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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.

Michelle Coombs
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Institute: USGS
Website: http://alaska.usgs.gov/staff/s
taffbio.php?employeeid=41
Address: Anchorage, AK 99508
Discipline(s):Geochemistry
Geochronology
Geology
Petrology
Stratigraphy
Tephra
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Michelle has been a Research Geologist for USGS-AVO in Anchorage since 2004. Her work includes research on a wide variety of topics in geology, petrology, and geochemistry, as well as geologic mapping and hazards assessment. Prior to 2004, Michelle worked for the USGS in Menlo Park, CA, where her research focused on the geochemistry, petrology, and submarine geology of Hawaiian volcanoes. She is currently working on several volcanoes along the Aleutian-Alaskan arc, including Augustine, Spurr, Redoubt, Hayes, and Akutan.
[Show Publications]

Character, mass, distribution, and origin of tephra-fall deposits from the 2009 eruption of Redoubt Volcano, Alaska - Highlighting the significance of particle aggregation, 2013
Wallace, K.L., Schaefer, J.R., and Coombs, M.L., 2013, Character, mass, distribution, and origin of tephra-fall deposits from the 2009 eruption of Redoubt Volcano, Alaska - Highlighting the significance of particle aggregation: Journal of Volcanology and Geothermal Research, doi: 10.1016/j.jvolgeores.2012.09.015
http://dx.doi.org/10.1016/j.jvolgeores.2012.09.015


Andesites of the 2009 eruption of Redoubt Volcano, Alaska, 2013
Coombs, M.L., Sisson, T.W., Bleick, H.A., Henton, S.M., Nye, C.J., Payne, A.L., Cameron, C.E., Larsen, J.F., Wallace, K.L., and Bull, K.F., 2013, Andesites of the 2009 eruption of Redoubt Volcano, Alaska: Journal of Volcanology and Geothermal Research, v. 259, p. 349-372, doi:10.1016/j.jvolgeores.2012.01.002
http://dx.doi.org/10.1016/j.jvolgeores.2012.01.002


Character, mass, distribution, and origin of tephra-fall deposits from the 2009 eruption of Redoubt Volcano, Alaska - Highlighting the significance of particle aggregation, 2013
Wallace, K.L., Schaefer, J.R., and Coombs, M.L., 2013, Character, mass, distribution, and origin of tephra-fall deposits from the 2009 eruption of Redoubt Volcano, Alaska - Highlighting the significance of particle aggregation: Journal of Volcanology and Geothermal Research, v. 259, p. 145-169, doi:10.1016/j.jvolgeores.2012.09.015
http://dx.doi.org/10.1016/j.jvolgeores.2012.09.015
Download PDF full-text pdf : 6.3 MB


High-resolution satellite and airborne thermal infrared imaging of precursory unrest and 2009 eruption at Redoubt Volcano, Alaska, 2013
Wessels, R.L., Vaughan, R.G., Patrick, M.R., and Coombs, M.L., 2013, High-resolution satellite and airborne thermal infrared imaging of precursory unrest and 2009 eruption at Redoubt Volcano, Alaska: Journal of Volcanology and Geothermal Research, v. 259, p. 248-269, doi:10.1016/j.jvolgeores.2012.04.014
http://dx.doi.org/10.1016/j.jvolgeores.2012.04.014
Download PDF full-text pdf : 6.55 MB


Volcano-ice interactions precursory to the 2009 eruption of Redoubt Volcano, Alaska, 2013
Bleick, H.A., Coombs, M.L., Cervelli, P.F., Bull, K.F., and Wessels, R.L., 2013, Volcano-ice interactions precursory to the 2009 eruption of Redoubt Volcano, Alaska: Journal of Volcanology and Geothermal Research, v. 259, p. 373-388, doi:10.1016/j.jvolgeores.2012.10.008
http://dx.doi.org/10.1016/j.jvolgeores.2012.10.008
Download PDF full-text pdf : 4.6 MB


Pre-eruptive magmatic conditions at Augustine Volcano, Alaska, 2006: evidence from amphibole geochemistry and textures, 2013
De Angelis, S.H., Larsen, Jessica, and Coombs, Michelle, 2013, Pre-eruptive magmatic conditions at Augustine Volcano, Alaska, 2006: evidence from amphibole geochemistry and textures: Journal of Petrology, v. 54, n. 9, p. 1939-1961, doi:10.1093/petrology/egt037
http://dx.doi.org/10.1093/petrology/egt037


Geology and 40Ar/39Ar geochronology of the medium- to high-K Tanaga volcanic cluster, western Aleutians, 2012
citation imageJicha, B.R., Coombs, M.L., Calvert, A.T., and Singer, B.S., 2012, Geology and 40Ar/39Ar geochronology of the medium- to high-K Tanaga volcanic cluster, western Aleutians: Geological Society of America Bulletin, v. 124, n. 5/6, p. 842-856, doi:10.1130/B30472.1 .
http://dx.doi.org/10.1130/B30472.1


Geologic map of Mount Gareloi, Gareloi Island, Alaska, 2012
Coombs, M.L., McGimsey, R.G., and Browne, B.L., 2012, Geologic map of Mount Gareloi, Gareloi Island, Alaska: U.S. Geological Survey Scientific Investigations Map 3145, 18 p., 1 sheet, scale 1:24,000, available at http://pubs.usgs.gov/sim/3145/ .
Download PDFs on a USGS website


Katmai scientific studies, 2012
Winfree, Robert, with contributions from Bacon, C.R., Bennett, A.J., Bennington, Ninfa, Berg, E.E., Brooks, Margi, Coletti, H.A., Coombs, M.L., Fierstein, Judy, Freeburg, Gary, Frost, G.V., Haney, Matthew, Jorgenson, M.T., Miller, A.E., Moran, Seth, Murphy, Rachel, Partnow, Patricia, Paskievitch, John, Stevens, D.P., Powell, Lee, Power, John, Prejean, S.G., Schaaf, Jeanne, Sherriff, R.L., Thurber, Clifford, and Welchman, R.A., 2012, Katmai science studies: Alaska Park Science Journal, v. 11, n. 1, 96 p., available online at http://www.nps.gov/akso/nature/science/ak_park_science/volume_11_issue_1.cfm .
Download link to NPS website with full PDFs


Using rocks to reveal the inner workings of magma chambers below volcanoes in Alaska's National Parks, 2012
Coombs, M.L., and Bacon, C.R., 2012, Using rocks to reveal the inner workings of magma chambers below volcanoes in Alaska's National Parks: in Alaska: in Winfree, Robert (project lead), Katmai Science Studies: Alaska Park Science Journal, v. 11, n. 1, p. 26-33, available online at http://www.nps.gov/akso/nature/science/ak_park_science/volume_11_issue_1.cfm .
Download link to PDF on NPS 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


Volcano from space, 2011
Coombs, Michelle, 2011, Volcano from space, in Cook Inlet volcanoes: Frontier Scientists, WonderVisions, video, available at http://frontierscientists.com/category/cook_inlet_volcanoes/
Download publishers website


The 2006 eruption of Augustine Volcano, Alaska, 2010
Power, J.A., Coombs, M.L., and Freymueller, J.T., eds., 2010, The 2006 eruption of Augustine Volcano, Alaska: U.S. Geological Survey Professional Paper 1769, 667 p., 1 plate, scale 1:20,000, and data files. Available online at http://pubs.usgs.gov/pp/1769/ .
Download link to publication on USGS website


Timing, distribution, and volume of proximal products of the 2006 eruption of Augustine Volcano, 2010
Coombs, M.L., Bull, K.F., Vallance, J.W., Schneider, D.J., Thoms, E.E., Wessels, R.L., and McGimsey, R.G., 2010, Timing, distribution, and volume of proximal products of the 2006 Eruption of Augustine Volcano, chapter 8 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. 145-185, 1 plate, scale 1:20,000, and GIS data [http://pubs.usgs.gov/pp/1769/chapters/p1769_chapter08].
Download PDF and GIS files for chapter on USGS website


Pyroclastic flows, lahars, and mixed avalanches generated during the 2006 eruption of Augustine Volcano, 2010
Vallance, J.W., Bull, K.F., and Coombs, M.L., 2010, Pyroclastic flows, lahars, and mixed avalanches generated during the 2006 eruption of Augustine Volcano, chapter 10 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. 219-267 [http://pubs.usgs.gov/pp/1769/chapters/p1769_chapter10.pdf].
Download PDF USGS website of chapter PDF


Petrology and geochemistry of the 2006 eruption of Augustine Volcano, 2010
Larsen, J.F., Nye, C.J., Coombs, M.L., Tilman, Mariah, Izbekov, Pavel, and Cameron, Cheryl, 2010, Petrology and geochemistry of the 2006 eruption of Augustine Volcano, chapter 15 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. 335-382 and spreadsheets [http://pubs.usgs.gov/pp/1769/chapters/p1769_chapter15].
Download chapter PDF and spreadsheets on USGS website


Augustine Volcano; the influence of volatile components in magmas erupted A.D. 2006 to 2,100 years before present, 2010
Webster, J.D., Mandeville, C.W., Goldoff, Beth, Coombs, M.L., and Tappen, Christine, 2010, Augustine Volcano; the influence of volatile components in magmas erupted A.D. 2006 to 2,100 years before present, chapter 16 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. 383-423 [http://pubs.usgs.gov/pp/1769/chapters/p1769_chapter16.pdf].
Download PDF chapter PDF on USGS website


High-resolution satellite and airborne thermal infrared imaging of the 2006 eruption of Augustine Volcano, 2010
Wessels, R.L., Coombs, M.L., Schneider, D.J., Dehn, Jonathan, and Ramsey, M.S., 2010, High-resolution satellite and airborne thermal infrared imaging of the 2006 eruption of Augustine Volcano, chapter 22 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. 527-552 [http://pubs.usgs.gov/pp/1769/chapters/p1769_chapter22.pdf].
Download PDF chapter PDF on USGS website


Basanite-nepheline suite from early Kilauea: carbonated melts of phlogopite-garnet peridotite at Hawaii's leading magmatic edge, 2009
citation imageSisson, T.W., Kimura, J.-I., and Coombs, M.L., 2009, Basanite-nepheline suite from early Kilauea: carbonated melts of phlogopite-garnet peridotite at Hawaii's leading magmatic edge: Contributions to Mineralogy and Petrology, v. 158, p. 803-829, doi:10.1007/s00410-009-0411-8 .
http://dx.doi.org/doi:10.1007/s00410-009-0411-8


Preliminary volcano-hazard assessment for Gareloi Volcano, Gareloi Island, Alaska, 2008
citation imageCoombs, M.L., McGimsey, R.G., and Browne, B.L., 2008, Preliminary volcano-hazard assessment for Gareloi Volcano, Gareloi Island, Alaska: U.S. Geological Survey Scientific Investigations Report 2008-5159, 29 p., 1 sheet, available at http://pubs.usgs.gov/sir/2008/5159/ .
Download link to USGS website containing PDFs of report and map


Augustine Volcano: Mg, Cr, and Ni-rich: LILE, REE, and HFSE-poor, 2008
Nye, C.J., Coombs, M.L., Larsen, J., Izbekov, P., Tilman, M., and Cameron, C., 2008, Augustine Volcano: Mg, Cr, and Ni-rich: LILE, REE, and HFSE-poor [abs.]: in Abstracts of the 18th Annual V.M. Goldschmidt Conference, Geochimica et Cosmochimica Acta, v. 72, n. 12S, p. A692.


Massive edifice failure at Aleutian arc volcanoes, 2007
citation imageCoombs, M.L., White, S.M., and Scholl, D.W., 2007, Massive edifice failure at Aleutian arc volcanoes: Earth and Planetary Science Letters, v. 256, p. 403-418, doi: 10.1016/j.epsl.2007.01.030.
http://dx.doi.org/10.1016/j.epsl.2007.01.030


Preliminary volcano-hazard assessment for the Tanaga Volcanic Cluster, Tanaga Island, Alaska, 2007
citation imageCoombs, M.L., McGimsey, R.G., and Browne, B.L., 2007, Preliminary volcano-hazard assessment for the Tanaga Volcanic Cluster, Tanaga Island, Alaska: U.S. Geological Survey Scientific Investigations Report 2007-5094, 36 p., available online at: http://pubs.usgs.gov/sir/2007/5094/ .
Download USGS website with links to PDF of report and map sheet


Volcanic disruption of summit ice at Mount Spurr Volcano, Alaska, 2004-2007, 2007
Neal, C.A., Coombs, Michelle, Wessels, Rick, and McGimsey, R.G., 2007, Volcanic disruption of summit ice at Mount Spurr Volcano, Alaska, 2004-2007 [abs.]: Geological Society of America - Abstracts with Programs, v. 39, n. 4, p. 20.


The reawakening of Alaska's Augustine Volcano, 2006
citation imagePower, J.A., Nye, C.J., Coombs, M.L., Wessels, R.L., Cervelli, P.F., Dehn, J., Wallace, K.L., Freymueller, J.T., and Doukas, M.P., 2006, The reawakening of Alaska's Augustine Volcano: Eos, v. 87, n. 37, p. 373, 377.


Geothermal disruption of summit glaciers at Mount Spurr Volcano, 2004-6: an unusual manifestation of volcanic unrest, 2006
citation imageCoombs, M.L., Neal, C.A., Wessels, R.L., and McGimsey, R.G., 2006, Geothermal disruption of summit glaciers at Mount Spurr Volcano, 2004-6: an unusual manifestation of volcanic unrest: U.S. Geological Survey Professional Paper 1732-B, 33 p., available at http://pubs.usgs.gov/pp/pp1732/pp1732b/index.html .
Download website with link to full-text PDF


Reaction rim growth on olivine in silicic melts: implications for magma mixing, 2004
Coombs, M. L., and Gardner, J. E., 2004, Reaction rim growth on olivine in silicic melts: implications for magma mixing: American Mineralogist, v. 89, n. 5-6, p. 748-759.


Preliminary geology of the Tanaga Island volcanic cluster, western Aleutians (Alaska), 2004
Coombs, M. L., Browne, B. L., and Larsen, J. F., 2004, Preliminary geology of the Tanaga Island volcanic cluster, western Aleutians (Alaska) [abs.]: Eos, AGU Fall Meeting Supplement, v. 85, n. 47, p. V43E-1457.


Preliminary geology of Gareloi Volcano, western Aleutian Islands (Alaska), 2004
Browne, B. L., Coombs, M. L., and Larsen, J. F., 2004, Preliminary geology of Gareloi Volcano, western Aleutian Islands (Alaska) [abs.]: Eos, AGU Fall Meeting Supplement, v. 85, n. 47, p. V43E-1454.


Ultra-high chlorine in submarine Kilauea glasses: Evidence for assimilation of brine by magma, 2004
Coombs, M., Sisson, T., and Kimura, J.-I., 2004, Ultra-high chlorine in submarine Kilauea glasses: Evidence for assimilation of brine by magma: Earth and Planetary Science Letters, v. 217, p. 297-313.


The growth and collapse of Waianae volcano, Hawaii, as revealed by exploration of its submarine flanks, 2004
Coombs, M., Clague, D., Moore, G., and Cousens, B., 2004, The growth and collapse of Waianae volcano, Hawaii, as revealed by exploration of its submarine flanks: Geochemistry, Geophysics, Geosystems, v. 5, doi: 10.1029/2004GC000717.
http://dx.doi.org/10.1029/2004GC000717


Major-element, sulfur, and chlorine compositions of glasses from the submarine flank of Kilauea Volcano, Hawaii, collected during 1998-2002 Japan Marine Science and Technology Center cruises, 2004
citation imageCoombs, M., Sisson, T., and Lipman, P., 2004, Major-element, sulfur, and chlorine compositions of glasses from the submarine flank of Kilauea Volcano, Hawaii, collected during 1998-2002 Japan Marine Science and Technology Center cruises: U.S. Geological Survey Open-File Report 2004-1378, 7 p.
Download website with links to PDF and Excel


Growth history of Kilauea inferred from dissolved volatiles in alkalic through tholeiitic glasses, 2004
Coombs, M., Sisson, T., and Lipman, P., 2004, Growth history of Kilauea inferred from dissolved volatiles in alkalic through tholeiitic glasses [abs.]: Western Pacific Geophysics Meeting Abstract V41A-42.


The 1929 eruption of Mount Gareloi, Alaska: A compositionally zoned, explosive fissure eruption of a predominantly mafic stratocone, 2004
Coombs M., and Browne, B., 2004, The 1929 eruption of Mount Gareloi, Alaska: A compositionally zoned, explosive fissure eruption of a predominantly mafic stratocone [abs.]: in Abstracts, IAVCEI General Assembly, Pucon, Chile, 2004, Abstract 3a-24.


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.


Experimental and textural constraints on mafic enclave formation in volcanic rocks, 2003
Coombs, M. L., Eichelberger, J. C., and Rutherford, M. J., 2003, Experimental and textural constraints on mafic enclave formation in volcanic rocks: Journal of Volcanology and Geothermal Research, v. 119, n. 1-4, p. 125-144.


Development of the Waianae slump and Kaena Ridge, Hawaii, 2003
Coombs, M., Clague, D., and Moore, G., 2003, Development of the Waianae slump and Kaena Ridge, Hawaii [abs.]: Transactions, American Geophysical Union, v. 84, n. 46, Abstract V11G-03.


Shallow eruption depths for ancestral Kilauea: implications for its growth, 2002
Coombs, M.L., Sisson, T.W., and Lipman, P.W., 2002, Shallow eruption depths for ancestral Kilauea: implications for its growth [abs.]: Transactions, American Geophysical Union, v. 83, n. 47, p. F1443.


In-place alkalic lavas recovered from Hilina Bench off-shore Kilauea, Hawaii: significance in reconstructing ancient Kilauea history, 2002
Kimura, J.-I., Sisson, T.W., Coombs, M.L., Lipman, P.W., 2002, In-place alkalic lavas recovered from Hilina Bench off-shore Kilauea, Hawaii: significance in reconstructing ancient Kilauea history [abs.]: Transactions, American Geophysical Union, v. 83, n. 47, p. F1433.


Piggyback tectonics: Long-term growth of Kilauea on the south flank of Mauna Loa, 2002
Lipman, P.W., Sisson, T.W., Coombs, M.L.,, and Lanphere, M., 2002, Piggyback tectonics: Long-term growth of Kilauea on the south flank of Mauna Loa [abs.]: Transactions, American Geophysical Union, v. 83, n. 47, p. F1443.


Shallow-storage conditions for the rhyolite of the 1912 eruption at Novarupta, Alaska, 2001
citation imageCoombs, M. L., and Gardner, J. E., 2001, Shallow-storage conditions for the rhyolite of the 1912 eruption at Novarupta, Alaska: Geology, v. 29, n. 9, p. 775-778.
Download HTML abstract


Experimental and petrologic constraints on magma movement, storage, and interactions at two volcanoes in Katmai National Park, Alaska, 2001
citation imageCoombs, M. L., 2001, Experimental and petrologic constraints on magma movement, storage, and interactions at two volcanoes in Katmai National Park, Alaska: University of Alaska Fairbanks unpublished Ph.D. dissertation, Fairbanks, Alaska, 214 p.


Magma storage and mixing conditions for the 1953-1974 eruptions of Southwest Trident volcano, Katmai National Park, Alaska, 2000
citation imageCoombs, M. L., Eichelberger, J. C., and Rutherford, M. J., 2000, Magma storage and mixing conditions for the 1953-1974 eruptions of Southwest Trident volcano, Katmai National Park, Alaska: Contributions to Mineralogy and Petrology, v. 140, n. 1, p. 99-118, 1 sheet, scale unknown.


Magma storage and mixing conditions for the 1953-74 eruption of southwest Trident Volcano, Katmai National Park, Alaska, 2000
Coombs, M. L., Eichelberger, J. C., and Rutherford, M. J., 2000, Magma storage and mixing conditions for the 1953-74 eruption of southwest Trident Volcano, Katmai National Park, Alaska [abs.]: in Arctic Forum 2000, Abstracts from the Arctic Forum, Washington, DC, May 16-20, 2000, Fairbanks, AK, Arctic Research Consortium of the U.S. (ARCUS), p. 20.


Experimental constraints on mafic enclave formation in volcanic rocks, 1999
Coombs, M. L., Eichelberger, J. C., and Rutherford, M. J., 1999, Experimental constraints on mafic enclave formation in volcanic rocks [abs.]: Eos, v. 80, n. 46, p. 1165.


Mount Dutton volcano, Alaska: Aleutian arc analog to Unzen volcano, Japan, 1999
citation imageMiller, T. P., Chertkoff, D. G., Eichelberger, J. C., and Coombs, M. L., 1999, Mount Dutton volcano, Alaska: Aleutian arc analog to Unzen volcano, Japan: in Nakada, S., Eichelberger, J. C., and Shimizu, H., (eds.), Unzen eruption: Magma ascent and dome growth, Journal of Volcanology and Geothermal Research, v. 89, n. 1, p. 275-301.


The stratigraphy and petrology of the 3400 BP caldera-forming eruption of Aniakchak Volcano, Alaska, 1999
Dreher, S., Coombs, M., Larsen, J., and Eichelberger, J., 1999, The stratigraphy and petrology of the 3400 BP caldera-forming eruption of Aniakchak Volcano, Alaska [abs.]: Transactions, American Geophysical Union, v. 80, n. 17, p. S353.


Magma storage conditions for the rhyolite of the 1912 eruption of Novarupta, Katmai National Park, Alaska, 1999
Gardner, J.E., and Coombs, M.L., 1999, Magma storage conditions for the rhyolite of the 1912 eruption of Novarupta, Katmai National Park, Alaska [abs.]: Transactions, American Geophysical Union, v. 80, n. 46, p. F1105.


Preliminary investigation of the eruptive cycles of Okmok Volcano, Alaska, 1999
Burgisser, Alain, Larsen, J. F., Hazlett, R. W., Coombs, Michelle, Campbell, Matthew, and Eichelberger, John, 1999, Preliminary investigation of the eruptive cycles of Okmok Volcano, Alaska [abs.]: Eos, v. 80, n. 46, p. 1188.


Mafic enclave formation and effusive eruption at two Aleutian arc volcanoes, 1997
Coombs, M. L., Chertkoff, D. G., and Eichelberger, J. C., 1997, Mafic enclave formation and effusive eruption at two Aleutian arc volcanoes [abs.]: Eos, v. 78, n. 46, p. 828.


Seismicity in the vicinity of the Katmai Group of volcanoes, Katmai National Park, Alaska: July 1995-March 1997, 1997
Jolly, A. D., McNutt, S. R., Coombs, M. L., Stihler, S. D., and Paskievitch, J. F., 1997, Seismicity in the vicinity of the Katmai Group of volcanoes, Katmai National Park, Alaska: July 1995-March 1997 [abs.]: Eos, v. 78, n. 46, p. 442.


The mysterious and alluring cognate xenoliths of the New Trident andesite flows, Katmai National Park, Alaska, 1996
Coombs, M. L., 1996, The mysterious and alluring cognate xenoliths of the New Trident andesite flows, Katmai National Park, Alaska [abs.]: Eos, v. 77, n. 46, p. 770.


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