USGS technicians Eric Moore (left) and Jenny White deploy air guns (silver cylinders), compressor hose (black), and orange buoys at the start of a seismic survey to explore gas hydrates in the deepwater Gulf of Mexico.
Patrick Hart
Geophysicist Emeritus with the USGS Pacific Coastal and Marine Science Center
Science and Products
Coastal and Marine Geohazards of the U.S. West Coast and Alaska
U.S. Geological Survey Gas Hydrates Project
Island of Hawaii bird, mosquito, and avian malaria infection data 2001-2004
High-resolution multichannel sparker seismic-reflection and chirp sub-bottom data acquired along the Cascadia margin during USGS field activity 2019-024-FA
Multichannel minisparker seismic-reflection data collected offshore Glacier Bay National Park during USGS field activity 2015-629-FA
Hawaii Island forest bird movement data from 2014 to 2019
Multichannel sparker and chirp seismic reflection data collected offshore South East Alaska during USGS Field Activity 2017-621-FA
Calibrated marine sparker source amplitude decay versus offset offshore Santa Cruz, California
Gridded Data from a 2011 Multibeam Bathymetric Survey of the Western Part of Passage Canal, Near Whittier, Alaska
High-resolution multi-channel and Chirp seismic-reflection data from USGS cruise 2018-641-FA collected in south-central California in support of the Bureau of Ocean Energy Management Cal DIG I offshore alternative energy project
Multichannel minisparker, multichannel boomer, and chirp seismic-reflection data of USGS field activity 2017-612-FA collected in Puget Sound and Lake Washington in February of 2017
Chirp sub-bottom data of USGS field activity K0211PS collected in Puget Sound, Washington in April of 2011
Chirp, multichannel minisparker, and boomer seismic-reflection data from USGS field activity G-01-13-GA collected in Port Valdez, Alaska, in September 2013
Multichannel minisparker and chirp seismic reflection data of USGS field activity 2016-616-FA collected in the Catalina Basin offshore southern California in February 2016
California State Waters Map Series: Offshore of Refugio Beach, California
California State Waters Map Series: Offshore of Coal Oil Point, California
California State Waters Map Series: offshore of Santa Barbara, California
In 2007, the California Ocean Protection Council initiated the California Seafloor Mapping Program (CSMP), designed to create a comprehensive seafloor map of high-resolution bathymetry, marine benthic habitats, and geology within the 3-nautical-mile limit of California’s State Waters. The CSMP approach is to create highly detailed seafloor maps through collection, integration, interpretation, and
California State Waters Map Series: Offshore of Carpinteria, California
California State Waters Map Series — Offshore of Ventura, California
California State Waters Map Series: Offshore of Santa Barbara, California
USGS technicians Eric Moore (left) and Jenny White deploy air guns (silver cylinders), compressor hose (black), and orange buoys at the start of a seismic survey to explore gas hydrates in the deepwater Gulf of Mexico.
Seismic equipment is craned off research vessel Pelican at the dock in Cocodrie, Louisiana, after a 15-day expedition to explore gas hydrates in the deepwater Gulf of Mexico.
Seismic equipment is craned off research vessel Pelican at the dock in Cocodrie, Louisiana, after a 15-day expedition to explore gas hydrates in the deepwater Gulf of Mexico.
USGS technicians Jenny White and Tom O'Brien prepare lead weight to be added for proper ballasting of the seismic streamer on the fantail of the research vessel Pelican during a cruise to explore gas hydrates in the deepwater Gulf of Mexico from April to May, 2013.
USGS technicians Jenny White and Tom O'Brien prepare lead weight to be added for proper ballasting of the seismic streamer on the fantail of the research vessel Pelican during a cruise to explore gas hydrates in the deepwater Gulf of Mexico from April to May, 2013.
USGS technicians Eric Moore, Wayne Baldwin, and Tom O'Brien ready the 72-channel digital streamer for deployment on the research vessel Pelican during a cruise to explore gas hydrates in the deepwater Gulf of Mexico from April to May, 2013.
USGS technicians Eric Moore, Wayne Baldwin, and Tom O'Brien ready the 72-channel digital streamer for deployment on the research vessel Pelican during a cruise to explore gas hydrates in the deepwater Gulf of Mexico from April to May, 2013.
USGS technicians Eric Moore and Jenny White deploy instruments at the start of a seismic survey to explore gas hydrates in the deepwater Gulf of Mexico from April to May 2013.
USGS technicians Eric Moore and Jenny White deploy instruments at the start of a seismic survey to explore gas hydrates in the deepwater Gulf of Mexico from April to May 2013.
USGS co-chief scientist Seth Haines and technician Tom O’Brien work on data acquisition and analysis in the laboratory of the research vessel Pelican during a cruise to explore gas hydrates in the deepwater Gulf of Mexico from April to May, 2013.
USGS co-chief scientist Seth Haines and technician Tom O’Brien work on data acquisition and analysis in the laboratory of the research vessel Pelican during a cruise to explore gas hydrates in the deepwater Gulf of Mexico from April to May, 2013.
USGS technician Jenny White and Ray Sliter check instruments on the fantail of the research vessel Pelican during a cruise to explore gas hydrates in the deepwater Gulf of Mexico from April to May, 2013.
USGS technician Jenny White and Ray Sliter check instruments on the fantail of the research vessel Pelican during a cruise to explore gas hydrates in the deepwater Gulf of Mexico from April to May, 2013.
Categorizing active marine acoustic sources based on their potential to affect marine animals
Gas hydrates on Alaskan marine margins
Gas hydrate quantification in Walker Ridge block 313, Gulf of Mexico, from full-waveform inversion of ocean-bottom seismic data
Submarine landslide kinematics derived from high-resolution imaging in Port Valdez, Alaska
Measurement of sounds emitted by certain high-resolution geophysical survey systems
Practical approaches to maximizing the resolution of sparker seismic reflection data
Controls on submarine canyon head evolution: Monterey Canyon, offshore central California
Gas hydrate quantification using full-waveform inversion of sparse ocean-bottom seismic data: A case study from Green Canyon Block 955, Gulf of Mexico
High-resolution seismic imaging of depositional characteristics at gas hydrate research sites in the Gulf of Mexico
High-resolution seismic characterization of the gas and gas hydrate system at Green Canyon 955, Gulf of Mexico, USA
Missing link between the Hayward and Rodgers Creek faults
Subsea ice-bearing permafrost on the U.S. Beaufort Margin: 2. Borehole constraints
Science and Products
- Science
Coastal and Marine Geohazards of the U.S. West Coast and Alaska
Coastal and marine geohazards are sudden and extreme events beneath the ocean that threaten coastal populations. Such underwater hazards include earthquakes, volcanic eruptions, landslides, and tsunamis.ByNatural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Pacific Coastal and Marine Science Center, 3-D CT Core Imaging Laboratory, Core Preparation and Analysis Laboratory and Sample Repositories, Big Sur Landslides, Deep Sea Exploration, Mapping and Characterization, Subduction Zone ScienceU.S. Geological Survey Gas Hydrates Project
The USGS Gas Hydrates Project has been making contributions to advance understanding of US and international gas hydrates science for at least three decades. The research group working on gas hydrates at the USGS is among the largest in the US and has expertise in all the major geoscience disciplines, as well as in the physics and chemistry of gas hydrates, the geotechnical properties of hydrate... - Data
Filter Total Items: 19
Island of Hawaii bird, mosquito, and avian malaria infection data 2001-2004
This data publication contains data files collected as part of a field, laboratory, and modeling effort aimed at uncovering ecological drivers of avian malaria transmission and impacts on Hawaiian honeycreepers across an elevational gradient on the eastern flank of Mauna Loa and Kilauea volcanoes on Hawaii Island. From 2001-2004, mosquito and bird data were collected at nine sites ranging 25 to 1,High-resolution multichannel sparker seismic-reflection and chirp sub-bottom data acquired along the Cascadia margin during USGS field activity 2019-024-FA
High-resolution multichannel sparker seismic (MCS) data and chirp sub-bottom data were collected by the U.S. Geological Survey in collaboration with the University of Washington (UW) in the summer of 2019 along the Cascadia submarine forearc offshore Oregon and Washington. Data were acquired to characterize quaternary deformation and sediment dynamics along the central and northern Cascadia marginMultichannel minisparker seismic-reflection data collected offshore Glacier Bay National Park during USGS field activity 2015-629-FA
Multichannel seismic reflection data were collected by the U.S. Geological Survey in May of 2015 outside of Palma Bay, Alaska. Seismic data were acquired coincidentally with high resolution bathymetry (Dartnell and others, 2022). Data were acquired to map the offshore extension of the Queen Charlotte-Fairweather Fault. The fault has produced several significant earthquakes during the last 150 yearHawaii Island forest bird movement data from 2014 to 2019
This data release includes data and metadata containing estimated and predicted locations of radio telemetered Hawaiian forest birds. Radio telemetry data was collected using an automated radio telemetry network from 2014 to 2019 from birds in two study sites, one a continuous forest and the other a fragmented forest. Four bird species that varied in age and sex were studied: the nectarivorous ʻiʻMultichannel sparker and chirp seismic reflection data collected offshore South East Alaska during USGS Field Activity 2017-621-FA
High-resolution multichannel seismic reflection data and chirp sub-bottom data were collected by the U.S. Geological Survey in July and August 2017 offshore southeast Alaska to expand data coverage along the Queen Charlotte Fault system. Data were acquired to study earthquake hazards, fault mechanics and submarine mass wasting processes along the Queen Charlotte fault system, a 1200 km long transfCalibrated marine sparker source amplitude decay versus offset offshore Santa Cruz, California
This two-vessel survey was designed to quantify the decay of sound emitted from the SIG ELP790 minisparker (powered at 700 joules) and from the Applied Acoustics Delta Sparker (powered at 1.0 and 2.4 kilojoules) as a function of distance during marine geophysical surveys. Seven transect sites were surveyed at five different water depths (25, 50, 100, 200, and 600 meters) to compare the effects ofGridded Data from a 2011 Multibeam Bathymetric Survey of the Western Part of Passage Canal, Near Whittier, Alaska
This data release provides bathymetry data for the western part of Passage Canal, near Whittier Alaska. It was collected by the USGS Pacific Coastal and Marine Science Center in 2011 under Field Activity Number A0111GA. The data release consists of a 5 m grid, derived from processed and cleaned multibeam data. Depths were corrected for tidal variations and calculated using conductivity, temperaturHigh-resolution multi-channel and Chirp seismic-reflection data from USGS cruise 2018-641-FA collected in south-central California in support of the Bureau of Ocean Energy Management Cal DIG I offshore alternative energy project
This dataset is one of several collected as part of the Bureau of Ocean Energy Management (BOEM)-funded California Deepwater Investigations and Groundtruthing (Cal DIG I) project. The purpose of the study is to assess shallow geohazards, benthic habitats, and thereby the potential for alternative energy infrastructure (namely floating wind turbines) offshore south-central California due to its proMultichannel minisparker, multichannel boomer, and chirp seismic-reflection data of USGS field activity 2017-612-FA collected in Puget Sound and Lake Washington in February of 2017
High-resolution multichannel minisparker, multichannel boomer and chirp seismic-reflection data were collected by the U.S. Geological Survey and the University of Washington in February of 2017 west of Seattle in Puget Sound and in Lake Washington, Washington. Data were collected aboard University of Washington's R/V Clifford A. Barnes during USGS field activity 2017-612-FA. Sub-bottom acoustic peChirp sub-bottom data of USGS field activity K0211PS collected in Puget Sound, Washington in April of 2011
High-resolution chirp sub-bottom data were collected by the U.S. Geological Survey in April 2011 south of Bainbridge Island and west of Seattle in Puget Sound, Washington. Data were collected aboard the R/V Karluk during field activity K0211PS using an Edgetech SB-512i sub-bottom profiler. Sub-bottom acoustic penetration spans several tens of meters and is variable by location.Chirp, multichannel minisparker, and boomer seismic-reflection data from USGS field activity G-01-13-GA collected in Port Valdez, Alaska, in September 2013
Multichannel minisparker and boomer seismic-reflection and chirp sub bottom data were collected by the U.S. Geological Survey in September of 2013 in Port Valdez, Alaska. Data were collected aboard the USGS R/V Alaskan Gyre during field activity G-01-13-GA. Sub-bottom acoustic penetration spans several hundreds of meters and is variable by location. High-resolution multichannel seismic-reflectionMultichannel minisparker and chirp seismic reflection data of USGS field activity 2016-616-FA collected in the Catalina Basin offshore southern California in February 2016
This data release contains 25 multichannel minisparker seismic reflection (MCS) profiles and 41 chirp sub-bottom profiles that were collected in February of 2016 from the Catalina Basin offshore southern California by the U.S. Geological Survey Pacific and Coastal Marine Science Center in cooperation with the University of Washington. Data were collected aboard the University of Washington's R/V T - Maps
California State Waters Map Series: Offshore of Refugio Beach, California
In 2007, the California Ocean Protection Council initiated the California Seafloor Mapping Program (CSMP), designed to create a comprehensive seafloor map of high-resolution bathymetry, marine benthic habitats, and geology within California’s State Waters. The CSMP approach is to create highly detailed seafloor maps through collection, integration, interpretation, and visualization of swath sonarCalifornia State Waters Map Series: Offshore of Coal Oil Point, California
In 2007, the California Ocean Protection Council initiated the California Seafloor Mapping Program (CSMP), designed to create a comprehensive seafloor map of high-resolution bathymetry, marine benthic habitats, and geology within the 3-nautical-mile limit of California’s State Waters. The CSMP approach is to create highly detailed seafloor maps through collection, integration, interpretation, andCalifornia State Waters Map Series: offshore of Santa Barbara, California
In 2007, the California Ocean Protection Council initiated the California Seafloor Mapping Program (CSMP), designed to create a comprehensive seafloor map of high-resolution bathymetry, marine benthic habitats, and geology within the 3-nautical-mile limit of California’s State Waters. The CSMP approach is to create highly detailed seafloor maps through collection, integration, interpretation, and
California State Waters Map Series: Offshore of Carpinteria, California
In 2007, the California Ocean Protection Council initiated the California Seafloor Mapping Program (CSMP), designed to create a comprehensive seafloor map of high-resolution bathymetry, marine benthic habitats, and geology within the 3-nautical-mile limit of California’s State Waters. The CSMP approach is to create highly detailed seafloor maps through collection, integration, interpretation, andCalifornia State Waters Map Series — Offshore of Ventura, California
In 2007, the California Ocean Protection Council initiated the California Seafloor Mapping Program (CSMP), designed to create a comprehensive seafloor map of high-resolution bathymetry, marine benthic habitats, and geology within the 3-nautical-mile limit of California’s State Waters. The CSMP approach is to create highly detailed seafloor maps through collection, integration, interpretation, andCalifornia State Waters Map Series: Offshore of Santa Barbara, California
In 2007, the California Ocean Protection Council initiated the California Seafloor Mapping Program (CSMP), designed to create a comprehensive seafloor map of high-resolution bathymetry, marine benthic habitats, and geology within the 3-nautical-mile limit of California’s State Waters. The CSMP approach is to create highly detailed seafloor maps through collection, integration, interpretation, and - Multimedia
Components of oceanic seismic survey equipment
USGS technicians Eric Moore (left) and Jenny White deploy air guns (silver cylinders), compressor hose (black), and orange buoys at the start of a seismic survey to explore gas hydrates in the deepwater Gulf of Mexico.
USGS technicians Eric Moore (left) and Jenny White deploy air guns (silver cylinders), compressor hose (black), and orange buoys at the start of a seismic survey to explore gas hydrates in the deepwater Gulf of Mexico.
Craning off seismic equipmentSeismic equipment is craned off research vessel Pelican at the dock in Cocodrie, Louisiana, after a 15-day expedition to explore gas hydrates in the deepwater Gulf of Mexico.
Seismic equipment is craned off research vessel Pelican at the dock in Cocodrie, Louisiana, after a 15-day expedition to explore gas hydrates in the deepwater Gulf of Mexico.
2013 Gas Hydrate Expedition in Gulf of MexicoUSGS technicians Jenny White and Tom O'Brien prepare lead weight to be added for proper ballasting of the seismic streamer on the fantail of the research vessel Pelican during a cruise to explore gas hydrates in the deepwater Gulf of Mexico from April to May, 2013.
USGS technicians Jenny White and Tom O'Brien prepare lead weight to be added for proper ballasting of the seismic streamer on the fantail of the research vessel Pelican during a cruise to explore gas hydrates in the deepwater Gulf of Mexico from April to May, 2013.
2013 Gas Hydrate Expedition in Gulf of MexicoUSGS technicians Eric Moore, Wayne Baldwin, and Tom O'Brien ready the 72-channel digital streamer for deployment on the research vessel Pelican during a cruise to explore gas hydrates in the deepwater Gulf of Mexico from April to May, 2013.
USGS technicians Eric Moore, Wayne Baldwin, and Tom O'Brien ready the 72-channel digital streamer for deployment on the research vessel Pelican during a cruise to explore gas hydrates in the deepwater Gulf of Mexico from April to May, 2013.
2013 Gas Hydrate Expedition in Gulf of MexicoUSGS technicians Eric Moore and Jenny White deploy instruments at the start of a seismic survey to explore gas hydrates in the deepwater Gulf of Mexico from April to May 2013.
USGS technicians Eric Moore and Jenny White deploy instruments at the start of a seismic survey to explore gas hydrates in the deepwater Gulf of Mexico from April to May 2013.
2013 Gas Hydrate Expedition in Gulf of MexicoUSGS co-chief scientist Seth Haines and technician Tom O’Brien work on data acquisition and analysis in the laboratory of the research vessel Pelican during a cruise to explore gas hydrates in the deepwater Gulf of Mexico from April to May, 2013.
USGS co-chief scientist Seth Haines and technician Tom O’Brien work on data acquisition and analysis in the laboratory of the research vessel Pelican during a cruise to explore gas hydrates in the deepwater Gulf of Mexico from April to May, 2013.
2013 Gas Hydrate Expedition in Gulf of MexicoUSGS technician Jenny White and Ray Sliter check instruments on the fantail of the research vessel Pelican during a cruise to explore gas hydrates in the deepwater Gulf of Mexico from April to May, 2013.
USGS technician Jenny White and Ray Sliter check instruments on the fantail of the research vessel Pelican during a cruise to explore gas hydrates in the deepwater Gulf of Mexico from April to May, 2013.
- Publications
Filter Total Items: 38
Categorizing active marine acoustic sources based on their potential to affect marine animals
Marine acoustic sources are widely used for geophysical imaging, oceanographic sensing, and communicating with and tracking objects or robotic vehicles in the water column. Under the U.S. Marine Mammal Protection Act and similar regulations in several other countries, the impact of controlled acoustic sources is assessed based on whether the sound levels received by marine mammals meet the criteriAuthorsCarolyn D. Ruppel, T.S. Weber, Erica Staaterman, Stanley Labak, Patrick E. HartGas hydrates on Alaskan marine margins
Gas hydrate distributions on the marine margins of the U.S. state of Alaska are more poorly known than those on other U.S. margins, where bottom simulating reflections have been systematically mapped on marine seismic data to support modern, quantitative assessments of gas-in-place in gas hydrates. The extent of bottom simulating reflections in the U.S. Beaufort Sea has been known since the late 1AuthorsCarolyn D. Ruppel, Patrick E. HartGas hydrate quantification in Walker Ridge block 313, Gulf of Mexico, from full-waveform inversion of ocean-bottom seismic data
The Gulf of Mexico (GOM) Joint Industry Project Leg 2 logging-while-drilling data in Walker Ridge lease block 313 (WR313) in the GOM detected gas hydrate in coarse- and fine-grained sediments at sites WR313-G and WR313-H. The coarse-grained units are thin (<10 m) and highly saturated, whereas the fine-grained unit is thick (approximately 200 m) with low saturation and fracture-filling gas hydraAuthorsJiliang Wang, Priyank Jaiswal, Seth S. Haines, Yihong Yang, Patrick E. HartSubmarine landslide kinematics derived from high-resolution imaging in Port Valdez, Alaska
Submarine landslides caused by strong ground shaking during the M9.2 1964 Great Alaska earthquake generated a tsunami that destroyed much of the old town of Valdez, Alaska, and was responsible for 32 deaths at that location. We explore structural details of the 1964 landslide deposit, as well as landslide deposits from earlier events, in order to characterize kinematics of the landslide process. WAuthorsEmily Roland, Peter J. Haeussler, Thomas E. Parsons, Patrick E. HartMeasurement of sounds emitted by certain high-resolution geophysical survey systems
Scientific questions regarding the impact of anthropomorphic noise in the marine environment have resulted in an increasing number of regulatory requirements and precautionary mitigation strategies to reduce the risks associated with high-resolution marine geophysical surveys performed in waters subjected to government jurisdiction. An example of regulatory frameworks includes the Marine Mammal PrAuthorsSteven E Crocker, Frank D Fratantonio, Patrick E. Hart, David S. Foster, Thomas F. O'Brien, Stanley LabakPractical approaches to maximizing the resolution of sparker seismic reflection data
Sparkers are a type of sound source widely used by the marine seismic community to provide high-resolution imagery of the shallow sub-bottom (i.e., < 1000 m). Although sparkers are relatively simple, inexpensive, and high-frequency (100–2500 Hz) sources, they have several potential pitfalls due to their complicated and unpredictable signature. In this study we quantify the source characteristics oAuthorsJared W. Kluesner, Daniel S. Brothers, Patrick E. Hart, Nathaniel C. Miller, Gerry HatcherControls on submarine canyon head evolution: Monterey Canyon, offshore central California
The Monterey submarine canyon, incised across the continental shelf in Monterey Bay, California, provides a record of the link between onshore tectonism, fluvial transport, and deep-marine deposition. High-resolution seismic-reflection imaging in Monterey Bay reveals an extensive paleocanyon unit buried below the seafloor of the continental shelf around Monterey and Soquel canyon heads. PaleocanyoAuthorsKatherine L. Maier, Samuel Y. Johnson, Patrick E. HartGas hydrate quantification using full-waveform inversion of sparse ocean-bottom seismic data: A case study from Green Canyon Block 955, Gulf of Mexico
We present a case study of gas hydrate quantification using dense short-offset multichannel seismic (MCS) and sparse long-offset ocean-bottom-seismometer (OBS) data in lease block Green Canyon 955 (GC955), Gulf of Mexico (GOM), where the presence of gas hydrate was interpreted using logging while drilling (LWD) data acquired by the GOM Gas Hydrate Joint Industry Project Leg II expedition. We use fAuthorsJiliang Wang, Priyank Jaiswal, Seth S. Haines, Patrick E. Hart, Shiguo WuHigh-resolution seismic imaging of depositional characteristics at gas hydrate research sites in the Gulf of Mexico
No abstract available.AuthorsSeth S. Haines, Timothy S. Collett, Patrick E. Hart, B. Shedd, P. Weimer, M. Frye, R. BoswellHigh-resolution seismic characterization of the gas and gas hydrate system at Green Canyon 955, Gulf of Mexico, USA
The Pliocene and Pleistocene sediments at lease block Green Canyon 955 (GC955) in the Gulf of Mexico include sand-rich strata with high saturations of gas hydrate; these gas hydrate accumulations and the associated geology have been characterized over the past decade using conventional industry three-dimensional (3D) seismic data and dedicated logging-while-drilling (LWD) borehole data. To improveAuthorsSeth S. Haines, Patrick E. Hart, Timothy S. Collett, William Shedd, Matthew Frye, Paul Weimer, Ray BoswellMissing link between the Hayward and Rodgers Creek faults
The next major earthquake to strike the ~7 million residents of the San Francisco Bay Area will most likely result from rupture of the Hayward or Rodgers Creek faults. Until now, the relationship between these two faults beneath San Pablo Bay has been a mystery. Detailed subsurface imaging provides definitive evidence of active faulting along the Hayward fault as it traverses San Pablo Bay and benAuthorsJanet Watt, David A. Ponce, Thomas E. Parsons, Patrick E. HartSubsea ice-bearing permafrost on the U.S. Beaufort Margin: 2. Borehole constraints
Borehole logging data from legacy wells directly constrain the contemporary distribution of subsea permafrost in the sedimentary section at discrete locations on the U.S. Beaufort Margin and complement recent regional analyses of exploration seismic data to delineate the permafrost's offshore extent. Most usable borehole data were acquired on a ∼500 km stretch of the margin and within 30 km of theAuthorsCarolyn D. Ruppel, Bruce M. Herman, Laura L. Brothers, Patrick E. Hart - News