Summit crater lake observations, and the location, chemistry, and pH of water samples near Mount Chiginagak volcano, Alaska: 2004-2012, 2013
Schaefer, J.R., Scott, W.E., Evans, W.C., Wang, Bronwen, and McGimsey, R.G., 2013, Summit crater lake observations, and the location, chemistry, and pH of water samples near Mount Chiginagak volcano, Alaska: 2004-2012: Alaska Division of Geological & Geophysical Surveys Report of Investigation 2011-6 v. 2, 25 p., available online at www.dggs.gov/pubs/id/25602 .
link to publication on ADGGS website 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
full-text pdf : 6.3 MB
Injection, transport, and deposition of tephra during event 5 at Redoubt Volcano, 23 March, 2009, 2013
Mastin, L.G., Schwaiger, Hans, Schneider, D.J., Wallace, K.L., Schaefer, Janet, and Denlinger, R.P., 2013, Injection, transport, and deposition of tephra during event 5 at Redoubt Volcano, 23 March, 2009: Journal of Volcanology and Geothermal Research, v. 259, p. 201-213, doi:10.1016/j.jvolgeores.2012.04.025
http://dx.doi.org/10.1016/j.jvolgeores.2012.04.025 full-text pdf : 5.6 MB
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.
link to PDF on ADGGS website Character, mass, distribution, and origin of tephra-fall deposits from the 2009 eruption of Redoubt Volcano, Alaska - Highlighting the significance of particle aggregation, 2012
Wallace, K.L., Schaefer, J.R., and Coombs, M.L., 2012, 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 Historically active volcanoes of Alaska, 2011
Schaefer, J.R., Cameron, C.E., and Nye, C.J., 2011, Historically active volcanoes of Alaska: Alaska Division of Geological and Geophysical Surveys Miscellaneous Publication 133 v 1,1, 1 sheet, scale 1:3,000,000, available at http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=20181 .
PDF files on DGGS's web site Digital elevation model (DEM) and shaded relief image of Okmok Caldera, 2010, 2011
Schaefer, J.R., Larsen, J.F., and Unema, J.A., 2011, Digital elevation model (DEM) and shaded relief image of Okmok Caldera, 2010: Alaska Division of Geological & Geophysical Surveys Raw Data File 2011-6, 1 DVD, available online at http://www.dggs.dnr.state.ak.us/pubs/id/23223 .
link to ADGGS website with GIS files for download The variegated (VT) tephra: A new regional marker for middle to late marine isotope stage 5 across Yukon and Alaska, 2011
Jensen, 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 The July-August 2008 hydrovolcanic eruption of Okmok Volcano, Umnak Island, Alaska, 2009
Neal, C.A., Larsen, J.F., and Schaefer, Janet, 2009, The July-August 2008 hydrovolcanic eruption of Okmok Volcano, Umnak Island, Alaska: Alaska Geological Society Newsletter, v. 39, n. 5, p. 1-3.
Eruption of Alaska volcano breaks historic pattern, 2009
Larsen, J., Neal, C., Webley, P., Freymueller, J., Haney, M., McNutt, S., Schneider, D., Prejean, S., Schaefer, J., and Wessels, R., 2009, Eruption of Alaska volcano breaks historic pattern: Eos, Transactions, American Geophysical Union, v. 90, n. 20, p. 173-174.
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 .
full-text PDF on AVO's server : 5.68 MB
ADGGS website with link to PDF Preliminary bathymetric map of Mother Goose Lake, Alaska Peninsula, 2008
Schaefer, J.R., Wallace, K.L., and Kassel, C.M., 2008, Preliminary bathymetric map of Mother Goose Lake, Alaska Peninsula: Alaska Division of Geological & Geophysical Surveys Raw Data File 2008-3, 1 disc, available at http://www.dggs.dnr.state.ak.us/pubs/id/16301 .
DGGS site with links to data, GIS, and metadata files The 2005 catastrophic acid crater lake drainage, lahar, and acidic aerosol formation at Mount Chiginagak volcano, Alaska, USA: Field observations and preliminary water and vegetation chemistry results, 2008
Schaefer, J. R., W. E. Scott, W. C. Evans, J. Jorgenson, R. G. McGimsey, and B. Wang, 2008, The 2005 catastrophic acid crater lake drainage, lahar, and acidic aerosol formation at Mount Chiginagak volcano, Alaska, USA: Field observations and preliminary water and vegetation chemistry results: Geochemistry Geophysics Geosystems, v. 9, n. 7, 29 p., Q07018, doi:10.1029/2007GC001900.
http://dx.doi.org/10.1029/2007GC001900 A phytotoxic dense gas flow produced during the crater lake breakout at Chiginagak Volcano, Alaska, 2008
Pfeffer, Melissa, and Schaefer, Janet, 2008, A phytotoxic dense gas flow produced during the crater lake breakout at Chiginagak Volcano, Alaska [abs.]: 33rd International Geological Congress, Oslo, Norway.
Late Pleistocene and Holocene caldera-forming eruptions of Okmok Caldera, Aleutian Islands, Alaska, 2007
Larsen, 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.
Crisis GIS: Preparing for and responding to volcanic eruptions in the United States, 2007
Ramsey, D. W., Robinson, J. E., Schilling, S. P., Schaefer, J. R., and Trusdell, F. A.,
2007, Crisis GIS: Preparing for and responding to volcanic eruptions in the United States, in Thomas, C., ed., Standards for Success: GIS for Federal Progress and Accountability: Redlands, California, ESRI Press, p. 3-8.
The 2005 crater lake formation, lahar, acidic flood, and caustic aerosol and gas release from Chiginagak Volcano, Alaska, 2006
Schaefer, J.R., Scott, W.E., McGimsey, R.G., and Jorgenson, Janet, 2006, The 2005 crater lake formation, lahar, acidic flood, and caustic aerosol and gas release from Chiginagak Volcano, Alaska [abs.]:
Geological Society of America - Abstracts with Programs, v. 38, n. 5, p. 29.
Preliminary volcano-hazard assessment for Okmok Volcano, Umnak Island, Alaska, 2005
Beget, 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.
full text of report : 3.4 MB
map sheet : 53.2 MB
link to all files for this report on DGGS website The 2005 crater lake formation, lahar, acidic flood, and gas emission from Chiginagak volcano, Alaska, 2005
Schaefer, J.R., Scott, W.E., McGimsey, R.G., Jorgenson, Janet, 2005, The 2005 crater lake formation, lahar, acidic flood, and gas emission from Chiginagak volcano, Alaska, [abs.]: EOS, Transactions of the American Geophysical Union Fall Meeting Supplement, Abstract V21E-0675.
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
link to PDF files on DGGS website of MP133, which updates MP123 The 1999 eruption of Shishaldin Volcano, Alaska: monitoring a distant eruption, 2002
Nye, C. J., Keith, T. E. C., Eichelberger, J. C., Miller, T. P., McNutt, S. R., Moran, S., Schneider, D. J., Dehn, J., and Schaefer, J. R., 2002, The 1999 eruption of Shishaldin Volcano, Alaska: monitoring a distant eruption: Bulletin of Volcanology, v. 64, n. 8, p. 507-519.
http://dx.doi.org/10.1007/s00445-002-0225-2 Preliminary volcano-hazard assessment for Shishaldin Volcano, Alaska, 2002
Beget, 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.
full-text PDF : 2.25 MB
Stratigraphy, major oxide geochemistry, and 40Ar/39Ar geochronology of a tephra section near Tok, Alaska, 2002
Schaefer, J. R. G., 2002, Stratigraphy, major oxide geochemistry, and 40Ar/39Ar geochronology of a tephra section near Tok, Alaska: University of Alaska Fairbanks unpublished M.S. thesis, 62 p.
full-text PDF : 2.06 MB
(super 40) Ar/ (super 39) Ar dating of Quaternary low-potassium hornblende from a fine-grained Alaskan tephra by total laser-fusion, 2000
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.
Schaefer, J. R., 2005, 30-meter shaded relief image of Okmok Volcano, Umnak Island, Alaska: Alaska Division of Geological & Geophysical Surveys Raw Data File RDF 2005-01, 1 CD-ROM.
TIFF image file : 17.4 MB
metadata for RDF 2005-01 : 23 KB
@alaska_avo
alaska.avo
Receive volcano updates by email: USGS VNS