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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.

Computer Systems/Database/GIS
Electronics
Geochemistry
Geochronology
Geodesy
Geology
Hydrology
Infrasound
Petrology
Remote Sensing
Seismology
Stratigraphy
Tephra
UAF Graduate Student
Ronni Grapenthin
Website: http://www.grapenthin.org
Discipline(s):Geodesy
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Quantifying large-scale surface change using SAR amplitude images: crater morphology changes during the 2019–2020 Shishaldin Volcano eruption, 2022
Angarita, Mario, Grapenthin, Ronni, Plank, Simon, Meyer, F.J., and Dietterich, Hannah, 2022, Quantifying large-scale surface change using SAR amplitude images: crater morphology changes during the 2019-2020 Shishaldin Volcano Eruption: Journal of Geophysical Research: Solid Earth, v. 127, 19 p., 10.1029/2022JB024344.
http://dx.doi.org/10.1029/2022JB024344


Multiple magma sources beneath the Okmok Caldera as inferred from local earthquake tomography, 2022
Kasatkina, E., Koulakov, I., Grapenthin, R., Izbekov, P., Larsen, J. F., Al Arifi, N., and Saleh Ismail Qaysi, 2022, Multiple magma sources beneath the Okmok caldera as inferred from local earthquake tomography: Journal of Geophysical Research: Solid Earth, v. 127. doi.org/10.1029/2022JB024656.
http://dx.doi.org/10.1029/2022JB024656
Download PDF Full Text PDF : 11.1 mb


Return from dormancy: Rapid inflation and seismic unrest driven by transcrustal magma transfer at Mt. Edgecumbe (L'ux Shaa) Volcano, Alaska., 2022
Grapenthin, Ronni, Cheng, Yitian, Angarita, Mario, Tan, Darren, Meyer, F.J., Fee, David, and Wech, Aaron, 2022, Return from dormancy: Reapid inflation and seismic unrest driven by transcrustal magma transfer at Mt. Edgecumbe (L'ux Shaa) Volcano, Alaska: Geophysical Research Letters, v. 49, 10p., 10.1029/2022GL099464.
http://dx.doi.org/10.1029/2022GL099464


Geodetic observations during the 2009 eruption of Redoubt Volcano, Alaska, 2013
citation imageGrapenthin, Ronni, Freymueller, J.T., and Kaufman, A.M., 2013, Geodetic observations during the 2009 eruption of Redoubt Volcano, Alaska: Journal of Volcanology and Geothermal Research, v. 259, p. 115-132, doi:10.1016/j.jvolgeores.2012.04.021
http://dx.doi.org/10.1016/j.jvolgeores.2012.04.021


Volcano deformation and subdaily GPS products, 2012
Grapenthin, R., 2012, Volcano deformation and subdaily GPS products: University of Alaska Fairbanks Ph.D. dissertation, 169 p.


Surface loading affects internal pressure source characteristics derived from volcano deformation signals, 2010
Grapenthin, Ronni, Sigmundsson, Freysteinn, Ofeigsson, Benedikt, and Sturkell, Erik, 2010, Surface loading affects internal pressure source characteristics derived from volcano deformation signals [abs.]: Geophysical Research Abstracts, v. 12, 1 p.

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