Patrick Hart
Geophysicist Emeritus with the USGS Pacific Coastal and Marine Science Center
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Geophysical surveys of the San Andreas and Crystal Springs Reservoir system, including seismic-reflection profiles and swath bathymetry, San Mateo County, California
This report describes geophysical data acquired by the U.S. Geological Survey (USGS) in San Andreas Reservoir and Upper and Lower Crystal Springs Reservoirs, San Mateo County, California, as part of an effort to refine knowledge of the location of traces of the San Andreas Fault within the reservoir system and to provide improved reservoir bathymetry for estimates of reservoir water volume. The su
Authors
David P. Finlayson, Peter J. Triezenberg, Patrick E. Hart
Knemidokoptic mange in Hawai`i `Amakihi (Hemignathus virens) on the island of Hawai`i
Lesions resembling knemidokoptic mange on the feet and tarsometatarsi of two Hawai`i `Amakihi (Hemignathus virens) were observed while the researchers were mist-netting wild passerines at Manuka Natural Area Reserve on the island of Hawai`i between 14 June 2007 and 19 June 2007. During subsequent mist-netting from September 2007 through February 2008, we found 26% (7/27) of the Hawai`i `Amakihi ca
Authors
Jacqueline Gaudioso, Dennis Lapointe, Patrick E. Hart
High-Resolution Seismic-Reflection and Marine Magnetic Data Along the Hosgri Fault Zone, Central California
The U.S. Geological Survey (USGS) collected high-resolution shallow seismic-reflection and marine magnetic data in June 2008 in the offshore areas between the towns of Cayucos and Pismo Beach, Calif., from the nearshore (~6-m depth) to just west of the Hosgri Fault Zone (~200-m depth). These data are in support of the California State Waters Mapping Program and the Cooperative Research and Develop
Authors
Ray W. Sliter, Peter J. Triezenberg, Patrick E. Hart, Janet T. Watt, Samuel Y. Johnson, Daniel S. Scheirer
Late Pleistocene to Holocene sedimentation and hydrocarbon seeps on the continental shelf of a steep, tectonically active margin, southern California, USA
Small, steep, uplifting coastal watersheds are prolific sediment producers that contribute significantly to the global marine sediment budget. This study illustrates how sedimentation evolves in one such system where the continental shelf is largely sediment-starved, with most terrestrial sediment bypassing the shelf in favor of deposition in deeper basins. The Santa Barbara-Ventura coast of south
Authors
Amy E. Draut, Patrick E. Hart, T.D. Lorenson, Holly F. Ryan, Florence L. Wong, Ray W. Sliter, James E. Conrad
High-resolution chirp and mini-sparker seismic-reflection data from the southern California continental shelf — Gaviota to Mugu Canyon
The U.S. Geological Survey (USGS) collected high-resolution shallow seismic-reflection data in September, 2007, and June-July, 2008, from the continental shelf offshore of southern California between Gaviota and Mugu Canyon, in support of the California's State Waters Mapping Program.
Data were acquired using SIG 2mille mini-sparker and Edgetech chirp 512 instruments aboard the R/V Zephyr (Sep
Authors
Ray W. Sliter, Peter J. Triezenberg, Patrick E. Hart, Amy E. Draut, William R. Normark, James E. Conrad
High-resolution chirp seismic reflection data acquired from the Cap de Creus shelf and canyon area, Gulf of Lions, Spain in 2004
Seismic reflection data were collected from the Cap de Creus shelf and canyon in the southwest portion of the Gulf of Lions in October 2004. The data were acquired using the U.S. Geological Survey`s (USGS) high-resolution Edgetech CHIRP 512i seismic reflection system aboard the R/V Oceanus. Data from the shipboard 3.5 kHz echosounder were also collected but are not presented here. The seismic refl
Authors
Eric E. Grossman, Patrick E. Hart, Michael E. Field, Peter Triezenberg
GIS of selected geophysical and core data in the northern Gulf of Mexico continental slope collected by the U.S. Geological Survey
Since 1982 the U. S. Geological Survey (USGS) has collected a large amount of surficial and shallow subsurface geologic information in the deep-water parts of the US EEZ in the northern Gulf of Mexico. These data include digital sidescan sonar imagery, digital seismic-reflection data, and descriptions and analyses of piston and gravity cores. The data were collected during several different projec
Authors
David C. Twichell, VeeAnn A. Cross, Valerie F. Paskevich, Deborah R. Hutchinson, William J. Winters, Patrick E. Hart
High-resolution multichannel seismic-reflection data acquired in the northern Gulf of Mexico, 2003
No abstract available.
Authors
Patrick E. Hart, Deborah R. Hutchinson, Myung Lee
Seismic reflection and refraction data acquired in Canada Basin, Northwind Ridge and Northwind Basin, Arctic Ocean in 1988, 1992 and 1993
Seismic reflection and refraction data were collected in generally ice-covered waters of the Canada Basin and the eastern part of the Chukchi Continental Borderland of the Amerasia Basin, Arctic Ocean, during the late summers of 1988, 1992, and 1993. The data were acquired from a Polar class icebreaker, the U.S. Coast Guard Cutter Polar Star, using a seismic reflection system designed by the U.S.
Authors
Arthur Grantz, Patrick E. Hart, Steven D. May
Cruise Report for G1-03-GM, USGS Gas Hydrates Cruise, R/V Gyre, 1-14 May 2003, Northern Gulf of Mexico
This report gives a summary of the field program and instrumentation used on the R/V Gyre in the Gulf of Mexico in May, 2003, to collect multichannel seismic data in support of USGS and Department of Energy gas hydrate studies. Tabulated statistics, metadata, figures and maps are included to show the breadth of data collected and preliminary interpretations made during the field program. Geophysic
Authors
Deborah R. Hutchinson, Patrick E. Hart
High-Resolution Multichannel Seismic-Reflection Data Acquired in the Northern Gulf of Mexico, 1998-99
During June 1998 and April 1999, the U.S. Geological Survey (USGS) conducted two research cruises in the northern Gulf of Mexico to acquire high-resolution seismic reflection data across the upper and middle continental slope as part of an investigation of the seismic character, distribution, and potential effects of naturally-occurring marine gas hydrates and related free gas within the gas hydra
Authors
Patrick E. Hart, Alan K. Cooper, David C. Twichell, Myung Lee, Warren Agena
Reprocessing of multi-channel seismic-reflection data collected in the Chukchi Sea
Contained on this set of two CD-ROMs are stacked and migrated multi-channel seismic-reflection data for 44 lines recorded in the Chukchi Sea, northern Alaska, by the United States Geological Survey in 1977, 1978, and 1980. All data were reprocessed by the USGS in 2000 using updated methods. The resulting final data have both increased temporal and spatial resolution thus providing improved interpr
Authors
Warren F. Agena, Myung W. Lee, Patrick E. Hart
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Geophysical surveys of the San Andreas and Crystal Springs Reservoir system, including seismic-reflection profiles and swath bathymetry, San Mateo County, California
This report describes geophysical data acquired by the U.S. Geological Survey (USGS) in San Andreas Reservoir and Upper and Lower Crystal Springs Reservoirs, San Mateo County, California, as part of an effort to refine knowledge of the location of traces of the San Andreas Fault within the reservoir system and to provide improved reservoir bathymetry for estimates of reservoir water volume. The suAuthorsDavid P. Finlayson, Peter J. Triezenberg, Patrick E. HartKnemidokoptic mange in Hawai`i `Amakihi (Hemignathus virens) on the island of Hawai`i
Lesions resembling knemidokoptic mange on the feet and tarsometatarsi of two Hawai`i `Amakihi (Hemignathus virens) were observed while the researchers were mist-netting wild passerines at Manuka Natural Area Reserve on the island of Hawai`i between 14 June 2007 and 19 June 2007. During subsequent mist-netting from September 2007 through February 2008, we found 26% (7/27) of the Hawai`i `Amakihi caAuthorsJacqueline Gaudioso, Dennis Lapointe, Patrick E. HartHigh-Resolution Seismic-Reflection and Marine Magnetic Data Along the Hosgri Fault Zone, Central California
The U.S. Geological Survey (USGS) collected high-resolution shallow seismic-reflection and marine magnetic data in June 2008 in the offshore areas between the towns of Cayucos and Pismo Beach, Calif., from the nearshore (~6-m depth) to just west of the Hosgri Fault Zone (~200-m depth). These data are in support of the California State Waters Mapping Program and the Cooperative Research and DevelopAuthorsRay W. Sliter, Peter J. Triezenberg, Patrick E. Hart, Janet T. Watt, Samuel Y. Johnson, Daniel S. ScheirerLate Pleistocene to Holocene sedimentation and hydrocarbon seeps on the continental shelf of a steep, tectonically active margin, southern California, USA
Small, steep, uplifting coastal watersheds are prolific sediment producers that contribute significantly to the global marine sediment budget. This study illustrates how sedimentation evolves in one such system where the continental shelf is largely sediment-starved, with most terrestrial sediment bypassing the shelf in favor of deposition in deeper basins. The Santa Barbara-Ventura coast of southAuthorsAmy E. Draut, Patrick E. Hart, T.D. Lorenson, Holly F. Ryan, Florence L. Wong, Ray W. Sliter, James E. ConradHigh-resolution chirp and mini-sparker seismic-reflection data from the southern California continental shelf — Gaviota to Mugu Canyon
The U.S. Geological Survey (USGS) collected high-resolution shallow seismic-reflection data in September, 2007, and June-July, 2008, from the continental shelf offshore of southern California between Gaviota and Mugu Canyon, in support of the California's State Waters Mapping Program. Data were acquired using SIG 2mille mini-sparker and Edgetech chirp 512 instruments aboard the R/V Zephyr (SepAuthorsRay W. Sliter, Peter J. Triezenberg, Patrick E. Hart, Amy E. Draut, William R. Normark, James E. ConradHigh-resolution chirp seismic reflection data acquired from the Cap de Creus shelf and canyon area, Gulf of Lions, Spain in 2004
Seismic reflection data were collected from the Cap de Creus shelf and canyon in the southwest portion of the Gulf of Lions in October 2004. The data were acquired using the U.S. Geological Survey`s (USGS) high-resolution Edgetech CHIRP 512i seismic reflection system aboard the R/V Oceanus. Data from the shipboard 3.5 kHz echosounder were also collected but are not presented here. The seismic reflAuthorsEric E. Grossman, Patrick E. Hart, Michael E. Field, Peter TriezenbergGIS of selected geophysical and core data in the northern Gulf of Mexico continental slope collected by the U.S. Geological Survey
Since 1982 the U. S. Geological Survey (USGS) has collected a large amount of surficial and shallow subsurface geologic information in the deep-water parts of the US EEZ in the northern Gulf of Mexico. These data include digital sidescan sonar imagery, digital seismic-reflection data, and descriptions and analyses of piston and gravity cores. The data were collected during several different projecAuthorsDavid C. Twichell, VeeAnn A. Cross, Valerie F. Paskevich, Deborah R. Hutchinson, William J. Winters, Patrick E. HartHigh-resolution multichannel seismic-reflection data acquired in the northern Gulf of Mexico, 2003
No abstract available.AuthorsPatrick E. Hart, Deborah R. Hutchinson, Myung LeeSeismic reflection and refraction data acquired in Canada Basin, Northwind Ridge and Northwind Basin, Arctic Ocean in 1988, 1992 and 1993
Seismic reflection and refraction data were collected in generally ice-covered waters of the Canada Basin and the eastern part of the Chukchi Continental Borderland of the Amerasia Basin, Arctic Ocean, during the late summers of 1988, 1992, and 1993. The data were acquired from a Polar class icebreaker, the U.S. Coast Guard Cutter Polar Star, using a seismic reflection system designed by the U.S.AuthorsArthur Grantz, Patrick E. Hart, Steven D. MayCruise Report for G1-03-GM, USGS Gas Hydrates Cruise, R/V Gyre, 1-14 May 2003, Northern Gulf of Mexico
This report gives a summary of the field program and instrumentation used on the R/V Gyre in the Gulf of Mexico in May, 2003, to collect multichannel seismic data in support of USGS and Department of Energy gas hydrate studies. Tabulated statistics, metadata, figures and maps are included to show the breadth of data collected and preliminary interpretations made during the field program. GeophysicAuthorsDeborah R. Hutchinson, Patrick E. HartHigh-Resolution Multichannel Seismic-Reflection Data Acquired in the Northern Gulf of Mexico, 1998-99
During June 1998 and April 1999, the U.S. Geological Survey (USGS) conducted two research cruises in the northern Gulf of Mexico to acquire high-resolution seismic reflection data across the upper and middle continental slope as part of an investigation of the seismic character, distribution, and potential effects of naturally-occurring marine gas hydrates and related free gas within the gas hydraAuthorsPatrick E. Hart, Alan K. Cooper, David C. Twichell, Myung Lee, Warren AgenaReprocessing of multi-channel seismic-reflection data collected in the Chukchi Sea
Contained on this set of two CD-ROMs are stacked and migrated multi-channel seismic-reflection data for 44 lines recorded in the Chukchi Sea, northern Alaska, by the United States Geological Survey in 1977, 1978, and 1980. All data were reprocessed by the USGS in 2000 using updated methods. The resulting final data have both increased temporal and spatial resolution thus providing improved interprAuthorsWarren F. Agena, Myung W. Lee, Patrick E. Hart - News