on volcano, 1977

Associated Press, 1977, Scientists keep tabs on volcano: Anchorage Daily News article published April 22, 1977.
Hard Copy held by AVO at FBKS - CEC file cabinet

Volcano a ‘treat’ for scientist, 1977

Associated Press, 1977, Volcano a ‘treat’ for scientist: Anchorage Daily News article published April 9, 1977.
Hard Copy held by AVO at FBKS - CEC file cabinet

The Cold Bay-Chignik District, Alaska, 1924

Smith, W. R., and Baker, A. A., 1924, The Cold Bay-Chignik District, Alaska: U.S. Geological Survey Bulletin 0755-D, p. 151-222, 5 plates, scale 4 at 1:250,000 and 1 unknown.
full-text PDF 4.9 MB
plate 8 PDF 1.6 MB

Ash Forecasting

Mathematical models developed by the USGS forecast various aspects of how a volcanic ash plume will interact with wind—where, how high, and how fast ash particles will be transported in the atmosphere, as well as where ash will fall out and accumulate on the ground. AVO runs these models when a volcano is restless by assuming a reasonable hypothetical eruption, to provide a pre-eruptive forecast of areas likely to be affected. During an ongoing eruption, AVO will update the forecast with actual observations (eruption start time and duration, plume height) as they become available.

View the current airborne ash cloud models for Ukinrek Maars

Ashfall thickness forecast

The Ash3d model was developed by the USGS to forecast how a volcanic ash plume will interact with wind and where ash will fall out and accumulate on the ground. AVO runs these models twice daily when a volcano is restless by assuming a reasonable hypothetical eruption altitude and duration. The map shows the model results of ashfall thickness for areas that are likely to be affected, if one were to occur. During an ongoing eruption, AVO will update the forecast with actual observations (eruption start time and duration, plume height) as they become available, and these plots will be automatically updated. The National Weather Service Anchorage Forecast Office will issue the official ashfall warning product and post them at weather.gov/afc

THESE PRODUCTS MAY NOT BE CURRENT.

During an actual eruption, see National Weather Service forecasts of ashfall:https://weather.gov/afc.

Ashfall Forecast

Click on the X on the graphic (upper right) to expand the map to show the map legend.

Ashfall Start Time

This map shows the modeled estimate of the time it would take for ashfall to begin following an eruption. It corresponds to the ashfall thickness forecast map shown above. This map uses the start time of either the twice-daily hypothetical model runs (time shown in the legend) or the actual eruption start time (if one were to occur). In the case of an actual eruption, the National Weather Service Anchorage Forecast Office will issue the official ashfall warning product that includes the ashfall start time and post them at weather.gov/afc

THESE PRODUCTS MAY NOT BE CURRENT.

During an actual eruption, see National Weather Service forecasts of ashfall:https://weather.gov/afc.

Ashfall Start Times Forecast

Click on the X on the graphic (upper right) to expand the map to show the map legend.
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