Eileen Hemphill-Haley

Research Associate


Specialty Area

Diatom Micropaleontology, Paleoclimatology, Paleoecology as applied to environmental studies, paleoseismology and neotectonics


Ph.D., Earth Sciences, 1992, U.C. Santa Cruz
B.S., Geology, 1982, Humboldt State University


  Hemphill-Haley, E., 1992, Application of diatom paleoecology to interpretations of Holocene relative sea-level change and coseismic subsidence in southwestern Washington:  Ph.D. dissertation, University of California at Santa Cruz, 321 p. 

Hemphill-Haley, E., 1995, Diatom evidence for earthquake-induced subsidence and tsunami 300 years ago in southern coastal Washington:  Geological Society of America Bulletin, v. 107, no. 3, p. 367-378.

Hemphill-Haley, E., 1995, Intertidal diatoms from Willapa Bay, Washington:  Application to studies of small-scale sea-level changes:  Northwest Science, v. 69, no. 1, p. 29-45.

Hemphill-Haley, E., 1996, Diatoms as an aid in identifying late Holocene tsunami deposits.: The Holocene, v. 6, no. 4, p. 439-448.

Hemphill-Haley, E., and Fourtanier, Elisabeth, 1995, A diatom record spanning 114,000 years from Site 893, Santa Barbara Basin.  Proceedings of the Ocean Drilling Program, Scientific Results, v. 146 (Pt. 2), College Station, TX:  233-249.

Hemphill-Haley, E., and Gardner, J.V., 1994, Revised ages for laminated (varved) deposits and a Holocene-marker diatom from the northern California continental slope:  Quaternary Research, v. 41, p. 131-135.

Hemphill-Haley, E., and Mahood, A., 1997, Endictya hendeyisp. nov., a new coastal diatom from North America: Diatom Research, v. 12, no. 1, p. 35-42.

Anderson, R.Y., Gardner, J.V., and Hemphill-Haley, E., 1989, Variability of the late Pleistocene oxygen-minimum zone off northern California, in  D.W. Peterson ed., Aspects of Climate Variability in the Pacific and the Western Americas: Geophysical Monograph 55, American Geophysical Union, Washington, p. 75- 92.

Anderson, R.Y., Hemphill-Haley, E.,  and Gardner, J.V., 1987, Persistent Late Pleistocene-Holocene seasonal upwelling and varves off the coast of California:  Quaternary Research, v. 28, p. 307-313.

Atwater, B.F., and Hemphill-Haley, E.,1997, Recurrence Intervals for Great Earthquakes of the Past 3500 Years at Northeastern Willapa Bay, Washington:  USGS Professional Paper 1576, 108 p.

Atwater, B.F., Nelson, A.R., Clague, J.J., Carver, G.C., Yamaguchi, D.K., Bobrowsky, P.T., Bourgeois, J., Darienzo, M.E., Grant, W.E., Hemphill-Haley, E., Kelsey, H.M., Jacoby, G.C., Nishenko, S.P., Palmer, S.P., Peterson, C.D., and Reinhart, M.A., 1995, Summary of coastal geologic evidence for past great earthquakes at the Cascadia subduction zone:  Earthquake Spectra, v.11, no. 1, p. 1-18.

Bucknam, R.C., Hemphill-Haley, E., and Leopold, E.B., 1992,  Abrupt uplift within the past 1700 years at southern Puget Sound, Washington:  Science, v. 258, no. 5088, p. 1611-1614.

Bucknam, R.C., Leopold, E.B., Hemphill-Haley, E., Ekblaw, D.E., Atwater, B.F.,  Benson, B.E., and Phipps, J.B., 1994, Holocene tectonics in western Washington, in  Swanson, D.A., and Haugerud, R.A., eds., Geologic field trips in the Pacific  Northwest: 1994 Geological Society of America Annual Meeting, Seattle, Washington,  Department of Geological Sciences, University of Washington, p. 2C-1--2C-15.

Cole, S.C., Atwater, B.F., McCutcheon, P.T., Stein, J.K., and Hemphill-Haley, E., 1996, Earthquake-induced submergence and burial of archaeological sites at the Cascadia subduction zone:  Geoarcheology, 11: 165-172.

Dean, W.E., Gardner, J.V., and Hemphill-Haley, E., 1989, Changes in redox conditions in deep-sea sediments of the subarctic North Pacific Ocean: Possible evidence for the presence of North Pacific Deep Water: Paleoceanography, v. 4, no. 6, p.639-653.

Kelsey, H.M., Witter R.C., and Hemphill-Haley, E., 1996, Relative sea level changes, tsunamis and sever shaking recorded in the Sixes River marsh and estuary, south coastal Oregon, during the last 6,000 years.  National Earthquake Hazards Reduction Program (NEHRP) Final Technical Report 1434-93-G-2321: 46 p.

Kelsey, H.M., Witter, R.C. and Hemphill-Haley, E., 1998, Response of a small estuary in Oregon to the subductin earthquake deformation cycle:  Geology, v. 23, no. 3, p. 231-234.

Witter, R.C., Kelsey, H.M., and Hemphill-Haley, E,, 2001, Pacific storms, El Niño and tsunamis: Competing mechanisms for sand deposition in a coastal marsh, Euchre Creek, Oregon: Journal of Coastal Research, v. 17, no. 3, p. 563-583.

Kelsey, H.M., Witter, R.C., and Hemphill-Haley, E., 2002, Plate-boundary earthquakes and tsunamis of the past 5500 yr, Sixes River Estuary, southern Oregon:  Geological Society of America Bulletin, v. 114, no. 3, p. 298-314.

Witter, R.C., Kelsey, H.M., and Hemphill-Haley, E., 2003, Great Cascadia earthquakes of the past 6,700 years, Coquille River Estuary, southern coastal Oregon. Geological Society of America Bulletin, in press.


Hemphill-Haley, E., 1993a, Occurrences of recent and Holocene intertidal diatoms (Bacillariophyta) in northern Willapa Bay, Washington:  U.S. Geological Survey Open-File Report 93-284, 94 p.

Hemphill-Haley, E., 1993b, Taxonomy of recent and fossil (Holocene) diatoms (Bacillariophyta) from northern Willapa Bay, Washington:  U.S. Geological Survey Open-File Report 93-289, 151 p.

Hemphill-Haley, E., 1993c, Distribution and taxonomy of late Quaternary diatoms from gravity cores L13-81-G117, L13-81-G138, L13-81-G145, and TT197-G330, northern California continental slope:  U.S. Geological Survey Open-File Report 93-340, 108 p.

Hemphill-Haley, E., 1994, Marine diatom studies for the Correlation of the Marine and Terrestrial Records of Climate (CMTR) Project:  in Adam, D.P., Bradbury, J.P., Dean, W.E., Gardner, J.V., and Sarna-Wojcicki, A.M., 1995, Report of 1994 workshop on the correlation of marine and terrestrial records of climate changes in the western United States.  U.S. Geological Survey Open-File Rept. 95-34, p. 90-92.

Hemphill-Haley, E., and Lewis, R.C., 1995, Distribution and taxonomy of diatoms (Bacillariophyta) in surface samples and a two-meter core from Winslow Marsh, Bainbridge Island, Washington:  U.S. Geological Survey Open-File Report 95-833, 103 p.

Atwater, B.F., and Hemphill-Haley, E., 1996, Preliminary estimates of recurrence intervals for great earthquakes of the past 3500 years at northeastern Willapa Bay, Washington.  U.S. Geological Survey Open-File Report 96-001: 88 p.

Eileen Hemphill-Haley
(707) 826-3116
Van Matre Hall, Room 110B