Carolyn Ruppel

In spring and summer 2017, the U.S. Geological Survey’s Gas Hydrates Project conducted two cruises aboard the research vessel Hugh R. Sharp to explore the geology, chemistry, ecology, physics, and oceanography of sea-floor methane seeps and water column gas plumes on the northern U.S. Atlantic margin between the Baltimore and Keller Canyons. Split-beam and multibeam echo sounders and a chirp subbottom profiler were deployed during the cruises to map water column backscatter, sea-floor bathymetry and backscatter, and subsurface stratigraphy associated with known and undiscovered sea-floor methane seeps. The first cruise, known as the Interagency Mission for Methane Research on Seafloor Seeps and designated as field...

Tags: Accomac Canyon, Atlantic Margin, Atlantic Ocean, Baltimore Canyon, CMHRP, All tags... Chincoteague Ridge, Coastal and Marine Hazards and Resources Program, DOE, DOI, Department of Energy, Department of the Interior, Energy Resources, Geophysics, HRS1704, HRS1713, IMMeRSS, Interagency Mission for Methane Research on Seafloor Seeps, Keller Canyon, Marine Geology, NOAA-OER, Norfolk Canyon, R/V Hugh R. Sharp, Stratigraphy, U.S. Geological Survey, USGS, United States of America, University of Rochester, WHCMSC, Washington Canyon, Woods Hole Coastal and Marine Science Center, field activity number 2017-001-FA, field activity number 2017-002-FA, Fewer tags

Sound velocity profiles - locations, images, and text files for sound velocity profiles calculated from XBT and CTD casts conducted during USGS field activities 2017-001-FA and 2017-002 FA

In spring and summer 2017, the U.S. Geological Survey’s Gas Hydrates Project conducted two cruises aboard the research vessel Hugh R. Sharp to explore the geology, chemistry, ecology, physics, and oceanography of sea-floor methane seeps and water column gas plumes on the northern U.S. Atlantic margin between the Baltimore and Keller Canyons. Split-beam and multibeam echo sounders and a chirp subbottom profiler were deployed during the cruises to map water column backscatter, sea-floor bathymetry and backscatter, and subsurface stratigraphy associated with known and undiscovered sea-floor methane seeps. The first cruise, known as the Interagency Mission for Methane Research on Seafloor Seeps and designated as field...

Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Accomac Canyon, Atlantic Ocean, CMHRP, Chincoteague Ridge, Coastal and Marine Hazards and Resources Program, All tags... DOE, DOI, Department of Energy, Department of the Interior, IMMeRSS, Interagency Mission for Methane Research on Seafloor Seeps, Keller Canyon, NOAA-OER, Norfolk Canyon, PNG, R/V Hugh R. Sharp, SSP, SVP, Seabird Electronics 911plus CTD, Sippican XBT, U.S. Geological Survey, USGS, United States of America, University of Rochester, WHCMSC, Washington Canyon, Woods Hole Coastal and Marine Science Center, field activity number 2017-001-FA, field activity number 2017-002-FA, geoscientificInformation, location, marine geophysics, navigational data, ocean sciences, oceanography, oceans, shapefile, sound speed profile, sound velocity, sound velocity profile, sound velocity profiles, Fewer tags

Ultra-short baseline - navigation points and tracklines for Applied Acoustics EasyTrack Nexus 2 USBL data collected for ROV Global Explorer during USGS field activity 2017-001-FA

In spring and summer 2017, the U.S. Geological Survey’s Gas Hydrates Project conducted two cruises aboard the research vessel Hugh R. Sharp to explore the geology, chemistry, ecology, physics, and oceanography of sea-floor methane seeps and water column gas plumes on the northern U.S. Atlantic margin between the Baltimore and Keller Canyons. Split-beam and multibeam echo sounders and a chirp subbottom profiler were deployed during the cruises to map water column backscatter, sea-floor bathymetry and backscatter, and subsurface stratigraphy associated with known and undiscovered sea-floor methane seeps. The first cruise, known as the Interagency Mission for Methane Research on Seafloor Seeps and designated as field...

Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Accomac Canyon, Applied Acoustics, Atlantic Margin, Atlantic Ocean, Baltimore Canyon, All tags... CMGP, Chincoteague Ridge, Coastal and Marine Geology Program, DOE, DOI, Department of Energy, Department of the Interior, EasyTrack Nexus 2, IMMeRSS, Interagency Mission for Methane Research on Seafloor Seeps, Keller Canyon, NOAA-OER, Norfolk Canyon, R/V Hugh R. Sharp, ROV Global Explorer, ROV navigation, U.S. Geological Survey, USBL, USBL navigation, USGS, United States of America, WHCMSC, Washington Canyon, Woods Hole Coastal and Marine Science Center, field activity number 2017-001-FA, geoscientificInformation, geospatial datasets, location, marine geology, marine geology, marine geophysics, navigational data, oceans, shapefile, trackline navigation, Fewer tags

Multibeam echo sounder - GeoTIFF grids for processed Reson 7160 seafloor bathymetry data collected during USGS field activities 2017-001-FA and 2017-002-FA

In spring and summer 2017, the U.S. Geological Survey’s Gas Hydrates Project conducted two cruises aboard the research vessel Hugh R. Sharp to explore the geology, chemistry, ecology, physics, and oceanography of sea-floor methane seeps and water column gas plumes on the northern U.S. Atlantic margin between the Baltimore and Keller Canyons. Split-beam and multibeam echo sounders and a chirp subbottom profiler were deployed during the cruises to map water column backscatter, sea-floor bathymetry and backscatter, and subsurface stratigraphy associated with known and undiscovered sea-floor methane seeps. The first cruise, known as the Interagency Mission for Methane Research on Seafloor Seeps and designated as field...

Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: 7160, Accomac Canyon, Atlantic Margin, Atlantic Ocean, CMHRP, All tags... Chincoteague Ridge, Coastal and Marine Hazards and Resources Program, DOE, DOI, Department of Energy, Department of the Interior, GeoTIFF, HRS1704, HRS1713, HYPACK HYSWEEP HSX and 7K formats, IMMeRSS, Interagency Mission for Methane Research on Seafloor Seeps, Keller Canyon, NOAA-OER, Norfolk Canyon, R/V Hugh R. Sharp, Reson, Reson s7k format, U.S. Geological Survey, USGS, United States of America, University of Rochester, WHCMSC, Washington Canyon, Woods Hole Coastal and Marine Science Center, bathymetry, elevation, field activity number 2017-001-FA, field activity number 2017-002-FA, geoscientificInformation, imageryBaseMapsEarthCover, marine geology, marine geophysics, multibeam bathymetry, multibeam echo sounder, multibeam sonar, oceans, Fewer tags

Preliminary global database of known and inferred gas hydrate locations

For more than 25 years, the U.S. Geological Survey Gas Hydrates Project has compiled and maintained an internal database of locations where the existence of gas hydrate has been confirmed or inferred in research studies. The existence of gas hydrate was considered confirmed when gas hydrate was recovered by researchers or videotaped from a vehicle (such as a submersible or remotely operated vehicle) near the sea floor. The existence of gas hydrate was considered inferred when seismic data, borehole logs, or certain geochemical characteristics match anomalies known to characterize gas hydrate. This data release provides a text description of the region, geographic coordinates, and the citation for the published reference...

Categories: Data; Tags: Alaska North Slope, Arctic, Atlantic, Beaufort Sea, Black Sea, All tags... Blake Ridge, Brazil, CMHRP, Canada, Caspian Sea, Chile, Coastal and Marine Hazards and Resources Program, East Sea, Energy Resources Program, Gulf of Mexico, Hikurangi Margin, Hydrate Ridge, India, Indian Ocean, Japan, Korea, Republic of, Lake Baikal, Mackenzie Delta, Mediterranean Sea, Nankai Trough, North Slope, Norwegian Sea, Pacific, Russia, Sea of Japan, Sea of Marmara, South China Sea, Svalbard, Tibetan Plateau, U.S. Geological Survey, USGS, USGS Gas Hydrates Project, Ulleung Basin, WHCMSC, Woods Hole Coastal and Marine Science Center, borehole logging, energy resources, environment, gas hydrate resources, geoscientificInformation, location, marine geology, marine geophysics, oceans, permafrost, Fewer tags