Steven Ingebritsen, Ph.D.

Research topics include magmatic-hydrothermal systems, crustal permeability, and land subsidence

Biography

BA Geology, Carleton College

MS and PhD hydrogeology, Stanford University

Member of the U.S. Geological Survey (USGS) since 1980

 

Served a 10-year term as a USGS Branch Chief (1998-2008), managing a $19M/year research program with about 150 full- and part-time employees and contractors.  Fellow of both the American Geophysical Union and the Geological Society of America (GSA); recipient of the O.E. Meinzer Award from GSA and the John Hem Award from the National Ground Water Association; and a GSA Birdsall-Dreiss Distinguished Lecturer.  Author of the textbook Groundwater in Geologic Processes (Cambridge University Press, 1998, 2nd ed. 2006) and co-Editor of Crustal Permeability (Wiley/AGU, 2016).  Past co-Editor-in-Chief of Geothermics (1996-1998) and Geofluids (2006-2010) and past Chair of GSA’s Hydrogeology Division.

 

DATA AND MODELS

Hydrothermal monitoring data from the Cascade Range:  https://volcanoes.usgs.gov/observatories/cvo/monitoring_hydrothermal.html

Hydrothermal discharge at selected sites in the western US (Ingebritsen and others, JVGR, 2001):  https://volcanoes.usgs.gov/water/hydrothermal/hydrothermal_abstract.pdf

Geyser-frequency data from Upper Geyser Basin (Rojstaczer and others, 2003):  https://volcanoes.usgs.gov/vsc/file_mngr/file-191/geyserdata.pdf

HYDROTHERM model:  https://volcanoes.usgs.gov/software/hydrotherm/

 

 

PUBLICATIONS

Google Scholar profile:  http://scholar.google.com/citations?user=PI5ybd0AAAAJ&hl=en&oi=ao

Selected pdf files available at http://wwwrcamnl.wr.usgs.gov/hydrotherm/Ingebritsen.htm

 

Chen, K., Zhan, H., Burns, E.R., Ingebritsen, S.E., and Agrinier, P., 2018, The influence of episodic shallow magma degassing on heat and chemical transport in volcanic hydrothermal systems:  Geophysical Research Letters, v. 45, https://doi.org/10.1002/2017GL076449.

Crankshaw, I.M., Archfield, S.A., Newman, A.C., Bergfeld, D., Clor, L.E., Spicer, K.R., Kelly, P.J., Evans, W.C., and Ingebritsen, S.E., 2018, Multi-year high-frequency hydrothermal monitoring of selected high-threat Cascade Range volcanoes:  Journal of Volcanology and Geothermal Research, v. 356, p. 24-35, doi:10.1016/j.jvolgeores.2018.02.014.

Ingebritsen, S.E., and Gleeson, Tom, 2017, Crustal permeability:  Hydrogeology Journal, v. 25, p. 2221-2224, doi:10.1007/s10040-017-1663-4.

Coulon, C.A., Hsieh, P.A., White, R., Lowenstern, J.B., and Ingebritsen, S.E., 2017, Exploring the causes of distal volcano-tectonic (dVT) seismicity using hydrothermal modeling:  Journal of Volcanology and Geothermal Research, v. 345, p. 98-108, doi.org/10.1016/j.jvolgeores.2017.07.011.

Kempton, P., Bose, R., Burkett, V., Dixon, J., Driese, S., Elder, D., Gomez, F., Hamburger, M., Houghton, B., Hovis, G., Ingebritsen, S.E., Kelley, P., Koretsky, C., Lithgow-Bertelloni, C., Melbourne, T., Roering, J., and Rustad, J., 2017, NSF GEO Earth Sciences Division COV Report, https://nsf.gov/geo/adgeo/advcomm/fy2017_cov/ear-cov-2017-report.pdf.

Burns, E.R., Zhu, Y., Zhan, H., Manga, M., Williams, C.F., Ingebritsen, S.E., and Dunham, J., 2017, Thermal effects of climate change on groundwater-fed ecosystems:  Water Resources Research, v. 53, p. 3341-3351, doi:10.1002/2016WR020007.

Watanabe, N., Numakura, T., Sakaguchi, K., Saishu, H., Okamoto, A., Ingebritsen, S.E, and Tsuchiya, N., 2017, Potentially exploitable geothermal reservoirs may form in the ductile crust:  Nature Geoscience, v. 10, p. 140-144, doi:10.1038/NGEO2879.

Yamaoka, K., Geshi, N., Hashimoto, T., Ingebritsen, S.E., and Oikawa, T., 2016, Special issue “The phreatic eruption of Mt. Ontake volcano in 2014”:  Earth, Planets, and Space, v. 68, doi:10.1186/s40623-016-0548-4.

Gleeson, T., and Ingebritsen, S.E., eds., 2016, Crustal Permeability:  Chichester, AGU/Wiley Blackwell, 451 p.

Gleeson, T., and Ingebritsen, S.E., 2016, Introduction, Chapter 1 in Gleeson, T., and Ingebritsen, S.E., eds., Crustal Permeability:  Chichester, AGU/Wiley Blackwell, p. 1-5.

Gleeson, T., and Ingebritsen, S.E., 2016, The physics of permeability, Chapter 3 in Gleeson, T., and Ingebritsen, S.E., eds., Crustal Permeability:  Chichester, AGU/Wiley Blackwell, p. 15.

Gleeson, T., and Ingebritsen, S.E., 2016, Static permeability, Chapter 9 in Gleeson, T., and Ingebritsen, S.E., eds., Crustal Permeability:  Chichester, AGU/Wiley Blackwell, p. 85-86.

Gleeson, T., and Ingebritsen, S.E., 2016, Dynamic permeability, Chapter 16 in Gleeson, T., and Ingebritsen, S.E., eds., Crustal Permeability:  Chichester, AGU/Wiley Blackwell, p. 191-192.

Taron, J., Ingebritsen, S.E, Hickman, S., and Williams, C., 2016, Dynamics of permeability evolution in stimulated geothermal reservoirs:  Chapter 28 in Gleeson, T., and Ingebritsen, S.E., eds., Crustal Permeability:  Chichester, AGU/Wiley Blackwell, p. 363-372.

Gleeson, T., and Ingebritsen, S.E., 2016, Towards systematic characterization, Chapter 30 in Gleeson, T., and Ingebritsen, S.E., eds., Crustal Permeability:  Chichester, AGU/Wiley Blackwell, p. 395-397.

Burns, E.R., Ingebritsen, S.E., Manga, M., and Williams, C.F., 2016, Evaluating geothermal and hydrogeologic controls on regional groundwater temperature distributions:  Water Resources Research, v. 52, p. 1328-1344, doi:10.1002/2015WR018204.

Ingebritsen, S.E., Bergfeld, D., Clor, L.E., and Evans, W.C., 2016, The Lassen hydrothermal system:  American Mineralogist, v. 101, p. 343-354, doi:10.2138/am-2015-5456.

Ingebritsen, S.E., Shelly, D.R., Hsieh, P.A., Clor, L.E., Seward, P.H., and Evans, W.C., 2015, Hydrothermal response to a volcano-tectonic earthquake swarm, Lassen, California:  Geophysical Research Letters, v. 42, p. 9223-9230, doi:10.1002/2015GL065826.

Ingebritsen, S.E., 2015, Citation for Thomas Gleeson (Early Career Hydrologic Science Award):  Eos, v. 96, no. 20, p. 28.

Nordstrom, D.K., Hasselbach, L., Ingebritsen, S.E., Skorupa, D., McCleskey, R.B., and McDermott, T.R., 2015, An environmental survey of Serpentine Hot Springs – Geology, hydrology, geochemistry, and microbiology:  National Park Service Natural Resource Report NPS/BELA/NRR-2015/1019, Published Report-2224027, xi + 88 p., https://irma.nps.gov/App/Reference/Profile/2224027/.

Dame, B.E., Solomon, D.K., Evans, W.C., and Ingebritsen, S.E., 2015, Developing a new, passive diffusion sampler suite to detect helium anomalies associated with volcanic unrest:  Bulletin of Volcanology, v. 77, no. 3, article 23, doi:10.1007/s00445-015-0912-4.

Ingebritsen, S.E., 2015, Citation for Paul A. Hsieh (Ambassador Award):  Eos, v. 96, no. 2, p. 17.

Ingebritsen, S.E., and Gleeson, T., 2015, Crustal permeability:  Introduction to the special issue:  Geofluids, v. 15, p. 1-10, doi:10.1111/gfl.12118.

Burns, E.R., Williams, C.F., Ingebritsen, S.E., Voss, C.I., Spane, F.A., and DeAngelo, J., 2015, Understanding heat and groundwater flow through continental flood basalt provinces:  Insights gained from alternative models of permeability/depth relationships for the Columbia Plateau, USA:  Geofluids, v. 15, p. 120-138, doi:10.1111/gfl.12095.  (Also published as Chapter 13 of T. Gleeson and S.E. Ingebritsen, eds., 2016, Crustal Permeability:  Chichester, AGU/Wiley Blackwell, p. 137-154.)

Fan, Y., Richard, S., Bristol, S., Ingebritsen, S.E., Moosdorf, N., Packman, A., Gleeson, T., Zaslavsky, I., Peckham, S., Murdoch, L., Feinen, M., Cardiff, M., Tarboton, D., Jones, N., Hooper, R., Arrigo, J., Gochis, D., Olson, J., and Wolock, D., 2015, DigitalCrust – A 4D data system of material properties for transforming research on crustal fluid flow:  Geofluids, v. 15, p. 372-379, doi:10.1111/gfl.12114.  (Also published as Chapter 2 of T. Gleeson and S.E. Ingebritsen, eds., 2016, Crustal Permeability:  Chichester, AGU/Wiley Blackwell, p. 6-12.)

Ingebritsen, S.E., and Galloway, D.L., 2014, Coastal subsidence and relative sea-level rise:  Environmental Research Letters, v. 9, 091002, doi:10.1088/1748-9326/9/9/091002.

Ingebritsen, S.E., and Manga, M., 2014, Earthquakes:  Hydrogeochemical precursors:  Nature Geoscience, v. 7, p. 697-698, doi:10.1038/ngeo2261.

Ingebritsen, S.E., Randolph-Flagg, N.G. Gelwick, K.D., Lundstrom, E.A., Crankshaw, I.M., Murveit, A.M., Schmidt, M.E., Bergfeld, D.,  Spicer, K.R., Tucker, D.S., Mariner, R.H., and Evans, W.C., 2014, Hydrothermal monitoring in a quiescent volcanic arc:  Cascade Range, northwestern United States:  Geofluids, v. 14, p. 326-346, doi:10.1111/gfl.12079.

Taron, J., Hickman, S., Ingebritsen, S.E, and Williams, C., 2014, Using a fully coupled, open-source THM simulator to examine the role of thermal stresses in shear stimulation of enhanced geothermal systems:  48th US Rock Mechanics / Geomechanics Symposium, Minneapolis, Minnesota, 1-4 June 2014, ARMA 14-7525, 10 p.

Old Faithful Science Review Panel (Foley, D., Fournier, R.O., Heasler, H.P., Hinckley, B., Ingebritsen, S.E., Lowenstern, J.B., and Susong, D.D.), 2014, Hydrogeology of the Old Faithful area, Yellowstone National Park, Wyoming, and its relevance to natural resources and infrastructure:  U.S. Geological Survey Open-File Report 2014-1058, 28 p.

Ingebritsen, S.E., Gelwick, K.D., Randolph-Flagg, N.G., Crankshaw, I.M., Lundstrom, E.A., McCulloch, C.L., Murveit, A.M., Newman, A.C., Mariner, R.H., Bergfeld, D., Tucker, D.S., Schmidt, M.E., Spicer, K.R., Mosbrucker, A., and Evans, W.C., 2014, Hydrothermal monitoring data from the Cascade Range, northwestern United States:  U.S. Geological Survey Data Set, doi:10.5066/F72N5088, http://water.usgs.gov/nrp/cascade-hydrothermal-monitoring/ .

Ingebritsen, S.E., 2013, Book review:  Geology of the Earthquake Source – A Volume in Honor of Rick Sibson:  Geofluids, v. 13, p. 95-97.

Ingebritsen, S.E., 2012, Modeling the formation of porphyry-copper ores:  Science, v. 338, p. 1,551-1,552.

Ingebritsen, S.E., 2012, Chair’s Corner:  The Hydrogeologist, Issue 77, p. 2, 7.

Ingebritsen, S.E., 2012, Chair’s Corner:  The Hydrogeologist, Issue 76, p. 2, 7.

Ingebritsen, S.E., and Appold, M.S., 2012, Invited paper:  The physical hydrogeology of ore deposits:  Economic Geology, v. 107, p. 559-584.

Manga, M., Beresnev., I., Brodsky, E.E., Elkhoury, J.E., Elsworth, D., Ingebritsen, S.E., Mays, D.C., and Wang, C.-Y., 2012, Changes in permeability caused by transient stresses:  Field observations, experiments, and mechanisms:  Reviews of Geophysics, v. 50, RG2004, doi:10.1029/2011RG0000382.

Ingebritsen, S.E., 2012, Chair’s Corner:  The Hydrogeologist, Issue 75, p. 2.

Gundersen, L.C.S., Belnap, J., Goldhaber, M., Goldstein, A., Haeussler, P.J., Ingebritsen, S.E., Jones, J.W., Plumlee, G.S., Thieler, E.R., Thompson, R.S., and Back, J.M., 2011, Geology for a changing world 2010-2020 — Implementing the U.S. Geological Survey science strategy:  U.S. Geological Survey Circular 1369, 68 p., http://pubs.usgs.gov/circ/circ1369.

Palguta, J., Williams, C.F., Ingebritsen, S.E., Hickman, S.H., and Sonnenthal, E., 2011, An approach to modeling coupled thermal-hydraulic-chemical processes in geothermal sytems:  Proceedings of the Thirty-Sixth Workshop on Geothermal Reservoir Engineering, Stanford University, Stanford Geothermal Program Technical Report SGP-TR-191, 14 p.

Ingebritsen, S.E., Worden, R., and Yardley, B., 2011, Biographical profile of incoming editor Mark Person:  Geofluids, v. 11, p. 1-2.

Ingebritsen, S.E., and Mariner, R.H., 2010, Hydrothermal heat discharge in the Cascade Range, northwestern United States:  Journal of Volcanology and Geothermal Research, v. 196, p. 208-218, doi:10.1016/j.volgeores.2010.07.023.

Fairley, J.P., Ingebritsen, S.E., and Podgorney, R.K., 2010, Challenges for modeling of enhanced geothermal systems:  Ground Water, v. 48, p.482-483.

Ingebritsen, S.E., and Manning, C.E., 2010, Permeability of the continental crust:  Dynamic variations inferred from seismicity and metamorphism:  Geofluids, v. 10, p. 193-205.  (Reprinted in Yardley, B., Manning, C., and Garven, G., eds., 2011, Frontiers in Geofluids:  Chichester, United Kingdom, Wiley-Blackwell, p. 193-205.)

Ingebritsen, S.E., 2010, Book review:  Geological Fluid Dynamics – Sub-surface Flow and Reactions:   American Journal of Science, v. 310, p. 128-129.

Ingebritsen, S.E., Geiger, S., Hurwitz, S., and Driesner, T., 2010, Numerical simulation of magmatic hydrothermal systems:  Reviews of Geophysics, v. 48, RG1002, doi:10.1029/2009RG000287.

Hutnak, M., Hurwitz, S., Ingebritsen, S.E., and Hsieh, P.A., 2009, Numerical models of caldera deformation:  Effects of multi-phase and multi-component hydrothermal fluid flow:  Journal of Geophysical Research, v. 114, B04411, doi:10.1029/2008JB006151.

Ingebritsen, S.E., 2009, Book review:  Tectonic Faults – Agents of Change on a Dynamic Earth:  Geofluids, v. 9, p.75-76.

Ingebritsen, S.E., Worden, R., and Yardley, B.W.D., 2009, Editorial:  Geofluids, v. 9, p.1.

Rojstaczer, S.A., Ingebritsen, S.E., and Hayba, D.O., 2008, Permeability of continental  crust influenced by internal and external forcing:  Geofluids, v. 8, p. 128-139.

Ingebritsen, S.E., Hurwitz, S., and Brodsky, E., 2008, Note from the Hubbert Quorum:  Geofluids, v. 8, p. 1-2.

Christiansen, L.B., Hurwitz, S., and Ingebritsen, S.E., 2007, Annual modulation of seismicity along the San Andreas Fault near Parkfield, CA:  Geophysical Research Letters, v. 34, L04306, doi:10.1029/2006GL028634.

Yardley, B., Ingebritsen, S.E., and Worden, R., 2007, New developments at Geofluids:  Geofluids, v. 7, p. 1.

Ingebritsen, S.E., Sanford, W.E., and Neuzil, C.E., 2006, Groundwater in Geologic Processes, 2nd edition:  Cambridge, Cambridge University Press, 536 p.

Christiansen, L.B., Hurwitz, S., Saar, M.O., Hsieh, P.A., and Ingebritsen, S.E., 2005, Seasonal seismicity at western United States volcanoes:  Earth and Planetary Science Letters, v. 240, p. 307-321.

Kipp, K.L., Hsieh, P.A., Hayba, D.O., and Ingebritsen, S.E., 2005, HYDROTHERM:  A simulator of two-phase ground-water flow and heat transport:  International Ground Water Modeling Center Newsletter, v. 23, no. 3, p. 3.

Hogeweg, N., Keith, T.E.C., Colvard, E.M., and Ingebritsen, S.E., 2005, Ongoing hydrothermal heat loss from the Valley of 10,000 Smokes, Alaska:  Journal of Volcanology and Geothermal Research, v. 143, p. 279-291.

Evans, W.C., van Soest, M.C., Mariner, R.H., Hurwitz, S., Ingebritsen, S.E., Wicks, C.W., Jr., and Schmidt, M.E., 2004, Magmatic intrusion west of Three Sisters, central Oregon, USA:  The perspective from spring geochemistry:  Geology, v. 32, p. 69-72.

Hurwitz, S., Kipp, K.L., Ingebritsen, S.E., and Reid, M.E., 2003, Groundwater flow, heat transport, and water-table position within volcanic edifices:  Implications for volcanic processes in the Cascade Range:  Journal of Geophysical Research, v. 108, 2557, doi:10.1029/2003JB002565.

Galloway, D.L., Coplin, L.S., and Ingebritsen, S.E., 2003, Effects of land subsidence in the greater Houston area in Agthe, D.E., Billings, R.B., and Buras, N., eds., Managing Urban Water Supply:  Dordrecht, Kluwer Academic Publishers, p. 187-203.

Rojstaczer, S.A., Galloway, D.L., Ingebritsen, S.E., and Rubin, D.R., 2003, Variability in geyser eruptive timing and its causes:  Yellowstone National Park:  Geophysical Research Letters, v. 30, 1953, doi:10.1029/2003GL017853.

Hurwitz, S., and Ingebritsen, S.E., 2003, Good news or bad?:  New study of temperature inversions in NSF deep geothermal well at Kilauea volcano:  Geothermal Resources Council Bulletin, v. 32, p. 111-115.

Hurwitz, S., Goff, F., Janik, C.J., Evans, W.C., Counce, D.A., Sorey, M.L., and Ingebritsen, S.E., 2003, Mixing of magmatic volatiles with groundwater and interaction with basalt on the summit of Kilauea Volcano, Hawaii:  Journal of Geophysical Research, v. 108, 2028, doi:10.1029/2001JB001594.

Hurwitz, S., Ingebritsen, S.E., and Sorey, M.L., 2002, Episodic thermal perturbations associated with groundwater flow:  An example from Kilauea Volcano, Hawaii:  Journal of Geophysical Research, v. 107, 2297, doi:10.1029/2001JB001654.

Ingebritsen, S.E., and Manning, C.E., 2002, Diffuse fluid flux through orogenic belts:  Implications for the world ocean:  Proceedings of the National Academy of Sciences USA, v. 99, p. 9,113-9,116.  (Reprinted in Journal of Geochemical Exploration, v. 78-79, p. 1-5 and in Proceedings of the 2nd International Workshop on Water Dynamics, Sendai, Japan, November 11-12, 2004, p. 39-49.)

Ingebritsen, S.E., 2002, Report from the 2001 Birdsall-Dreiss Distinguished Lecturer:  The Hydrogeologist, Spring 2002 (issue no. 56), p. 7, 15, http://gsahydrodiv.unl.edu/gsahydrodiv/index.htm.

Wicks, C.W., Jr., Dzurisin, D., Ingebritsen, S.E., Thatcher, W., Lu, Z., and Iverson, J., 2002, Magmatic activity beneath the quiescent Three Sisters volcanic center, central Oregon Cascade Range, Oregon:  Geophysical Research Letters, v. 29, 1122, doi:10.1029/2001GL014205.

Evans, W.C., Mariner, R.H., Ingebritsen, S.E., Kennedy, B.M., van Soest, M.C., and Huebner, M.A., 2002, Report of hydrologic investigations in the Three Sisters area of central Oregon, summer 2001:  U.S. Geological Survey Water-Resources Investigations Report 02-4061, 13 p., http://water.usgs.gov/pubs/wri/wri024061.

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.

Galloway, D.L., Jones, D.R., and Ingebritsen, S.E., 2000, Land subsidence in the United States:  U.S. Geological Survey Fact Sheet 165-00.

Galloway, D.L., Jones, D.R., and Ingebritsen, S.E., 2000, Measuring land subsidence from space:  U.S. Geological Survey Fact Sheet 051-00.

Ingebritsen, S.E., Ikehara, M.E., Galloway, D.L., and Jones, D.R., 2000, Delta subsidence in California -- The sinking heart of the state:  U.S. Geological Survey Fact Sheet 005-00.

Galloway, D.L., Jones, D.R., and Ingebritsen, S.E., eds., 1999, Land subsidence in the United States:  U.S. Geological Survey Circular 1182, 175 p.

Ingebritsen, S.E., and Jones, D.R., 1999, Santa Clara Valley, California -- A case of arrested subsidence in Galloway, D.L., Jones, D.R., and Ingebritsen, S.E., eds., Land subsidence in the United States:  U.S. Geological Survey Circular 1182, p. 15-22.

Ingebritsen, S.E., and Ikehara, M.E., 1999, Sacramento-San Joaquin Delta -- The sinking heart of the state in Galloway, D.L., Jones, D.R., and Ingebritsen, S.E., eds., Land subsidence in the United States:  U.S. Geological Survey Circular 1182, p. 83-94.

Ingebritsen, S.E., McVoy, Christopher, Glaz, B., and Park, Winifred, 1999, Florida Everglades -- Subsidence threatens agriculture and complicates ecosystem restoration in Galloway, D.L., Jones, D.R., and Ingebritsen, S.E., eds., Land subsidence in the United States:  U.S. Geological Survey Circular 1182, p. 95-106.

Galloway, D.L., Ingebritsen, S.E., Riley, F.S., Ikehara, M.E., and Carpenter, M.C., 1999, The role of science in Galloway, D.L., Jones, D.R., and Ingebritsen, S.E., eds., Land subsidence in the United States:  U.S. Geological Survey Circular 1182, p. 141-158.

Ingebritsen, S.E., and Manning, C.E., 1999, Geological implications of a permeability-depth curve for the continental crust:  Geology, v. 27, p. 1,107-1,110.

Manning, C.E., and Ingebritsen, S.E., 1999, Permeability of the continental crust:  The implications of geothermal data and metamorphic systems:  Reviews of Geophysics, v. 37, p. 127-150.

Galloway, D.L., Hudnut, K.W., Ingebritsen, S.E., Phillips, S.P., Peltzer, G., Rogez, F., and Rosen, P.A., 1998, Detection of aquifer-system compaction and land subsidence using interferometric synthetic aperture radar, Antelope Valley, Mojave Desert, California:  Water Resources Research, v. 34, p. 2,573-2,585.

Ingebritsen, S.E., and Sanford, W.E., 1998, Groundwater in Geologic Processes:  New York, Cambridge University Press, 341 p. (First paperback edition 1999)

Hayba, D.O., and Ingebritsen, S.E., 1997, Multiphase groundwater flow near cooling plutons: Journal of Geophysical Research, v. 102, p. 12,235-12,252.

Scholl, M.A., Ingebritsen, S.E., Janik, C.J., and Kauahikaua, J.P., 1996, Use of precipitation and groundwater isotopes to interpret regional hydrology on a tropical volcanic island:  Kilauea volcano area, Hawaii:  Water Resources Research, v. 32, p. 3,525-3,537 (Reprinted in the Water Resources Journal of the United Nations ESCAP Secretariat, March 1998, p. 48-63.)

Ingebritsen, S.E., and Rojstaczer, S.A., 1996, Geyser periodicity and the response of geysers to deformation:  Journal of Geophysical Research, v. 101, p. 21,891-21,905.

Sherrod, D.R., Ingebritsen, S.E., Curless, J.M., Keith, T.E.C., Diaz, N.M., Deroo, T.G., and Hurlocker, S.L., 1996, Water, rocks, and woods - A field excursion to examine the geology, hydrology, and geothermal resources in the Clackamas, North Santiam, and McKenzie River drainages, Cascade Range, Oregon:  Oregon Geology, v. 58, p. 103-124.

Ingebritsen, S.E., Scholl, M.A., and Sherrod, D.R., 1996, Reply to comment by D.D. Blackwell and G.R. Priest on "Heat flow from four new research drill holes in the Western Cascades, Oregon, U.S.A.": Geothermics, v. 25, p. 715-724.

Ingebritsen, S.E., Sherrod, D.R., and Mariner, R.H., 1996, Reply to comment by D.D. Blackwell and G.R. Priest on "Rates and patterns of groundwater flow in the Cascade Range volcanic arc, and the effect on subsurface temperatures":  Journal of Geophysical Research, v. 101, p. 17,569-17,576.

Scholl, M.A., Ingebritsen, S.E., Janik, C.J., and Kauahikaua, J.P., 1995, An isotope hydrology study of the Kilauea volcano area, Hawaii:  U.S. Geological Survey Water-Resources Investigations Report 95-4213, 44 p.

Sorey, M.L., and Ingebritsen, S.E., 1995, Heat and mass flow from thermal areas in and adjacent to Lassen Volcanic National Park, California, U.S.A.:  Proceedings of the World Geothermal Congress, Florence, Italy, p. 751-755.

Scholl, M.A., and Ingebritsen, S.E., 1995, Total and non-seasalt sulfate and chloride measured in bulk precipitation samples from the Kilauea volcano area, Hawaii:  U.S. Geological Survey Water-Resources Investigations Report 95-4001, 32 p.

Sorey, M.L., Colvard, E.M., and Ingebritsen, S.E., 1994, Measurements of thermal-water discharge outside Lassen Volcanic National Park, California, 1983-1994:  U.S. Geological Survey Water-Resources Investigations Report 94-4180-B, 45 p.

Ingebritsen, S.E., and Hayba, D.O., 1994, Fluid flow and heat transport near the critical point of H20:  Geophysical Research Letters, v. 21, p. 2,199-2,203.

Hayba, D.O., and Ingebritsen, S.E., 1994, The computer model HYDROTHERM, a three-dimensional finite-difference model to simulate ground-water flow and heat transport in the temperature range of 0 to 1,200oC:  U.S. Geological Survey Water-Resources Investigations Report 94-4045, 85 p.

Ingebritsen, S.E., Mariner, R.H., and Sherrod, D.R., 1994, Hydrothermal systems of the Cascade Range, north-central Oregon:  U.S. Geological Survey Professional Paper 1044-L, 86 p., 2 plates.

Hayba, D.O., and Ingebritsen, S.E., 1994, Flow near the critical point: Examination of some pressure-enthalpy paths:  Proceedings of the Nineteenth Workshop on Geothermal Reservoir Engineering, Stanford University, p. 83-89.

Ingebritsen, S.E., and Rojstaczer, S.A., 1993, Controls on geyser periodicity:  Science, v. 262, p. 889-892.

Manning, C.E., Ingebritsen, S.E., and Bird, D.K., 1993, Missing mineral zones in contact metamorphosed basalts:  American Journal of Science, v. 293, p. 894-938.

Scholl, M.A., Janik, C.J., Ingebritsen, S.E., Kauahikaua, J.P., and Trusdell, F.A., 1993, Preliminary results from an isotope hydrology study of the Kilauea volcano area, Hawaii:  Geothermal Resources Council Transactions, v. 17, p. 187-193.

Ingebritsen, S.E., and Scholl, M.A., 1993, Annotated bibliography, hydrogeology of Kilauea volcano:  U.S. Geological Survey Open-File Report 93-551-D, 30 p.

Ingebritsen, S.E., and Scholl, M.A., 1993, The hydrogeology of Kilauea volcano:  Geothermics, v. 22, p. 255-270.

Ingebritsen, S.E., Scholl, M.A., and Sherrod, D.R., 1993, Heat flow from four new research drill holes in the Western Cascades, Oregon, U.S.A.: Geothermics, v. 22, p. 151-163.

Ingebritsen, S.E., Christenson, B.W., Forster, C.B., Heiken, G.H., and Manning, C.E., 1993, Fluid-volcano interactions (meeting report):  GSA Today, v. 3, p. 123; Bulletin of Volcanology, v. 55, p. 542-543; WOVO News, v. 1, no. 3, p. 8-9.

Scholl, M.A., Ingebritsen, S.E., and Essaid, H.I., 1993, Comment on "Consequences of phase separation on the distribution of hydrothermal fluids at ASHES vent field, Axial Volcano, Juan de Fuca Ridge" by Christopher G. Fox:  Journal of Geophysical Research, v. 98, p. 1,813-1,815.

Ingebritsen, S.E., Sherrod, D.R., and Mariner, R.H., 1992, Rates and patterns of groundwater flow in the Cascade Range volcanic arc, and the effect on subsurface temperatures:  Journal of Geophysical Research, v. 97, p. 4,599-4,627.

Forster, C.B., and Ingebritsen, S.E., 1991, How fluids affect volcanoes (meeting report):  Eos Transactions American Geophysical Union, v. 72, p. 395-396.

Ingebritsen, S.E., Mariner, R.H., and Sherrod, D.R., 1991, Hydrothermal systems of the Cascade Range, north-central Oregon:  U.S. Geological Survey Open-File Report 91-69, 217 p.  (Superceded by U.S. Geological Survey Professional Paper 1044-L.)

Paulson, K.M., and Ingebritsen, S.E., 1991, Sodium and chloride data from selected streams in the Lassen area, north-central California, and their relation to thermal-fluid discharge from the Lassen hydrothermal system:  U.S. Geological Survey Water-Resources Investigations Report 90-4201, 29 p.

Bredehoeft, J.D., and Ingebritsen, S.E., 1990, Degassing of carbon dioxide as a possible source of high pore pressures in the crust in Bredehoeft, J.D., and Norton, D.L., eds., The Role of Fluids in Crustal Processes: Washington, D.C., National Academy Press, p. 158-164.

Ingebritsen, S.E., and Paulson, K.M., 1990, Numerical simulation of hydrothermal circulation in the Cascade Range, north-central Oregon: Geothermal Resources Council Transactions, v. 14, p. 691-698.

Ingebritsen, S.E., Sherrod, D.R., and Mariner, R.H., 1989, Heat flow and hydrothermal circulation in the Cascade Range, north-central Oregon in Muffler, L.J.P., Weaver, C.S., and Blackwell, D.D., eds., Proceedings of workshop XLIV:  Geological, geophysical, and tectonic setting of the Cascade Range:  U.S. Geological Survey Open-File Report 89-178, p. 122-141.

Ingebritsen, S.E., Sherrod, D.R., and Mariner, R.H., 1989, Heat flow and hydrothermal circulation in the Cascade Range, north-central Oregon: Science, v. 243, p. 1,458-1,462.

Ingebritsen, S.E., Mariner, R.H., Cassidy, D.E., Shepherd, L.D., Presser, T.S., Pringle, M.K.W., and White, L.D., 1988, Heat-flow and water- chemistry data from the Cascade Range and adjacent areas in north-central Oregon:  U.S. Geological Survey Open-File Report 88-702, 205 p.

Ingebritsen, S.E., and Sorey, M.L., 1988, Vapor-dominated zones within hydrothermal systems:  Evolution and natural state:  Journal of Geophysical Research, v. 93, p. 13,635-13,655.

Sammel, E.A., Ingebritsen, S.E., and Mariner, R.H., 1988, The hydrothermal system at Newberry Volcano, Oregon:  Journal of Geophysical Research, v. 93, p. 10,149-10,162.

Ingebritsen, S.E., 1987, Vapor-dominated zones within hydrothermal convection systems:  Proceedings of the Twelfth Workshop on Geothermal Reservoir Engineering, Stanford University, p. 291-296.

Ingebritsen, S.E., and Sorey, M.L., 1987, Conceptual models for the Lassen hydrothermal system:  Geothermal Resources Council Bulletin, v. 16, no. 2, p. 3-9.

Ingebritsen, S.E., 1986, Vapor-dominated zones within hydrothermal convection systems:  Evolution and natural state:  Ph.D. thesis, Stanford University, 179 p.

Olmsted, F.H., Welch, A.H., and Ingebritsen, S.E., 1986, Shallow subsurface temperature surveys in the Basin and Range province, U.S.A.  I. Review and evaluation:  Geothermics, v. 15, p. 251-265.

Olmsted, F.H., and Ingebritsen, S.E., 1986, Shallow subsurface temperature surveys in the Basin and Range province  II. Ground temperatures in the Upsal Hogback geothermal area, west-central Nevada, U.S.A.: Geothermics, v. 15, p. 267-275.

Switzer, Paul, and Ingebritsen, S.E., 1986, Ordering of time-difference data from multispectral imagery, Remote Sensing of Environment, v. 20, p. 85-94.

Ingebritsen, S.E., Carothers, W.W., Mariner, R.H., Gudmundsson, J.S., and Sammel, E.A., 1986, Flow testing of the Newberry 2 research drillhole, Newberry Volcano, Oregon:  U.S. Geological Survey Water-Resources Investigations Report 86-4133, 23 p.

Ingebritsen, S.E., 1986, The evolution and natural state of large-scale vapor-dominated zones:  Proceedings of the Eleventh Workshop on Geothermal Reservoir Engineering, Stanford University, p. 117-126.

Ingebritsen, S.E., and Sorey, M.L., 1985, A quantitative analysis of the Lassen hydrothermal system, north-central California:  Water Resources Research, v. 21, p. 853-868.

Ingebritsen, S.E., and Lyon, R.J.P., 1985, Principal components analysis of multitemporal image pairs: Int'l. Journal of Remote Sensing, v. 6, p. 687-696.

Ingebritsen, S.E., and Switzer, Paul, 1984, Ordering of time-difference information from repeated spatial imagery:  Proceedings of the Ninth Wm. T. Pecora Memorial Remote Sensing Symposium, Sioux Falls, p. 46-50 (also available as Switzer and Ingebritsen, Tech. Rept. No. 7, Dept. of Statistics, Stanford University, 1984).

Sorey, M.L., and Ingebritsen, S.E., 1984, Quantitative analysis of the hydrothermal system in Lassen Volcanic National Park and Lassen KGRA: U.S. Geological Survey Water-Resources Investigations Report 84-4278, 80 p.

Olmsted, F.H., Welch, A.H., VanDenburgh, A.S., and Ingebritsen, S.E., 1984, Geohydrology, aqueous geochemistry, and thermal regime of the Soda Lakes and Upsal Hogback geothermal areas, Churchill County, Nevada: U.S. Geological Survey Water-Resources Investigations Report 84-4054, 166 p., 2 plates.

Sorey, M.L., and Ingebritsen, S.E., 1983, Evolution of liquid-dominated hydrothermal systems with parasitic vapor-dominated zones:  Proceedings of the Fifth New Zealand Geothermal Workshop, University of Auckland Geothermal Institute, p. 17-22.

Sorey, M.L., and Ingebritsen, S.E., 1983, Numerical simulations of the hydrothermal system at Lassen Volcanic National Park:  Proceedings of the Ninth Workshop on Geothermal Reservoir Engineering, Stanford University, p. 365-372.

Ingebritsen, S.E., 1983, Evolution of the geothermal system in the Lassen Volcanic National Park area:  M.S. thesis, Stanford University, 90 p.