Publications of the

Volcano Hazards Program 2001


By Manuel Nathenson1




Open-File Report 02-492


2002


















This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial 
standards or with the North American Stratigraphic Code.  Any use of trade, product or firm names is for 
descriptive purposes only and does not imply endorsement by the U.S. Government.

U. S. DEPARTMENT OF THE INTERIOR
U. S. GEOLOGICAL SURVEY

1U.S. Geological Survey, 345 Middlefield Road, Menlo Park, California 94025

The Volcano Hazards Program of the U.S. Geological Survey (USGS) is part of the 
Geologic Hazards Assessments subactivity as funded by Congressional appropriation.  
Investigations are carried out in the Geology and Hydrology Disciplines of the USGS and with 
cooperators at the Alaska Division of Geological and Geophysical Surveys, University of 
Alaska Fairbanks Geophysical Institute, University of Hawaii Hilo, University of Utah, and 
University of Washington Geophysics Program.  This report lists publications from all these 
institutions.

This report contains only published papers and maps;  numerous abstracts produced for 
presentations at scientific meetings have not been included.  Publications are included based on 
date of publication with no attempt to assign them to Fiscal Year.

Volcano Hazards Bibliography 2001

Almendros, Javier, Chouet, Bernard, and Dawson, Phillip, 2001, Spatial extent of a 
hydrothermal system at Kilauea Volcano, Hawaii, determined from array analyses of 
shallow long-period seismicity; 1, Method: Journal of Geophysical Research, v. 106, 
p. 13,565-13,580.
Almendros, Javier, Chouet, Bernard, and Dawson, Phillip, 2001, Spatial extent of a 
hydrothermal system at Kilauea Volcano, Hawaii, determined from array analyses of 
shallow long-period seismicity; 2, Results:  Journal of Geophysical Research, v. 106, 
p. 13,581-13,597.
Anderson, D. E., and Farrar, C. D., 2001, Eddy covariance measurement of CO2 flux to the 
atmosphere from an area of high volcanogenic emissions, Mammoth Mountain, California, 
in Bergfeld, Deborah, Goff, Fraser, and Allard, Patrick, eds., High CO2 flux 
measurements in volcanic and geothermal areas, methodologies and results:  Chemical 
Geology, v. 177, p. 31-42.
Bergfeld, Deb, Goff, Fraser, and Janik, C. J., 2001, Carbon isotope systematics and CO2 
sources in The Geysers-Clear Lake region, northern California, USA:  Geothermics, v. 30, 
p. 303-331. 
Bergfeld, Deborah, Goff, Fraser, and Janik, C. J., 2001, Elevated carbon dioxide flux at the 
Dixie Valley geothermal field, Nevada; relations between surface phenomena and the 
geothermal reservoir, in Bergfeld, Deborah, Goff, Fraser, and Allard, Patrick, eds., High 
CO2 flux measurements in volcanic and geothermal areas, methodologies and results: 
Chemical Geology, v. 177, p. 43-66.
Blakely, Richard, Christiansen, Robert, Ramsey, David, Robinson, Joel, and Smith, James, 
2001, Digital ShastaÑApplying GIS technology to volcano hazards, in ESRI Map Book, 
v. 16, ESRI Press, Redlands, California, p. 54-55. 
Blakely, Richard, Christiansen, Robert, Ramsey, David, Robinson, Joel, and Smith, James, 
2001, Digital Shasta: Applying GIS technology to volcano hazards: ArcUser, v. 4, no. 3, 
p. 66-67. 
Christiansen, R. L., 2001, The Quaternary and Pliocene Yellowstone Plateau volcanic field of 
Wyoming, Idaho, and Montana:  U.S. Geological Survey Professional Paper 729-G, 
145 p., 3 plates, scale 1:125,000.
Cook, A. C., Hainsworth, L. J., Sorey, M. L., Evans, W. C., and Southon, J. R., 2001, 
Radiocarbon studies of plant leaves and tree rings from Mammoth Mountain, CA: a long-
term record of magmatic CO2 release, in Bergfeld, Deborah, Goff, Fraser, and Allard, 
Patrick, eds., High CO2 flux measurements in volcanic and geothermal areas, 
methodologies and results: Chemical Geology, v. 177, p. 117-131.
Coombs, M. L., and Gardner, J. E., 2001, Shallow-storage conditions for the rhyolite of the 
1912 eruption at Novarupta, Alaska:  Geology, v. 29, p. 775-778.
Denlinger, R. P., and Iverson, R. M., 2001, Flow of variably fluidized granular masses 
across three-dimensional terrain, 2. Numerical predictions and experimental tests:  Journal 
of Geophysical Research, v. 106, p. 553-566.
Duffield, W. A., 2001, At least Noah had some warning: Eos Transactions of the American 
Geophysical Union, v. 82, n. 28, p. 305, 309.
Duffield, W. A., 2001, At least Noah had some warning: Earth in Space, v. 14, p. 5-10.
Eichelberger, J. C., Chertkoff, D. G., Dreher, S. T., and Nye, C. J., 2001, Reply to 
comment by deSilva, Shanaka, on Magmas in collision; rethinking chemical zonation in 
silicic magmas: Geology, v. 29, p. 1063-1064. 
Evans, W. C., Sorey, M. L., Kennedy, B. M., Stonestrom, D. A., Rogie, J. D., and Shuster, 
D. L., 2001, High CO2 emissions through porous media: transport mechanisms and 
implications for flux measurement and fractionation, in Bergfeld, Deborah, Goff, Fraser, 
and Allard, Patrick, eds., High CO2 flux measurements in volcanic and geothermal areas, 
methodologies and results:  Chemical Geology, v. 177, p. 15-29.
Evans, W. C., Sorey, M. L., Michel, R. L., Cook, A. C., Kennedy, B. M., and Busenberg, 
E., 2001, Tracing magmatic carbon in groundwater at Big Springs, Long Valley caldera, 
USA, in Cidu, Rosa, ed., Proceedings Tenth International Symposium on Water-Rock 
Interaction, Villasimus, Italy, July 10-15, 2001, A. A. Balkema, Lisse, p. 803-806.
Fierstein, Judy, and Hildreth, Wes, 2001, Preliminary volcano-hazard assessment for the 
Katmai volcanic cluster, Alaska:  U.S. Geological Survey Open-File Report 00-489, 50 p., 
1 plate. 
Finn, Carol, and Sisson, Thomas, 2001, Hunting Mount Rainier's danger zones:  Geotimes. 
v. 46, no. 8, p. 28-29.
Finn, C. A., Sisson, T. W., and Deszcz-Pan, Maryla, 2001, Aerogeophysical measurements 
of collapse-prone hydrothermally altered zones at Mount Rainier volcano:  Nature, v. 409, 
p. 600-603.
Foulger, G. R., Pritchard, M. J., Julian, B. R., Evans, J. R., Allen, R. M., Nolet, G., 
Morgan, W. J., Bergsson, B. H., Erlendsson, P., Jakobsdottir, S., Ragnarsson, S., 
Stefansson, R., and Vogfjšrd, K., 2001, Seismic tomography shows that upwelling 
beneath Iceland is confined to the upper mantle:  Geophysical Journal International, v. 146, 
p. 504-530. 
Gardner, J. V., and Dartnell, Peter, 2001, 2000 multibeam sonar survey of Crater Lake, 
Oregon: Data, GIS, images, and movies:  U.S. Geological Survey Digital Data Series 
DDS-72, 1 CD-ROM.
Gardner, J. V., Dartnell, Peter, Hellequin, Laurent, Bacon, C. R., Mayer, L. A., Buktenica, 
M. W., and Stone, J. C., 2001, Bathymetry and selected perspective views of Crater Lake, 
OR:  U.S. Geological Survey Water Resources Investigations Report 01-4046, 2 plates, 
scale 1:15,000.
Gerlach, T. M., Doukas, M. P., McGee, K. A., and Kessler, R., 2001, Soil efflux and total 
emission rates of magmatic CO2 at the Horseshoe Lake tree kill, Mammoth Mountain, 
California, 1995Ð1999, in Bergfeld, Deborah, Goff, Fraser, and Allard, Patrick, eds., 
High CO2 flux measurements in volcanic and geothermal areas, methodologies and results:  
Chemical Geology, v. 177, p. 101-116.
Goff, Fraser, Bergfeld, Deborah, Janik, C. J., Counce, Dale, and Stimac, J. A., 2001, 
Geochemical data on waters, gases, rocks, and sediments from The Geysers-Clear Lake 
region, California (1991-2000):  Los Alamos National Laboratory, LA-13882-MS, 44 p. 
Guffanti, Marianne, Brantley, S. R., and McClelland, Lindsay, 2001, eds., Volcanism in 
National Parks: Summary of the workshop convened by the U.S. Geological Survey and 
National Park Service, 26-29 September 2000, Redding, California:  U.S. Geological 
Survey Open-File Report 01-435, 43 p.
Harris, A. J. L., Pilger, E., Flynn, L. P., Garbeil, H., Mouginis-Mark, P. J., Kauahikaua, J. 
and Thornber, C., 2001, Automated, high temporal resolution thermal analysis of Kilauea 
volcano, HawaiÔi, using GOES satellite data:  International Journal of Remote Sensing, 
v. 22, p. 945-967
Haslinger, Florian, Thurber, Clifford, Mandernach, Megan, and Okubo, Paul, 2001, 
Tomographic image of P-velocity structure beneath Kilauea's East Rift Zone and South 
Flank: seismic evidence for a deep magma body:  Geophysical Research Letters, v. 28, 
p. 375-378.
Heliker, Christina, Ulrich, G. E., Margriter, S. C., and Hoffman, J. P., 2001, Maps showing 
the development of the PuÔu Ô-OÔ-o  - K-upaianaha flow field, June 1984-February 1987, 
Køilauea Volcano, Hawaii:  U.S. Geological Survey Geologic Investigations I-2685, 
4 plates, scale 1:50,000.
Hildreth, Wes, Fierstein, Judy, Lanphere, M. A., and Siems, D. F., 2001, Snowy Mountain: 
A pair of small andesite-dacite stratovolcanoes in Katmai National Park, in Gough, L. P., 
and Wilson, F. H., eds., Geologic studies in Alaska by the U.S. Geological Survey, 1999:  
U.S. Geological Survey Professional Paper 1633,  p. 13-34.
Howle, J. F., and Farrar, C. D., 2001, Hydrologic data for Long Valley Caldera, Mono 
County, California, 1994-1996:  U.S. Geological Survey Open-File Report 00-230, 155 p.
Ingebritsen, S. E., Galloway, D. L., Colvard, E. M., Sorey, M. L., and Mariner, R. H., 
2001, Time-variation of hydrothermal discharge at selected sites in the western United 
States: Implications for monitoring:  Journal of Volcanology and Geothermal Research, 
v. 111, p. 1-23.
Iverson, N. R., and Iverson, R. M., 2001, Distributed shear of subglacial till due to Coulomb 
slip:  Journal of Glaciology, v. 47, p. 481-488.
Iverson, R. M., and Denlinger, R. P., 2001, Flow of variably fluidized granular masses 
across three-dimensional terrain, 1. Coulomb mixture theory:  Journal of Geophysical 
Research, v. 106, p. 537-552.
Iverson, R. M., and Denlinger, R. P., 2001, Mechanics of debris flows and debris-laden flash 
floods: Proceedings of the Seventh Federal Interagency Sedimentation Conference, Reno, 
Nevada, March 25-29, 2001, v. 1, p. IV-1 - IV-8.
Iverson, R. M., and Vallance, J. W., 2001, New views of granular mass flows:  Geology, 
v. 29, p. 115-118.
Johnston, David, Paton, Douglas, Driedger, Carolyn, Houghton Bruce, and Ronan, Kevin, 
2001, Student Perceptions of hazards at four schools near Mount Rainier, Washington, 
USA: Journal of the American Society of Professional Emergency Planners, v. 8, p. 41-
51.
Johnston, M. J. S., Byerlee, J. D., and Lockner, D., 2001, Rapid fluid disruption: A source 
for self-potential anomalies on volcanoes:  Journal of Geophysical Research, v. 106, 
p. 4327-4335.
Jolly, A. D., Stihler, S. D., Power, J. A., Lahr, J. C., Paskievitch, John, Tytgat, Guy, Estes, 
Steve, Lockhart, A. B., Moran, S. C., McNutt, S. R., and Hammond, W. R., 2001, 
Catalog of earthquake hypocenters at Alaskan volcanoes; January 1, 1994 through 
December 31, 1999:  U.S. Geological Survey Open-File Report 01-189, 22 p., data files, 
available at http://geopubs.wr.usgs.gov/open-file/of01-189/
Klein, F. W., Frankel, A. D., Mueller, C. S., Wesson, R. L., and Okubo, P. G., 2001, 
Seismic hazard in Hawaii: High rate of large earthquakes and probabilistic ground-motion 
maps:  Bulletin of the Seismological Society of America, v. 91, p. 479-498.
Kumagai, Hiroyuki, and Chouet, B. A., 2001, The dependence of acoustic properties of a 
crack on resonance model and geometry:  Geophysical Research Letters, v. 28, p. 3325-
3328.
Lane, S. J., Chouet, B. A., Phillips, J. C., Dawson, Phillip, Ryan, G. A., and Hurst, Emma, 
2001, Experimental observations of pressure oscillations and flow regimes in an analogue 
volcanic system:  Journal of Geophysical Research, v. 106, p. 6461-6476.
Lanphere, Marvin, 2001, Contributions to subject; reference material, new fluence monitor for 
40Ar/39Ar dating, in Odin, G. S., ed., Phanerozoic time scale:  Bulletin of Liaison and 
Informations, Phanerozoic Time Scale, v. 16, p. 16.
Lanphere, M. A., 2001, Duration of sedimentation of the Creede Formation, in Bethke, P. M., 
ed., Preliminary scientific results of the Creede Caldera Continental Drilling Program: U.S. 
Geological Survey Open-File Report 94-260-C, 4 p.
Lanphere, M. A., and Baadsgaard, H., 2001, Precise KÐAr, 40Ar/39Ar, RbÐSr and U/Pb 
mineral ages from the 27.5 Ma Fish Canyon Tuff reference standard: Chemical Geology, 
v. 175, p. 653-671.
Larson, K. M., Cervelli, Peter, Lisowski, Michael, Miklius, Asta, Segall, Paul, and Owen, 
Susan, 2001, Volcano monitoring using the Global Positioning System: Filtering 
strategies:  Journal of Geophysical Research, v. 106, p. 19,453-19,464.
Lipman, P. W., and Weston, P. E., 2001, Phenocryst compositions of late ash-flow tuffs 
from the central San Juan Caldera cluster:  Results from Creede drill-hole samples and 
implications for regional stratigraphy, in Bethke, P. M., ed., Preliminary scientific results 
of the Creede Caldera Continental Drilling Program: U.S. Geological Survey Open-File 
Report 94-260-B, 43 p.
Lowenstern, J. B., 2001, Carbon dioxide in magmas and implications for hydrothermal 
systems:  Mineralium Deposita, v. 36, p. 490-502.
Major, J. J., Schilling, S. P, Pullinger, C. R., Escobar, C. D., Chesner, C. A., and Howell, 
M. M., 2001, Lahar-hazard zonation for San Miguel Volcano, El Salvador:  U.S. 
Geological Survey Open-File Report 01-395, 16 p., 1 plate, scale 1:50,000, available at 
http://vulcan.wr.usgs.gov/Volcanoes/ElSalvador/Publications/OFR01-395/
Major, J. J., Schilling, S. P, Pullinger, C. R., Escobar, C. D., and Howell, M. M., 2001, 
Volcano-hazard zonation for San Vicente Volcano, El Salvador:  U.S. Geological Survey 
Open-File Report 01-367, 22 p., 1 plate, scale 1:50,000, available at 
http://vulcan.wr.usgs.gov/Volcanoes/ElSalvador/Publications/OFR01-367/
Major, J. J., Schilling, S. P, Sofield, D. J., Escobar, C. D., and Pullinger, C. R., 2001, 
Volcano hazards in the San Salvador region, El Salvador:  U.S. Geological Survey Open-
File Report 01-366, 24 p., 2 plates, scale 1:50,000, available at 
http://vulcan.wr.usgs.gov/Volcanoes/ElSalvador/Publications/OFR01-366/
Marzocchi, W., Vilardo, G., Hill, D. P., Ricciardi, G. P., and Ricco, C., 2001, Common 
features and peculiarities of the seismic activity at Phlegraean Fields, Long Valley, and 
Vesuvius:  Bulletin of the Seismological Society of America, v. 91, p. 191-205.
Mastin, L. G., 2001, A simple calculator of ballistic trajectories for blocks ejected during 
volcanic eruptions:  U.S. Geological Survey Open-File Report 01-45, 16p., available at 
http://vulcan.wr.usgs.gov/Projects/Mastin/Publications/OFR01-45/framework.html
Mastin, L. G., and Ghiorso, M. S., 2001, Adiabatic temperature changes of magma-gas 
mixtures during ascent and eruption:  Contributions to Mineralogy and Petrology, v. 141, 
p. 307-321.
McGee, K. A., Doukas, M. P., and Gerlach, T. M., 2001, Quiescent hydrogen sulfide and 
carbon dioxide degassing from Mount Baker, Washington: Geophysical Research Letters, 
v. 28, p. 4479-4482.
McGimsey, R. G, 2001, Redoubt Volcano and the Alaska Volcano Observatory, 10 years 
later, in Gough, L. P., and Wilson, F. H., eds., Geologic studies in Alaska by the U.S. 
Geological Survey, 1999:  U.S. Geological Survey Professional Paper 1633, p. 5-12.
McGimsey, R. G., Neal, C. A., and Riley, C. M., 2001, Areal distribution, thickness, mass, 
volume, and grain size of tephra-fall deposits from the 1992 eruptions of Crater Peak vent, 
Mt. Spurr Volcano, Alaska:  U.S. Geological Survey Open-File Report 01-370, 32 p., 
3 plates, available at http://geopubs.wr.usgs.gov/open-file/of01-370/
Moore, D. E., Hickman, S., Lockner, D. A., and Dobson, P. F., 2001, Hydrothermal 
minerals and microstructures in the Silangkitang geothermal field along the Great Sumatran 
fault zone, Sumatra, Indonesia: Geological Society of America Bulletin, v. 113, p. 1179-
1192.
Moore, J. G., 2001, Density of basalt core from Hilo drill hole, Hawaii:  Journal of 
Volcanology and Geothermal Research, v. 112, p. 221-230.
Morrissey, M. M., and Chouet, B. A., 2001, Trends in long-period seismicity related to 
magmatic fluid compositions, in Allard, Patrick, Shinohara, Hiroshi, and Wallace, Paul, 
eds., Magma degassing through volcanoes; A tribute to Werner F. Giggenbach:  Journal of 
Volcanology and Geothermal Research, v. 108, p. 265-281.
Nakata, J. S., 2001, Hawaiian Volcano Observatory; Summary 100; Part I, Seismic data, 
January to December 2000, with a chronological summary by Heliker, C., and Sherrod, 
D.:  U.S. Geological Survey Open-File Report 01-332, 67 p.
Nathenson, Manuel, 2001, Probabilities of volcanic eruptions and application to the recent 
history of Medicine Lake Volcano, in Vecchia, A. V., compiler, A Unified Approach to 
Probabilistic Risk Assessments for Earthquakes, Floods, Landslides, and Volcanoes, 
November 16-17, 1999, Golden, Colorado: U.S. Geological Survey Open-File Report 01-
324, p. 71-74.
Nathenson, Manuel, 2001, Publications of the Volcano Hazards Program 1999:  U.S. 
Geological Survey Open-File Report 01-14, 7 p.
Nathenson, Manuel, 2001, Publications of the Volcano Hazards Program 2000:  U.S. 
Geological Survey Open-File Report 01-464, 12 p. 
Neal, Christina, McGimsey, Robert, and Diggles, M. F., 2001, Volcanoes of the Wrangell 
Mountains and Cook Inlet region, AlaskaÑselected photographs:  U.S. Geological Survey 
Digital Data Series DDS-39, version 1.1, available at http://wrgis.wr.usgs.gov/dds/dds-39/
Neal, C. A., 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 00-519, 35 p., 1 plate.
Newhall, C. G., Albano, S. E., Matsumoto, N. and Sandoval, T., 2001. Roles of 
groundwater in volcanic unrest:  Journal Geological Society of the Philippines, v. 56, 
p. 69-84. 
O'Connor, J. E., Hardison, J. H., III, and Costa, J. E., 2001, Debris flows from failures of 
Neoglacial-age moraine dams in the Three Sisters and Mount Jefferson Wilderness Areas, 
Oregon:  U.S. Geological Survey Professional Paper 1606, 93 p., 2 plates, scale 
1:24,000.
Pauk, B. A., Power, J. A., Lisowski, Mike, Dzurisin, Dan, Iwatsubo, E. Y., and Melbourne, 
Tim, 2001, Global Positioning System (GPS) survey of Augustine Volcano, Alaska, 
August 3-8, 2000: Data processing, geodetic coordinates and comparison with prior 
geodetic surveys: U.S. Geological Survey Open-File Report 01-99, 20 p., data files, 
available at http://geopubs.wr.usgs.gov/open-file/of01-099/
Power, J. A., Moran, S. C.,. McNutt, S. R, Stihler, S. D., and Sanchez, J. J., 2001, Seismic 
response of the Katmai volcanoes to the 6 December 1999 magnitude 7.0 Karluk Lake 
earthquake, Alaska:  Bulletin of the Seismological Society of America, v. 91, p. 57-63.
Prejean, S. G., and Ellsworth, W. L., 2001, Observations of earthquake source parameters at 
2 km depth in the Long Valley Caldera, eastern California:  Bulletin of the Seismological 
Society of America, v. 91, p. 165-177.
Priest, S. S., Duffield, W. A., Malis-Clark, Karen, Hendley, J. W., II, and Stauffer, P. H., 
2001, The San Francisco Volcanic Field, Arizona:  U.S. Geological Survey Fact Sheet 17-
01, 2 p.
Reid, M. E., Sisson, T. W., and Brien, D. L., 2001, Volcano collapse promoted by 
hydrothermal alteration and edifice shape, Mount Rainier, Washington:  Geology, v. 29, 
p. 779-782.
Reynolds, R. L., Rosenbaum, J. G., Sweetkind, D. S., Lanphere, M. A., Rice, C. A., and. 
Tuttle, M. L., 2001, Rock magnetic studies of the Oligocene Creede Formation and 
prospects for a polarity stratigraphy, in Bethke, P. M., ed., Preliminary scientific results of 
the Creede Caldera Continental Drilling Program: U.S. Geological Survey Open-File 
Report 94-260-M, 44 p.
Roach, A. L., Benoit, J. P., Dean, K. G., and McNutt, S. R., 2001, The combined use of 
satellite and seismic monitoring during the 1996 eruption of Pavlof volcano, Alaska: 
Bulletin of Volcanology, v. 62, p. 385-399.
Rogie, J. D., Kerrick, D. M., Sorey, M. L., Chiodini, Giovanni, and Galloway, D. L., 2001, 
Dynamics of carbon dioxide emission at Mammoth Mountain, California:  Earth and 
Planetary Science Letters, v. 188, p. 535-541.
Rose, W. I., 2001, Remote sensing of volcanic clouds shows promise:  Eos Transactions of 
the American Geophysical Union, v. 82, n. 41, p. 471.
Rose, W. I., Bluth, G. J. S., Schneider, D. J., Ernst, G. G. J., Riley, C. M., Henderson, L. 
J., and McGimsey, R. G., 2001, Observations of volcanic clouds in their first few days of 
atmospheric residence: The 1992 eruptions of Crater Peak, Mount Spurr Volcano, Alaska:  
Journal of Geology, v. 109, p. 677-694.
Saccorotti, Gilberto, Chouet, Bernard, and Dawson, Phillip, 2001, Wavefield properties of a 
shallow long-period event and tremor at Kilauea Volcano, Hawaii:  Journal of Volcanology 
and Geothermal Research, v. 109, p. 163-189.
Sass, John, 2001, Great Basin geothermal:  Geothermal Resources Council Bulletin, v. 30, 
p. 195-197.
Schilling, S. P., Vallance, J. W. , Mat’as, O., and Howell, M. M., 2001, Lahar hazards at 
Agua Volcano, Guatemala:  U.S. Geological Survey Open-File Report 01-432, 16 p., 
1 plate, scale 1:50,000, available at 
http://vulcan.wr.usgs.gov/Volcanoes/Guatemala/Publications/OFR01-432/
Scott, K. M., Mac’as, J. L., Naranjo, J. A., Rodr’guez, Sergio, and McGeehin, J. P., 2001, 
Catastrophic debris flows transformed from landslides in volcanic terrains: Mobility, 
hazard assessment, and mitigation strategies: U.S. Geological Survey Professional Paper 
1630, 59 p.
Segall, Paul, Cervelli, Peter, Owen, Susan, Lisowski, Mike, and Miklius, Asta, 2001, 
Constraints on dike propagation from continuous GPS measurements:  Journal of 
Geophysical Research, v. 106, p. 19,301-19,317.
Sisson, T. W., Vallance, J. W., and Pringle, P. T., 2001, Progress made in understanding 
Mount Rainier's hazards:  Eos Transactions American Geophysical Union, v. 82, p. 113, 
118-120.
Sorey, Mike, Evans, William, McGimsey, R. G. and Werner, Cindy, 2001, Magmatic carbon 
and helium discharge from Shrub Mud Volcano, Copper River Basin, southeastern Alaska, 
USA, in Cidu, Rosa, ed., Proceedings Tenth International Symposium on Water-Rock 
Interaction, Villasimus, Italy, July 10-15, 2001, A. A. Balkema, Lisse, p. 919-922.
Stephens, C. D., and Chouet, B. A., 2001, Evolution of the December 14, 1989 precursory 
long-period event swarm at Redoubt Volcano, Alaska:  Journal of Volcanology and 
Geothermal Research, v. 109, p. 133-148.
Sutton, A. J., Elias, T., Gerlach, T. M., and Stokes, J. B., 2001, Implications for eruptive 
processes as indicated by sulfur dioxide emissions from K-ilauea Volcano, HawaiÔi, 1979-
1997, in Allard, Patrick, Shinohara, Hiroshi, and Wallace, Paul, eds., Magma degassing 
through volcanoes; A tribute to Werner F. Giggenbach:  Journal of Volcanology and 
Geothermal Research, v. 108, p. 283-302.
Symonds, R. B., Gerlach, T. M., and Reed, M. H., 2001, Magmatic gas scrubbing: 
implications for volcano monitoring, in Allard, Patrick, Shinohara, Hiroshi, and Wallace, 
Paul, eds., Magma degassing through volcanoes; A tribute to Werner F. Giggenbach:  
Journal of Volcanology and Geothermal Research, v. 108, p. 303-341.
Tanton, L. T. E., Grove, T. L., and Donnelly-Nolan, Julie, 2001, Hot, shallow mantle 
melting under the Cascades volcanic arc:  Geology, v. 29, p. 631-634.
Thornber, C. R., 2001, Olivine-liquid relations of lava erupted by Køilauea Volcano from 1994 
to 1998: Implications for shallow magmatic processes associated with the ongoing East-
Rift-zone eruption, in Canil, D. , Jamieson, H. E., and Martin, R. F., eds., Phase 
equilibria in basaltic systems; a tribute to Peter L. Roeder:  The Canadian Mineralogist, 
v. 39, p. 239-266.
Tilling, R. I., 2001, Volcanoes and volcanology:  American Geological Institute Fact Sheet, 
3 p. 
Tilmann, F. J., Benz, H. M., Priestley, K. F., and Okubo, P. G., 2001, P-wave velocity 
structure of the uppermost mantle beneath Hawaii from traveltime tomography:  
Geophysical Journal International, v. 146, p. 594-606.
Tomatsu, Toshitaka, Kumagai, Hiroyuki, and Dawson, P. B., 2001, Tomographic inversion 
of P-wave velocity and Q structures beneath the Kirishima volcanic complex, southern 
Japan, based on finite difference calculations of complex traveltimes:  Geophysical Journal 
International, v. 146, p. 781-794.
Vallance, J. W. , Schilling, S. P., and Devoli, G., 2001, Lahar hazards at Mombacho 
Volcano, Nicaragua:  U.S. Geological Survey Open-File Report 01-455, 16 p., 1 plate, 
scale 1:50,000, available at 
http://vulcan.wr.usgs.gov/Volcanoes/Nicaragua/Publications/OFR01-455/
Vallance, J. W. , Schilling, S. P., Devoli, G., and Howell, M. M., 2001, Lahar hazards at 
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