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AVO STAFF DIRECTORY
AVO is a very extended family. Some people work full time for the observatory, others well under half time. Others perform essential work, but only draw operating expenses. Several agencies contribute personnel at several locations. A wide variety of disciplines are represented, including geophysics, geology, glaciology, hydrology, geochemistry, remote sensing, computing, electronics, and administration. The following people are the paid staff, and share among themselves about 22 Full Time Equivalent positions.

[List staff by discipline] [List staff alphabetically] [List staff by office location]
* When listing staff by discipline, some individuals may be listed more than once.

Jim Beget
Department: Geophysical Institute and Dept. of Geology and Geophysics
Institute: UAF/GI
Address: Fairbanks, AK 99775-5780
Discipline(s):Geology
Tephra
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Jim has been involved with AVO since its founding in 1988, and also receives research support from the National Science Foundation, NASA, and the National Park system. He is a past president of the Commission on Tephrochronology and Volcanology of the International Quaternary Association (INQUA-COTAV), and is a current member of the Leader's Group of the Past Global Climate Change Program of the International Geosphere-Biosphere Project (IGBP-PAGES), researching Volcano-Climate Interactions and the U.S. National Quaternary Committee, sponsored by the National Research Council. His AVO research program emphasizes volcanic hazards, and includes tephra studes, reconstructions of volcano eruption histories, and volcanic tsunamis. His fieldwork has included projects at Augustine, Redoubt, Spurr, Iliamna, Douglass, Katmai, Shishaldin Makushin, Okmok, and other volcanoes in the eastern Aleutian arc, as well as volcanoes in Japan, Kamchatka, Iceland, Italy and other areas.

McIntire, Jacqueline, Ramsey, D.W., Thoms, Evan, Waitt, R.B., and Begét, J.E., 2012, Database for volcanic processes and geology of Augustine Volcano, Alaska: database for Professional Paper 1762: U.S. Geological Survey Data Series 677. Available at http://pubs.usgs.gov/ds/677/
Download link to data on USGS website

Montanaro, C., and Beget, J., 2011, Volcano collapse along the Aleutian Ridge (western Aleutian Arc): Natural Hazards and Earth System Sciences, v. 11, n. 3., p. 715-730, available online at http://www.nat-hazards-earth-syst-sci.net/11/715/2011/nhess-11-715-2011.pdf .
Download PDF open access link to publication
Download PDF full-text pdf : 915 KB

citation imageJensen, B.J.L., Preece, S.J., Lamothe, Michel, Pearce, N.J.G., Froese, D.G., Westgate, J.A., Schaefer, Janet, and Beget, Jim, 2011, The variegated (VT) tephra: A new regional marker for middle to late marine isotope stage 5 across Yukon and Alaska: Quaternary International, v. 246, p. 312-323, doi: 10.1016/j.quaint.2011.06.028.
http://dx.doi.org/10.1016/j.quaint.2011.06.028

Beget, J.E., 2010, Characterizing pyroclastic-flow interactions with snow and water using environmental magnetism at Augustine Volcano, chapter 11 of Power, J.A., Coombs, M.L., and Freymueller, J.T., eds., The 2006 eruption of Augustine Volcano, Alaska: U.S. Geological Survey Professional Paper 1769, p. 269-283 [http://pubs.usgs.gov/pp/1769/chapters/p1769_chapter11.pdf].
Download PDF chapter PDF on USGS website

citation imageAddison, J.A., Beget, J.E., Ager, T.A., and Finney, B.P., 2010, Marine tephrochronology of the Mt. Edgecumbe Volcanic Field, Southeast Alaska, USA: Quaternary Research, v. 73, p. 277-292, doi: 10.1016/j.yqres.2009.10.007 .
http://dx.doi.org/10.1016/j.yqres.2009.10.007

Waitt, R.B., and Beget, J.E., 2009, Volcanic processes and geology of Augustine Volcano, Alaska: U.S. Geological Survey Professional Paper 1762, 78 p., 2 plates, scale 1:25,000, available at http://pubs.usgs.gov/pp/1762/ .
Download link to USGS website with links to PDFs of text and sheets

citation imageBeget, J.E., and Kargel, J.S., 2008, Volcanoes and permafrost in Bering Land Bridge National Preserve, arctic Alaska: Alaska Park Science, National Park Service, v. 7, n. 1, p. 33-37.
Download PDF full-text PDF : 390 KB

citation imageBeget, James, Gardner, Cynthia, and Davis, Kathleen, 2008, Volcanic tsunamis and prehistoric cultural transitions in Cook Inlet, Alaska: Journal of Volcanology and Geothermal Research v, 176, p. 377-386, doi:10.1016/j.jvolgeores.2008.01.034 .
http://dx.doi.org/10.1016/j.jvolgeores.2008.01.034

citation imageLarsen, J. F., Neal, Christina, Schaefer, Janet, Beget, Jim, and Nye, Chris, 2007, Late Pleistocene and Holocene caldera-forming eruptions of Okmok Caldera, Aleutian Islands, Alaska, in Eichelberger, John, Gordeev, Evgenii, Izbekov, Pavel, Kasahara, Minoru, and Lees, Jonathan, eds., Volcanism and Subduction: The Kamchatka Region: Geophysical Monograph 172, American Geophysical Union, p. 343-364.

citation imageBeget, J.E., and Kowalik, Zygmunt, 2006, Confirmation and calibration of computer modeling of tsunamis produced by Augustine Volcano, Alaska: Science of Tsunami Hazards, v. 24, n. 4, p. 257-267, available for download at http://www.sthjournal.org/244/beget.pdf.
Download PDF full-text PDF : 832 KB

Keskinen, M.J., and Beget, J., 2006, Proximal tsunami deposits produced during the 1883 eruption of Augustine Volcano, Alaska [abs.]: Eos, Joint Assembly Supplement, v. 87, abstract PP43B-1245.

citation imageBeget, J.E., Larsen, J.F., Neal, C.A., Nye, C.J., and Schaefer, J.R., 2005, Preliminary volcano-hazard assessment for Okmok Volcano, Umnak Island, Alaska: Alaska Division of Geological & Geophysical Surveys Report of Investigation 2004-3, 32 p., 1 sheet, scale 1:150,000.
Download PDF full text of report : 3.4 MB
Download PDF map sheet : 53.2 MB
Download link to all files for this report on DGGS website

Odorczuk, Diana, Finney, Bruce, and Beget, James, 2005, Holocene tephrochronology of Sanak Island, Alaska [abs.]: Abstracts with Programs - Geological Society of America, v. 37, n. 7, p. 38.

Bowes, M.J., Heiser, P.A., Beget, James, and Wallace, Kristi, 2005, Preliminary results for interbasin correlation of tephra deposits in Lake Clark National Park, Alaska [abs.]: Abstracts with Programs - Geological Society of America, v. 37, n. 7, p. 38.

citation imageStelling, P., Gardner, J. E., and Beget, J., 2005, Eruptive history of Fisher Caldera, Alaska, USA: Journal of Volcanology and Geothermal Research, v. 139, no. 3-4, p. 163-183.

Beget, J. E., and Keskinen, M. J., 2003, Trace-element geochemistry of individual glass shards of the Old Crow Tephra and the age of the Delta glaciation, central Alaska: in Westgate, J. A., (ed.), Special issue dedicated to Troy Pewe, Quaternary Research, v. 60, n. 1, p. 63-69.

Matheus, Paul, Beget, J. E., Mason, O. K., and Gelvin-Reymiller, Carol, 2003, Late Pliocene to late Pleistocene environments preserved at the Palisades Site, central Yukon River, Alaska: in Westgate, J. A., (ed.), Special issue dedicated to Troy Pewe, Quaternary Research, v. 60, n. 1, p. 33-43.

citation imageBeget, J. E., Nye, C. J., Schaefer, J. R., and Stelling, P. L., 2002, Preliminary volcano-hazard assessment for Shishaldin Volcano, Alaska: Alaska Division of Geological & Geophysical Surveys Report of Investigations RI 2002-4, 28 p., 1 sheet, scale 1:500,000.
Download PDF full-text PDF : 2.25 MB

Wolfe, B. A., and Beget, J. E., 2002, Destruction of an Aleut village by a catastrophic flood release from Okmok caldera, Umnak Island, Alaska [abs.]: Abstracts with Programs - Geological Society of America, v. 34, n. 6, p. unknown.

Stelling, P., Beget, J., Nye, C., Gardner, J., Devine, J. D., and George, R. M. M., 2002, Geology and petrology of ejecta from the 1999 eruption of Shishaldin Volcano, Alaska: Bulletin of Volcanology, v. 64, n. 8, p. 548-561.

Beget, J. E., 2001, Continuous late Quaternary proxy climate records from loess in Beringia: Quaternary Science Reviews, v. 20, n. 1-3, p. 499-507.

citation imageWaythomas, C. F., Miller, T. P., and Beget, J. E., 2000, Record of Late Holocene debris avalanches and lahars at Iliamna Volcano, Alaska: Journal of Volcanology and Geothermal Research, v. 104, n. 1, p. 97-130.

citation imageBeget, J. E., Nye, C. J., and Bean, K. W., 2000, Preliminary volcano-hazard assessment for Makushin Volcano, Alaska: Alaska Division of Geological & Geophysical Surveys Report of Investigations RI 2000-4, 22 p., 1 sheet, scale 1:100,000.
Download PDF full-text PDF : .87 MB
Download PDF map sheet plate : 7.68 MB

Schaefer, J. R. G., Layer, P. W., Beget, J. E., and Drake, Jeff, 2000, (super 40) Ar/ (super 39) Ar dating of Quaternary low-potassium hornblende from a fine-grained Alaskan tephra by total laser-fusion [abs.]: Eos, v. 81, n. 48, p. 1375-1376.

Elias, S. E., Hamilton, T. D., Edwards, M. E., Beget, J. E., Krumhardt, A. P., and Lavoie, C., 1999, Late Pleistocene environments of the western Noatak basin, northwestern Alaska: Geological Society of America Bulletin, v. 111, p. 769-789.

Anders, A. M., and Beget, J. E., 1999, Giant landslides and coeval tsunamis in lower Cook Inlet, Alaska [abs.]: Abstracts with Programs - Geological Society of America, v. 31, n. 7, p. 48.

Beget, James, Nye, C. J., Gardner, James, Devine, Joe, and Stelling, Peter, 1999, Deposits of the 1999 eruptions of Shishaldin Volcano, Unimak Island, Alaska [abs.]: Eos, v. 80, n. 46, p. 1147.

citation imageBeget, J. E., and Motyka, R. J., 1998, New dates on Late Pleistocene dacitic tephra from the Mount Edgecumbe volcanic field, southeastern Alaska: Quaternary Research, v. 49, n. 1, p. 123-125.

Beget, J. E., Nye, C., and Stelling, P., 1998, Postglacial collapse and regrowth of Shishaldin Volcano, Alaska, requires sustained high eruption rates [abs.]: in Eos, v. 79, n. 17, p. 359.

McConnell, V. S., Beget, J. E., Roach, A. L., Bean, K. W., and Nye, C. J., 1998, Geologic map of the Makushin volcanic field, Unalaska Island, Alaska: Alaska Division of Geological & Geophysical Surveys Report of Investigations RI 97-20, unpaged, 2 sheets, scale 1:63,360.
Download MrSID website with links to sheets in MrSID format

Beget, J. E., Layer, P. W., and Flowers, B., 1997, Tephrochronology and geochronology of the largest maars on earth, northern Alaska [abs.]: in IAVCEI General Assembly, Abstracts, p. 21.

Beget, J. E., Hopkins, D. M., and Charron, S. D., 1996, The largest known maars on earth, Seward Peninsula, northwest Alaska: Arctic, v. 49, n. 1, Calgary, AB, Canada, Arctic Institute of North America, p. 62-69.

Miller, T. P., Beget, J. E., Stephens, C. D., and Moore, R. B., 1996, Geology and hazards of Iliamna Volcano, Alaska [abs.]: Eos, v. 77, n. 46, p. 815.

Bean, K. W., and Beget, J. E., 1996, Frequent Holocene explosive eruptions at Makushin Volcano, Aleutian Islands, Alaska [abs.]: Eos, v. 77, n. 46, p. 771.

citation imageWaitt, R. B., and Beget, J. E., 1996, Provisional geologic map of Augustine Volcano, Alaska: U.S. Geological Survey Open-File Report OF 96-0516, 44 p., 1 plate, scale 1:25,000.
Download DJVU online format; requires free plugin
Download map in GIF format : 21 KB
Download PDF full-text PDF : 2.6 MB
Download Tiff map sheet : 295 MB!

Beget, James, 1996, Dendrochronologic, archeologic, and radiocarbon data on Recent eruptions of Iliamna and Augustine volcanoes, Alaska [abs.]: Eos, v. 77, n. 46, p. 814.

Beget, J. E., 1995, Tephrochronologic correlations between Quaternary loess and glacial sequences, Alaska [abs.]: Geological Society of America - Abstracts with Programs, v. 27, n. 6, p. 61.

citation imageSiebert, Lee, Beget, J. E., and Glicken, Harry, 1995, The 1883 and late-prehistoric eruptions of Augustine volcano, Alaska: Journal of Volcanology and Geothermal Research, v. 66, n. 1, p. 367-395.

Beget, J. E., 1995, Multiple Quaternary eruptive centers and widespread tephras in Alaska: Abstracts with Programs - Geological Society of America, v. 27, n. 5, p. 5.

Beget, J. E., 1994, Volcanic eruptions and tsunami generation in the eastern Aleutian arc: the geologic record [abs.]: Abstracts with Programs - Geological Society of America, v. 26, n. 7, p. A138.

Kienle, J., Kowalik, Z., and Beget, J. E., 1994, Tsunamis from Mt. St. Augustine: genesis, hazards, travel-times, amplitudes and recurrence rates [abs.]: in Middle East Technical University, Dept. of Geological Engineering Special Publication 0002, IAVCEI, International Volcanological Congress, Abstracts, Ankara, Turkey, 1994, unpaged.

citation imageBeget, J. E., Stihler, S. D., and Stone, D. B., 1994, A 500-year-long record of tephra falls from Redoubt volcano and other volcanoes in upper Cook Inlet, Alaska: in Miller, T. P. and Chouet, B. A., (eds.), The 1989-1990 eruptions of Redoubt Volcano, Alaska, Journal of Volcanology and Geothermal Research, v. 62, n. 1-4, p. 55-67.

citation imageBeget, J. E., and Nye, C. J., 1994, Postglacial eruption history of Redoubt volcano, Alaska: in Miller, T. P. and Chouet, B. A., (eds.), The 1989-1990 eruptions of Redoubt Volcano, Alaska, Journal of Volcanology and Geothermal Research, v. 62, n. 1, p. 31-54.

Beget, J. E., and Pinney, DeAnne, 1994, Tephrochronology of Late Quaternary glacial moraines in the Valley of Ten Thousand Smokes, Katmai, Alaska [abs.]: Abstracts with Programs - Geological Society of America, v. 26, n. 7, p. A513.

citation imageSwanson, S. E., and Beget, J. E., 1994, Melting properties of volcanic ash: in Casadevall, T. J., (ed.), Volcanic ash and aviation safety: proceedings of the First international symposium on Volcanic ash and aviation safety, U.S. Geological Survey Bulletin B 2047, p. 87-92.
Download PDF full-text PDF : 210 KB

Stihler, S. D., Stone, D. B., and Beget, J. E., 1993, Reply to the comment by Jirikowic, J.L. and Sonett, C.P. on Varve counting vs. tephrochronology, Cs-137, and Pb-210 dating: A comparative test at Skilak Lake, Alaska: Geology, v. 21, p. 763-764.

Beget, J. E., 1993, Calderas produced by hydromagmatic eruptions through permafrost in Northwest Alaska [abs.]: in Kargel, J. S., Moore, Jeffrey, and Parker, Timothy, (eds.), Workshop on the Martian northern plains; Sedimentological, periglacial, and paleoclimatic evolution, Lunar and Planetary Institute Technical Report 93-04, Fairbanks, AK, Aug. 12-14, 1993, Part 1, p. 3.

citation imageBeget, J. E., and Kienle, J., 1992, Cyclic formation of debris avalanches at Mount St Augustine volcano: Nature, v. 356, n. 6371, p. 701-704.

citation imageBeget, J. E., 1992, Tephrochronology of Mt. St. Augustine Volcano, southern Cook Inlet, Alaska [abs.]: Eos, v. 73, n. 43, p. 613.

Beget, J. E., 1992, Dynamics and kinematics of recent pyroclastic flows in Alaska: Katmai 1912/Mt. St. Augustine 1986/Mt. Redoubt 1990 [abs.]: in International Geological Congress, 29, Abstracts, v. 2, Kyoto, Japan, Aug. 24-Sept. 3, 1992, p. 486.

Stihler, S. D., Stone, D. B., and Beget, J. E., 1992, "Varve" counting vs. tephrochronology, Cs-137,and Pb-210 dating: A comparative test at Skilak Lake, Alaska: Geology, v. 20, p. 1019-1022.

Beget, J. E., and Keskinen, M., 1992, Possible climatic impact of large Alaskan and Kamchatkan tephra eruptions [abs.]: in International Geological Congress, 29, Abstracts, Kyoto, Japan, Aug. 24-Sept. 3, 1992, p. 500.

Nye, C. J., Beget, J. E., Motyka, R. J., and Layer, P. W., 1992, Geology and geochemistry of Mt. Douglas volcano, eastern Aleutian arc, Alaska [abs.]: Eos, v. 73, p. 634.

Beget, J. E., and Mann, D., 1992, "Caldera" formation by unusually large phreatomagmatic eruptions through permafrost in arctic Alaska [abs.]: Eos, v. 73, n. 43, p. 636.

citation imageBeget, James, Mason, Owen, and Anderson, Patricia, 1992, Age, extent, and climatic significance of the c. 3400 BP Aniakchak tephra, western Alaska, USA: The Holocene, v. 2, n. 1, p. 51-56.

Swanson, S. E., Beget, J. E., and McGimsey, R. G., 1991, Compositional equivalence of tephra and lava groundmass glasses in the 1989-90 eruption of Mount Redoubt, Alaska: implication for eruption monitoring [abs.]: Abstracts with Programs - Geological Society of America, v. 23, n. 5, p. A396.

Waitt, R. B., and Beget, J. E., 1991, Tsunami hazard from debris avalanches off Augustine Volcano, Alaska [abs.]: Eos, v. 72, n. 44, p. 227-228.

Swanson, S. E., and Beget, J. E., 1991, Thermal properties of volcanic ash [abs.]: in Casadevall, T. J., (ed.), First international symposium on volcanic ash and aviation safety, U.S. Geological Survey Circular C 1065, p. 43-44.

Beget, J. E., Reger, R. D., Pinney, DeAnne, Gillispie, Tom, and Campbell, Kathy, 1991, Correlation of the Holocene Jarvis Creek, Tangle Lakes, Cantwell, and Hayes tephras in south-central and central Alaska: Quaternary Research, v. 35, n. 2, p. 174-189.

Beget, J. E., Edwards, Mary, Hopkins, David, Keskinen, Mary, and Kukla, G. J., 1991, Old Crow Tephra found at the Palisades of the Yukon, Alaska: Quaternary Research, v. 35, n. 2, p. 291-297.

Beget, J. E., Swanson, S. E., and Stone, D. B., 1991, Frequency and regional extent of ash eruptions from Alaskan volcanoes [abs.]: in Casadevall, T. J., (ed.), First international symposium on volcanic ash and aviation safety, U.S. Geological Survey Circular C 1065, p. 13.

Beget, J. E., and Keskinen, Mary, 1991, The Stampede Tephra: a middle Pleistocene marker bed in glacial and eolian deposits of central Alaska: Canadian Journal of Earth Sciences [Journal Canadien des Sciences de la Terre], v. 28, n. 7, p. 991-1002.

Pinney, D. S., and Beget, J. E., 1991, Late Pleistocene volcanic deposits near the Valley of Ten Thousand Smokes, Katmai National Park, Alaska: in Reger, R. D., (ed.), Short notes on Alaskan geology 1991, Alaska Division of Geological & Geophysical Surveys Professional Report PR 0111, p. 45-53.

Beget, J. E., and Nye, C. J., 1990, Extent of prehistoric debris avalanche and lahars from Mt. Redoubt, Alaska [abs.]: Eos, v. 71, n. 43, p. 1706.

Pinney, D. S., and Beget, J. E., 1990, Quaternary tephrochronology near the Valley of Ten Thousand Smokes, Katmai National Park, Alaska [abs.]: Eos, v. 71, n. 43, p. 1721.

Beget, J. E., Stone, D. B., and Hawkins, D. B., 1990, Paleoclimatic forcing of magentic susceptiblity variations in Alaskan loess during the late Quaternary: Geology, v. 18, p. 40-43.

Stone, D. B., Stihler, S. D., and Beget, J., 1990, Volcanic activity in the Cook Inlet region, Alaska, recorded by tephra in sediment cores from Skilak Lake [abs.]: Eos, v. 71, n. 17, p. 647.

Beget, J. E., 1989, Postglacial eruption history of Mt. St. Augustine, southern Cook Inlet, Alaska [abs.]: in Continental magmatism: abstracts, New Mexico Bureau of Mines and Mineral Resources Bulletin 0131, p. 19.

Pinney, D. S., and Beget, J. E., 1989, Late-Quaternary volcanic and glacial stratigraphy at Windy Creek, Katmai National Monument, Alaska [abs.]: Abstracts with Programs - Geological Society of America, v. 21, n. 5, p. 129.

Limke, A. J., and Beget, J. E., 1989, Rheological and kinematic characteristics of the 1986 pyroclastic flows at Mt. St. Augustine, Alaska [abs.]: in Continental magmatism: abstracts, New Mexico Bureau of Mines and Mineral Resources Bulletin 0131, p. 163.

Beget, J. E., and Limke, A. J., 1989, Density and void ratio on emplacement of a small pyroclastic flow, Mount St. Augustine, Alaska: Journal of Volcanology and Geothermal Research, v. 39, n. 4, p. 349-353.

Beget, J. E., and Limke, A. J., 1988, Two-dimensional kinematic and rheological modeling of the 1912 pyroclastic flow, Katmai, Alaska: Bulletin of Volcanology, v. 50, n. 3, p. 148-160.

Beget, J. E., 1988, Tephras and sedimentology of frozen Alaskan loess: in Senneset, Kaare, (ed.), International Conference on Permafrost, 5, Proceedings, v. 1, Trondheim, Norway, Aug. 2-5, 1988, p. 672-677.

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