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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.

chris waythomas
Institute: USGS
Office: 907-786-7122
Discipline(s):Geology
Hydrology
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Project chief for USGS, Water Resources Division program on "Hydrologic Hazards and Processes at Alaska Volcanoes". Areas of expertise are geomorphology, hydrology, and Quaternary geology. Current investigations and research activities include hydrologic hazard assessments at Alaska Volcanoes, volcano-glacier interactions and the generation of floods and lahars, and Holocene geomorphic history of Alaska volcanoes. Presently working at Aniakchak Caldera, Adak Island, Mt. Spurr, and Mt. Redoubt.
[Show Publications]

Water, ice and mud: lahars and lahar hazards at ice- and snow-clad volcanoes, 2014
Waythomas, C.F., 2014, Water, ice and mud: lahars and lahar hazards at ice- and snow-clad volcanoes: Geology Today, v. 30, n. 1, p. 34-39.
Download PDF full-text pdf : 5.61 MB


Preface to the special issue of JVGR on the 2009 eruption of Redoubt Volcano, Alaska, 2013
Waythomas, C.F., and Webley, P.W., eds., 2013, Preface to the special issue of JVGR on the 2009 eruption of Redoubt Volcano, Alaska: Journal of Volcanology and Geothermal Research v. 259, p. 1, doi:10.1016/j.jvolgeores.2013.05.013
http://dx.doi.org/10.1016/j.jvolgeores.2013.05.013


Voluminous ice-rich and water-rich lahars generated during the 2009 eruption of Redoubt Volcano, Alaska, 2013
Waythomas, C.F., Pierson, T.C., Major, J.J., and Scott, W.E., 2013, Voluminous ice-rich and water-rich lahars generated during the 2009 eruption of Redoubt Volcano, Alaska: Journal of Volcanology and Geothermal Research, v. 259, p. 389-413, doi:10.1016/j.jvolgeores.2012.05.012
http://dx.doi.org/10.1016/j.jvolgeores.2012.05.012
Download PDF full-text pdf : 5.9 MB


Preliminary observations of voluminous ice-rich and water-rich lahars generated during the 2009 eruption of Redoubt Volcano, Alaska, 2012
Waythomas, C.F., Pierson, T.C., Major, J.J., and Scott, W.E., 2012, Preliminary observations of voluminous ice-rich and water-rich lahars generated during the 2009 eruption of Redoubt Volcano, Alaska: U.S. Geological Survey Open-File Report 2012-1078, 42 p., available online at http://pubs.usgs.gov/of/2012/1078/ .
Download publication on USGS website


The 2009 eruption of Redoubt Volcano, Alaska, 2012
Schaefer, J.R., ed., 2012, The 2009 eruption of Redoubt Volcano, Alaska, with contributions by Bull, Katharine, Cameron, Cheryl, Coombs, Michelle, Diefenbach, Angie, Lopez, Taryn, McNutt, Steve, Neal, Christina, Payne, Allison, Power, John, Schneider, Dave, Scott, William, Snedigar, Seth, Thompson, Glenn, Wallace, Kristi, Waythomas, Chris, Webley, Peter, and Werner, Cynthia: Alaska Division of Geological & Geophysical Surveys Report of Investigation 2011-5, 45 p., available at http://www.dggs.alaska.gov/pubs/id/23123.
Download link to PDF on ADGGS website


The 7-8 August 2008 eruption of Kasatochi Volcano, central Aleutian Islands, Alaska, 2010
citation imageWaythomas, C.F., Scott, W.E., Prejean, S.G., Schneider, D.J., Izbekov, Pavel, and Nye, C.J., 2010, The 7-8 August 2008 eruption of Kasatochi Volcano, central Aleutian Islands, Alaska: Journal of Geophysical Research, v. 115, n. B00B06, 23 p., doi:10.1029/2010JB007437 .
http://dx.doi.org/10.1029/2010JB007437


August 2008 eruption of Kasatochi Volcano, Aleutian Islands, Alaska - resetting an island landscape, 2010
citation imageScott, W.E., Nye, C.J., Waythomas, C.F., and Neal, C.A., 2010, August 2008 eruption of Kasatochi Volcano, Aleutian Islands, Alaska - resetting an island landscape: Arctic, Antarctic, and Alpine Research, v. 42, n.3, p. 250-259, doi:10.1657/1938-4246-42.3.250 .
http://dx.doi.org/10.1657/1938-4246-42.3.250
Download PDF full-text PDF : 2.99 MB


The geomorphology of an Aleutian volcano following a major eruption: the 7-8 August 2008 eruption of Kasatochi Volcano, Alaska, and its aftermath, 2010
citation imageWaythomas, C.F., Scott, W.E., and Nye, C.J., 2010, The geomorphology of an Aleutian volcano following a major eruption: the 7-8 August 2008 eruption of Kasatochi Volcano, Alaska, and its aftermath: Arctic, Antarctic, and Alpine Research, v. 42, n. 3, p. 260-275, doi:10.1657/1938-4246-42.3.260 .
http://dx.doi.org/10.1657/1938-4246-42.3.260
Download PDF full-text PDF : 2.55 MB


Preliminary slope-stability analysis of Augustine Volcano, 2010
Reid, M.E., Brien, D.L., and Waythomas, C.F., 2010, Preliminary slope-stability analysis of Augustine Volcano, chapter 14 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. 321-332 [http://pubs.usgs.gov/pp/1769/chapters/p1769_chapter14.pdf].
Download PDF chapter PDF on USGS website


Characterization of the volcanic substrate and soil following the 2008 eruption of Kasatochi Island Volcano, Alaska, 2009
Wang, Bronwen, Ping, Chien-Lu, Michealson, Gary, Waythomas, C.F., Talbot, Stephen, Plumlee, G.S., and Hageman, P.L., 2009, Characterization of the volcanic substrate and soil following the 2008 eruption of Kasatochi Island Volcano, Alaska [abs.]: Abstracts with Progams - Geological Society of America, v. 41, n. 7, p. 557.


Pacific Basin tsunami hazards associated with mass flows in the Aleutian arc of Alaska, 2009
citation imageWaythomas, C.F., Watts, Philip, Shi, Fengyan, and Kirby, J.T., 2009, Pacific Basin tsunami hazards associated with mass flows in the Aleutian arc of Alaska: Quaternary Science Reviews, v. 28, p. 1006-1019, doi:10.1016/j.quascirev.2009.02.019 .
http://dx.doi.org/10.1016/j.quascirev.2009.02.019


A multidisciplinary effort to assign realistic source parameters to models of volcanic ash-cloud transport and dispersion during eruptions, 2009
citation imageMastin, L.G., Guffanti, M., Servranckx, R., Webley, P., Barsotti, S., Dean, K., Durant, A., Ewert, J.W., Neri, A., Rose, W.I., Schneider, D., Siebert, L., Stunder, B., Swanson, G., Tupper, A., Volentik, A., and Waythomas, C.F., 2009, A multidisciplinary effort to assign realistic source parameters to models of volcanic ash-cloud transport and dispersion during eruptions: Journal of Volcanology and Geothermal Research, v. 186, n. 1-2, p. 10-21, doi:10.1016/j.jvolgeores.2009.01.008 .
http://dx.doi.org/10.1016/j.jvolgeores.2009.01.008


Diverse lavas from closely spaced volcanoes drawing from a common parent: Emmons Lake Volcanic Center, Eastern Aleutian Arc, 2009
citation imageMangan, Margaret, Miller, Thomas, Waythomas, Christopher, Trusdell, Frank, Calvert, Andrew, and Layer, Paul, 2009, Diverse lavas from closely spaced volcanoes drawing from a common parent: Emmons Lake Volcanic Center, Eastern Aleutian Arc: Earth and Planetary Science Letters, v. 287, p. 363-372, doi:10.1016/j.epsl.2009.08.018 .
http://dx.doi.org/10.1016/j.epsl.2009.08.018


The August 7, 2008 eruption of Kasatochi Volcano: a major explosive eruption and its aftermath at a small island volcano in the central Aleutian Islands of Alaska, 2009
Waythomas, C.F., Scott, W.E., Nye, C.J., Izbekov, Pavel, and Williams, Jeff, 2009, The August 7, 2008 eruption of Kasatochi Volcano: a major explosive eruption and its aftermath at a small island volcano in the central Aleutian Islands of Alaska [abs.]: Abstracts with Programs - Geological Society of America, v. 41, n. 7, p. 230.


Small volcano, big eruption, scientists rescued just in time, 2008
Waythomas, C.F., Prejean, S.G., and Schneider, D.J., 2008, Small volcano, big eruption, scientists rescued just in time: US Department of the Interior online publication People, Land, and Water preprint.


Alaska's Pavlof Volcano ends 11-year repose, 2008
Waythomas, C.F., Prejean, S.G., and McNutt, S.R., 2008, Alaska's Pavlof Volcano ends 11-year repose: Eos, v. 89, n. 23, p. 209, 211.


Geophysical survey of the intra-caldera icefield of Mt Veniaminof, Alaska, 2007
citation imageWelch, B.C., Dwyer, Kieran, Helgen, Michael, Waythomas, C.F., and Jacobel, R.W., 2007, Geophysical survey of the intra-caldera icefield of Mt Veniaminof, Alaska: Annals of Glaciology, v. 45, p. 58-65.


Late Quaternary distal tephra-fall deposits in lacustrine sediments, Kenai Peninsula, Alaska, 2007
citation imagede Fontaine, C.S., Kaufman, D.S., Anderson, R.S., Werner, Al, Waythomas, C.F., and Brown, T.A., 2007, Late Quaternary distal tephra-fall deposits in lacustrine sediments, Kenai Peninsula, Alaska: Quaternary Research, v. 68, p. 64-78, doi:10.1016/j.yqres.2007.03.006.
http://dx.doi.org/10.1016/j.yqres.2007.03.006


Mid-Holocene sector collapse at Mount Spurr Volcano, south-central Alaska, 2007
citation imageWaythomas, C.F., 2007, Mid-Holocene sector collapse at Mount Spurr volcano, south-central Alaska, in, Haeussler, P.J., and Galloway, J.P., eds., Studies by the U.S. Geological Survey in Alaska, 2006: U.S. Geological Survey Professional Paper 1739-C, 15 p., available at http://pubs.usgs.gov/pp/pp1739/c/ .
Download PDF full-text PDF on AVO server : 28.7 MB
Download USGS website with link to PDF


Satellite measurement of glaciers on volcanoes in Alaska: building an inventory of ice extent and hazards, 2007
Wessels, Rick, Neal, C.A., Waythomas, Christopher, Huggel, Christian, and Dean, Ken, 2007, Satellite measurement of glaciers on volcanoes in Alaska: building an inventory of ice extent and hazards [abs.]: Geological Society of America - Abstracts with Programs, v. 39, n. 4, p. 20.


Volcano-glacier interactions at Mount Veniaminof Volcano, a large ice-filled caldera on the Alaska Peninsula, 2007
Waythomas, Christopher, Miller, T.P., Welch, Brian, Calvert, Andrew, Bacon, C.R., and Wallace, K.L., 2007, Volcano-glacier interactions at Mount Veniaminof Volcano, a large ice-filled caldera on the Alaska Peninsula [abs.]: Geological Society of America - Abstracts with Programs, v. 39, n. 4, p. 20.


Monitoring and modeling ice-rock avalanches from ice-capped volcanoes: a case study of frequent large avalanches on Iliamna Volcano, Alaska, 2007
citation imageHuggel, Christian, Caplan-Auerbach, Jacqueline, Waythomas, C.F., and Wessels, Rick, 2007, Monitoring and modeling ice-rock avalanches from ice-capped volcanoes: a case study of frequent large avalanches on Iliamna Volcano, Alaska: Journal of Volcanology and Geothermal Research, v. 168, p. 114-136, doi:10.1016/j.jvolgeores.2007.08.009.
http://dx.doi.org/10.1016/j.jvolgeores.2007.08.009


Volcano-glacier interactions at Mount Veniaminof Volcano, a large ice-filled caldera on the Alaska Peninsula, 2007
Waythomas, Christopher, Miller, T.P., Welch, Brian, Calvert, A.T., Bacon, C.R., and Wallace, K.L., 2007, Volcano-glacier interactions at Mount Veniaminof, a large ice-filled caldera on the Alaska Peninsula [abs.]: Abstracts with Programs - Geological Society of America, v. 39, n. 4, p. 20.


Numerical simulation of tsunami generation by cold volcanic mass flows at Augustine Volcano, Alaska, 2006
Waythomas, C.F., and Watts, Philip, 2006, Numerical simulation of tsunami generation by cold volcanic mass flows at Augustine Volcano, Alaska [abs.]: Geological Society of America - Abstracts with Programs, v. 38, n. 5, p. 76.


Numerical simulation of tsunami generation by cold volcanic mass flows at Augustine Volcano, Alaska, 2006
citation imageWaythomas, C.F., Watts, P., and Walder, J.S., 2006, Numerical simulation of tsunami generation by cold volcanic mass flows at Augustine Volcano, Alaska: Natural Hazards and Earth System Sciences, v. 6, p. 671-685, available online at http://www.nat-hazards-earth-syst-sci.net/6/671/2006/ .
Download PDF full-text PDF : 8.5 MB
Download website link


Preliminary volcano-hazard assessment for the Emmons Lake Volcanic Center, Alaska, 2006
citation imageWaythomas, C.F., Miller, T.P., and Mangan, M.T., 2006, Preliminary Volcano Hazard Assessment for the Emmons Lake Volcanic Center, Alaska: Anchorage, Alaska, U.S. Geological Survey, Scientific Investigations Report 2006-5248, 33 p., 1 sheet, available online at http://www.avo.alaska.edu/pdfs/SIR2006-5248.pdf .
Download PDF map sheet : 2.4 MB
Download PDF full-text PDF : 4.08 MB


Assessment of tephra fall hazards at Aleutian Arc volcanoes using numerical models, geologic data, and historical observations, 2006
Waythomas, C.F., 2006, Assessment of tephra fall hazards at Aleutian Arc volcanoes using numerical models, geologic data, and historical observations [abs]: Eos, Joint Assembly Supplement, v. 87, abstract V33B-0661.


Headless debris flows from Mount Spurr volcano, Alaska, 2004
McGimsey, R., Neal, C., Waythomas, C., Wessels, R., Coombs, M., Wallace, K., 2004, Headless debris flows from Mount Spurr Volcano, Alaska [abs.]: Transactions, American Geophysical Union, v. 85, n. 47, Abstract V43B-1430.


Preliminary volcano-hazard assessment for Great Sitkin Volcano, Alaska, 2003
citation imageWaythomas, C. F., Miller, T. P., and Nye, C. J., 2003, Preliminary volcano-hazard assessment for Great Sitkin Volcano, Alaska: U.S. Geological Survey Open-File Report OF 03-0112, 25 p., 1 sheet.
Download PDF full-text PDF : 18.5 MB
Download PDF map sheet plate (PDF) : 2 MB


Geology and late Quaternary eruptive history of Kanaga Volcano, a calc-alkaline stratovolcano in the western Aleutian Islands, Alaska, 2003
citation imageWaythomas, C. F., Miller, T. P., and Nye, C. J., 2003, Geology and late Quaternary eruptive history of Kanaga Volcano, a calc-alkaline stratovolcano in the western Aleutian Islands, Alaska: in Galloway, J. P., (ed.), Studies by the U.S. Geological Survey in Alaska, 2001, U.S. Geological Survey Professional Paper PP 1678, p. 181-197.
Download PDF full-text PDF : 1.5 MB


Emmons Lake Volcanic Center, Alaska Peninsula: source of the late Wisconsin Dawson tephra, Yukon Territory, Canada, 2003
citation imageMangan, M. T., Waythomas, C. F., Miller, T. P., and Trusdell, F. A., 2003, Emmons Lake Volcanic Center, Alaska Peninsula: source of the late Wisconsin Dawson tephra, Yukon Territory, Canada: Canadian Journal of Earth Sciences, v. 40, n. 7, p. 925-936.


Numerical simulation of tsunami generation by pyroclastic flow at Aniakchak Volcano, Alaska, 2003
Waythomas, C. F., 2003, Numerical simulation of tsunami generation by pyroclastic flow at Aniakchak Volcano, Alaska: Geophysical Research Letters, v. 30, n. 14, p. 51-54.


Preliminary geologic map of Great Sitkin Volcano, Alaska, 2003
citation imageWaythomas, C. F., Miller, T. P., and Nye, C. J., 2003, Preliminary geologic map of Great Sitkin Volcano, Alaska: U.S. Geological Survey Open-File Report OF 03-0036, unpaged, 1 sheet, scale 1:63,360.
Download PDF PDF : 3 MB


Preliminary geologic map of Kanaga Volcano, Alaska, 2003
citation imageMiller, T. P., Waythomas, C. F., and Nye, C. J., 2003, Preliminary geologic map of Kanaga Volcano, Alaska: U.S. Geological Survey Open-File Report OF 03-0113, unpaged, 2 sheets, scale 1:20,000.
Download PDF sheet 1 (PDF) : 1.5 MB
Download PDF sheet 2 (PDF) : 10 MB


Preliminary volcano-hazard assessment for Hayes volcano, Alaska, 2002
citation imageWaythomas, C. F., and Miller, T. P., 2002, Preliminary volcano-hazard assessment for Hayes volcano, Alaska: U.S. Geological Survey Open-File Report OF 02-0072, 33 p.
Download PDF full-text PDF : 3.98 MB


Preliminary volcano-hazard assessment for Mount Spurr Volcano, Alaska, 2002
citation imageWaythomas, C. F., and Nye, C. J., 2002, Preliminary volcano-hazard assessment for Mount Spurr Volcano, Alaska: U.S. Geological Survey Open-File Report OF 01-0482, 46 p.
Download PDF full-text PDF : 11.25 MB


Preliminary volcano-hazard assessment for Kanaga Volcano, Alaska, 2002
citation imageWaythomas, C. F., Miller, T. P., and Nye, C. J., 2002, Preliminary volcano-hazard assessment for Kanaga Volcano, Alaska: U.S. Geological Survey Open-File Report OF 02-0397, 27 p., 1 sheet.
Download PDF full-text PDF : 38.5 MB
Download PDF map sheet plate (PDF) : 17.5 MB


Flank collapse at Mount Wrangell, Alaska, recorded by volcanic mass-flow deposits in the Copper River lowland, 2002
Waythomas, C. F., and Wallace, K. L., 2002, Flank collapse at Mount Wrangell, Alaska, recorded by volcanic mass-flow deposits in the Copper River lowland: Canadian Journal of Earth Sciences, v. 39, n. 8, p. 1257-1279.


Holocene volcanic ash in two lakes near Anchorage, Alaska, 2002
Hancock, J. R., Werner, A., Kaufman, D. S., Waythomas, C. F., de Fontaine, C. S., Kathan, K. M., Dennison, B. K., Wallace, K. L., and Kingsbury, E. M., 2002, Holocene volcanic ash in two lakes near Anchorage, Alaska: in Yesner, D. R., (ed.), Environmental change and human migrations in the North Pacific Basin, AMQUA 2002, 17, Program and Abstracts - American Quaternary Association, Anchorage, AK, Aug. 8-11, 2002, p. 52-53.


Late Quaternary volcanic ash in three lacustrine records, upper Cook Inlet, Alaska, 2002
de Fontaine, C. S., Kaufman, D. S., Anderson, R. S., Werner, A., Waythomas, C. F., Hancock, J. R., Dennison, B. K., and Wallace, K. L., 2002, Late Quaternary volcanic ash in three lacustrine records, upper Cook Inlet, Alaska [abs.]: in Yesner, D. R., (ed.), Environmental change and human migrations in the North Pacific Basin, AMQUA 2002, 17, Program and Abstracts - American Quaternary Association, Anchorage, AK, Aug. 8-11, 2002, p. 28.


Preliminary volcano-hazard assessment for Aniakchak Volcano, Alaska, 2001
citation imageNeal, Christina, McGimsey, R. G., Miller, T. P., Riehle, J. R., and Waythomas, C. F., 2001, Preliminary volcano-hazard assessment for Aniakchak Volcano, Alaska: U.S. Geological Survey Open-File Report OF 00-0519, 35 p.
Download website with links to PDFs
Download PDF full-text PDF : 24.2 MB
Download PDF map sheet plate PDF (for viewing) : 3.1 MB


Formation and failure of volcanic debris dams in the Chakachatna River valley associated with eruptions of the Spurr volcanic complex, Alaska, 2001
Waythomas, C. F., 2001, Formation and failure of volcanic debris dams in the Chakachatna River valley associated with eruptions of the Spurr volcanic complex, Alaska: Geomorphology, v. 39, n. 3-4, p. 111-129.


Reconstructing the ashfall history of the Anchorage, Alaska area, 2001
Hancock, J. R., Werner, A., Waythomas, C. F., and Kaufman, D. S., 2001, Reconstructing the ashfall history of the Anchorage, Alaska area: Abstracts with Programs - Geological Society of America, v. 33, n. 1, p. 66.


Dam-break floods caused by failure of volcanic debris dams in the Chakachatna River valley associated with eruptions of the Spurr volcanic complex, Alaska, 2000
Waythomas, C. F., 2000, Dam-break floods caused by failure of volcanic debris dams in the Chakachatna River valley associated with eruptions of the Spurr volcanic complex, Alaska [abs.]: Geological Society of America - Abstracts with Programs, v. 32, n. 7, p. 510.


Further investigation of geologic setting and characterization of a large volcanic debris avalanche deposit in the Copper River basin, Alaska, 2000
Wallace, K. L., and Waythomas, C. F., 2000, Further investigation of geologic setting and characterization of a large volcanic debris avalanche deposit in the Copper River basin, Alaska [abs.]: Eos, v. 81, n. 48, p. 1353.


Physical volcanology of large late-Quaternary caldera-forming eruptions at the Emmons Lake volcanic center, Alaska Peninsula, 2000
Miller, T. P., Waythomas, C. F., Mangan, M. T., and Trusdell, F. A., 2000, Physical volcanology of large late-Quaternary caldera-forming eruptions at the Emmons Lake volcanic center, Alaska Peninsula [abs.]: Eos, v. 81, n. 48, p. 1353.


Events and geochemistry of the initial caldera-forming eruption at Emmons Lake volcanic complex, 2000
Mangan, M. T., Trusdell, F. A., Miller, T. P., and Waythomas, C. F., 2000, Events and geochemistry of the initial caldera-forming eruption at Emmons Lake volcanic complex [abs.]: Eos, v. 81, n. 48, p. 1353.


Fire and ice on the Alaska Peninsula stratigraphic records of pyroclastic eruptions and glaciation, Emmons Lake Caldera and vicinity, Southwestern Alaska, 2000
Waythomas, C. F., Miller, T. P., Mangan, M. T., Trusdell, F. A., and Wallace, K. L., 2000, Fire and ice on the Alaska Peninsula stratigraphic records of pyroclastic eruptions and glaciation, Emmons Lake Caldera and vicinity, Southwestern Alaska [abs.]: Eos, v. 81, n. 48, p. 1352-1353.


Record of Late Holocene debris avalanches and lahars at Iliamna Volcano, Alaska, 2000
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.


Reevaluation of tsunami formation by debris avalanche at Augustine Volcano, Alaska, 2000
citation imageWaythomas, C. F., 2000, Reevaluation of tsunami formation by debris avalanche at Augustine Volcano, Alaska: in Keating, B. H., Waythomas, C. F., and Dawson, A. G., (eds.), Landslides and tsunamis, Pure and Applied Geophysics, v. 157, n. 6, p. 1145-1188.


Landslides and tsunamis, 2000
Keating, B. H., Waythomas, C. F., and Dawson, A. G., (eds.), 2000, Landslides and tsunamis: in Landslides and tsunamis, Pure and Applied Geophysics, v. 157, n. 6-8, p. 871-1313.


Stratigraphic framework of Holocene volcaniclastic deposits, Akutan Volcano, east-central Aleutian Islands, Alaska, 1999
citation imageWaythomas, C. F., 1999, Stratigraphic framework of Holocene volcaniclastic deposits, Akutan Volcano, east-central Aleutian Islands, Alaska: Bulletin of Volcanology, v. 61, n. 3, p. 141-161.


Preliminary volcano-hazard assessment for Iliamna Volcano, Alaska, 1999
citation imageWaythomas, C. F., and Miller, T. P., 1999, Preliminary volcano-hazard assessment for Iliamna Volcano, Alaska: U.S. Geological Survey Open-File Report OF 99-0373, 31 p., 1 sheet, scale unknown.
Download PDF full-text PDF : 2.84 MB
Download PDF map sheet plate : 1.0 MB


Geologic setting and characterization of a large volcanic debris avalanche deposit in the Copper River basin, Alaska, 1999
Wallace, K. L., and Waythomas, C. F., 1999, Geologic setting and characterization of a large volcanic debris avalanche deposit in the Copper River basin, Alaska [abs.]: Eos, v. 80, n. 46, p. 1150-1151.


Preliminary volcano-hazard assessment for Augustine Volcano, Alaska, 1998
citation imageWaythomas, C. F., and Waitt, R. B., 1998, Preliminary volcano-hazard assessment for Augustine Volcano, Alaska: U.S. Geological Survey Open-File Report OF 98-0106, 39 p., 1 plate, scale unknown.
Download PDF full-text PDF : 2.08 MB
Download PDF map sheet plate : 3.14 MB


Preliminary volcano-hazard assessment for Akutan Volcano east-central Aleutian Islands, Alaska, 1998
citation imageWaythomas, C. F., Power, J. A., Richter, D. H., and McGimsey, R. G., 1998, Preliminary volcano-hazard assessment for Akutan Volcano east-central Aleutian Islands, Alaska: U.S. Geological Survey Open-File Report OF 98-0360, 36 p., 1 plate, scale unknown.
Download PDF full-text PDF : 1.68 MB
Download PDF map sheet plate (PDF) : 2.62 MB


Geologic map of Akutan Island, Alaska, 1998
citation imageRichter, D. H., Waythomas, C. F., McGimsey, R. G., and Stelling, P. L., 1998, Geologic map of Akutan Island, Alaska: U.S. Geological Survey Open-File Report OF 98-0135, 22 p., 1 sheet, scale 1:48,000.
Download PDF full-text PDF, incl. map sheet : 1.2 MB


Tsunami generation by pyroclastic flow during the 3500-year B.P. caldera-forming eruption of Aniakchak Volcano, Alaska, 1998
citation imageWaythomas, C. F., and Neal, C. A., 1998, Tsunami generation by pyroclastic flow during the 3500-year B.P. caldera-forming eruption of Aniakchak Volcano, Alaska: Bulletin of Volcanology, v. 60, n. 2, p. 110-124.


Preliminary volcano-hazard assessment for Redoubt Volcano, Alaska, 1997
citation imageWaythomas, C. F., Dorava, J. M., Miller, T. P., Neal, C. A., and McGimsey, R. G., 1997, Preliminary volcano-hazard assessment for Redoubt Volcano, Alaska: U.S. Geological Survey Open-File Report OF 97-857, 40 p., 1 plate, scale unknown.
Download PDF full-text PDF : 1.76 MB
Download PDF map sheet plate PDF : 5.61 MB


Preliminary volcano-hazard assessment for Pavlof Volcano, Alaska, 1997
Waythomas, C. F., Miller, T. P., McGimsey, R. G., and Neal, C. A., 1997, Preliminary volcano-hazard assessment for Pavlof Volcano, Alaska: U.S. Geological Survey Open-File Report OF 97-0135, unpaged, 1 plate, scale 1:375,000.


Tsunami generation during the 3500 yr B.P. caldera-forming eruption of Aniakchak Volcano, 1997
Waythomas, C. F., and Neal, C. A., 1997, Tsunami generation during the 3500 yr B.P. caldera-forming eruption of Aniakchak Volcano [abs.]: Eos, v. 78, n. 46, p. 816.


Debris-avalanche-initiated tsunamis at Augustine Volcano, Alaska, reexamined, 1997
Waythomas, C. F., 1997, Debris-avalanche-initiated tsunamis at Augustine Volcano, Alaska, reexamined [abs.]: Abstracts with Programs - Geological Society of America, v. 29, n. 5, p. 73.


A catastrophic flood caused by drainage of a caldera lake at Aniakchak Volcano, Alaska, and implications for volcanic hazards assessment, 1996
Waythomas, C. F., Walder, J. S., McGimsey, R. G., and Neal, C. A., 1996, A catastrophic flood caused by drainage of a caldera lake at Aniakchak Volcano, Alaska, and implications for volcanic hazards assessment: Geological Society of America Bulletin, v. 108, n. 7, p. 861-871.


Volcanigenic tsunamis from Augustine Volcano, Alaska: fact or fiction?, 1996
Waythomas, C. F., 1996, Volcanigenic tsunamis from Augustine Volcano, Alaska: fact or fiction? [abs.]: Abstracts with Programs - Geological Society of America, v. 28, n. 7, p. 410.


Hydrologic hazards at recently active volcanoes in the Cook Inlet Region, Alaska, 1995
citation imageDorava, J. M., and Waythomas, C. F., 1995, Hydrologic hazards at recently active volcanoes in the Cook Inlet Region, Alaska: in Herrman, R., (ed.), Annual summer symposium -- 1995, Water resources and environmental hazards: emphasis on hydrologic and cultural insight in the Pacific Rim, Honolulu, HI, American Water Resources Association, p. 91-98.


The last 3400 years at Aniakchak caldera, Alaska, 1995
Neal, C. A., McGimsey, R. G., Waythomas, C. F., Miller, T. P., and Nye, C. J., 1995, The last 3400 years at Aniakchak caldera, Alaska [abs.]: Abstracts with Programs - Geological Society of America, v. 27, n. 5, p. 67.


Potential hazards from future eruptions of Mt. Churchill, Alaska, 1995
McGimsey, R. G., Richter, D. H., Waythomas, C. F., and Donaldson, J. A., 1995, Potential hazards from future eruptions of Mt. Churchill, Alaska [abs.]: Abstracts with Programs - Geological Society of America, v. 27, n. 5, p. 63.


Volcanigenic tsunami from Alaskan volcanoes: geologic evidence from Bristol Bay and Cook Inlet, Alaska, 1995
Waythomas, C. F., Neal, C. A., McGimsey, R. G., Dorava, J. M., Lemke, K. J., and Vanderpool, A. M., 1995, Volcanigenic tsunami from Alaskan volcanoes: geologic evidence from Bristol Bay and Cook Inlet, Alaska [abs.]: Eos, v. 76, n. 46, p. 291.


Surficial geologic map of northern Adak Island, Alaska, 1995
Waythomas, C. F., 1995, Surficial geologic map of northern Adak Island, Alaska: U.S. Geological Survey Open-File Report OF 95-0128, 6 p., 1 plate, scale 1:25,000.
Download full-text PDFs on DGGS server


High stand and catastrophic draining of intracaldera Surprise Lake, Aniakchak volcano, Alaska, 1994
citation imageMcGimsey, R. G., Waythomas, C. F., and Neal, C. A., 1994, High stand and catastrophic draining of intracaldera Surprise Lake, Aniakchak volcano, Alaska: in Till, A. B. and Moore, T. E., (eds.), Geologic studies in Alaska by the U.S. Geological Survey, 1993, U.S. Geological Survey Bulletin B 2107, p. 59-71.
Download PDF full-text PDF : 15 MB


New evidence for Holocene volcanic activity on northern Adak Island, Alaska, 1994
citation imageWaythomas, C. F., 1994, New evidence for Holocene volcanic activity on northern Adak Island, Alaska [abs.]: Abstracts with Programs - Geological Society of America, v. 26, n. 7, p. A137-A138.


Hydrologic processes at Alaska volcanoes, 1994
Waythomas, C. F., 1994, Hydrologic processes at Alaska volcanoes [abs.]: Abstracts with Programs - Geological Society of America, v. 26, n. 7, p. 377.


Post-glacial evolution of northern Adak Island, Alaska, 1994
Waythomas, C. F., Miller, T. P., and Kiriyanov, V. Y., 1994, Post-glacial evolution of northern Adak Island, Alaska [abs.]: in American Quaternary Association, 13, Program and Abstracts, Minneapolis, MN, June 19-22, 1994, p. 179.


High stand and catastrophic draining of intracaldera Surprise Lake, Aniakchak Crater, Alaska, 1994
McGimsey, R. G., Waythomas, C. F., and Neal, C. A., 1994, High stand and catastrophic draining of intracaldera Surprise Lake, Aniakchak Crater, Alaska [abs.]: Abstracts with Programs - Geological society of America, v. 26, n. 7, p. A138.


Hydrologic hazards at Alaska volcanoes: Chakachatna River basin near Crater Peak, Spurr Volcano, 1994
Dorava, J. M., and Waythomas, C. F., 1994, Hydrologic hazards at Alaska volcanoes: Chakachatna River basin near Crater Peak, Spurr Volcano: U.S. Geological Survey Fact Sheet FS 94-0058, 2 p.


Stratigraphic context of Old Crow tephra, Holitna lowland, interior southwest Alaska, 1993
Waythomas, C. F., Lea, P. D., and Walter, R. C., 1993, Stratigraphic context of Old Crow tephra, Holitna lowland, interior southwest Alaska: Quaternary Research, v. 40, n. 1, p. 20-29.


Geomorphic evidence of post-glacial uplift, northern Adak Island, Alaska, 1993
Waythomas, C. F., 1993, Geomorphic evidence of post-glacial uplift, northern Adak Island, Alaska: Eos, v. 74, n. 43, p. 233.


Quaternary geology and late-Quaternary environments of the Holitna Lowland and Chuilnuk-Kiokluk Mountains region, interior southwestern Alaska, 1990
Waythomas, C. F., 1990, Quaternary geology and late-Quaternary environments of the Holitna Lowland and Chuilnuk-Kiokluk Mountains region, interior southwestern Alaska: University of Colorado Ph.D. dissertation, 305 p.


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