Filters: Tags: Glacier Bay (X) > partyWithName: U.S. Geological Survey (X)

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Multichannel sparker seismic-reflection data of field activity 2016-656-FA; between Icy Point and Dixon Entrance, Gulf of Alaska from 2016-08-07 to 2016-08-26 This data release contains high-resolution multichannel seismic (MCS) reflection data collected in August of 2016 along the southeast Alaska continental margin. Structure perpendicular MCS profiles were collected along the Queen Charlotte-Fairweather fault. The data were collected aboard the R/V Norseman using a Delta sparker sound source and recorded on a 64-channel digital streamer. Subbottom acoustic penetration spans up to several hundreds of meters, and is variable by location. Categories: Data; Tags: Bathymetry, Bathymetry and Elevation, CMGP, Chatham Strait, Coastal and Marine Geology Program, All tags... Continental Margins, Dixon Entrance, Glacier Bay, Gulf of Alaska, Icy Point, Mount Edgecumbe, Noyes Canyon, PCMSC, Pacific Coastal and Marine Science Center, Pacific Ocean, Sitka, State of Alaska, U.S. Geological Survey, USGS, Yakobi Valley, Yakutat, geoscientificInformation, oceans, seismic reflection profiling, sub-bottom profiling, Fewer tags Rock mass quality and structural geology observations in Glacier Bay National Park and Preserve, Alaska from the summers of 2021 and 2022 Subaerial and submarine landslides adjacent to, and within, Glacier Bay, Glacier Bay National Park and Preserve (GBNPP), Alaska pose a threat to the public because of their potential to generate ocean waves that could impact marine activities. Although historical records of tsunamis generated by landslides in GBNPP are uncommon, there are records that document the destructive power of at least three landslide-generated tsunamis in Lituya Bay on the west side of the park (Miller, 1960; Fritz, 2001). Additionally, the threat of a rapid failure of a slow-moving subaerial bedrock landslide in Tidal Inlet off the West Arm of Glacier Bay has drawn attention because of its tsunamigenic potential that could affect boat... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Alaska, Alaska, East Arm, GHSC, Geologic Hazards Science Center, All tags... Geologic Strength Index, Geomorphology, Glacier Bay, Glacier Bay National Park and Preserve, Glacier Bay National Park and Preserve, Glaciology, Hydrology, Landslide Hazards Program, Rock Quality Designation, Structural Geology, USGS, USGS Science Data Catalog (SDC), West Arm, bedding, engineering geology, flysch, fracture, fractured bedrock, geology, geomorphology, geoscientificInformation, geotechnical analysis, gis, glaciation, glacierized fjords and bays, granite, instability, landslide, rock avalanche, rock mass quality, rock slide, rock topple, schmidt hammer, structural geology, tsunami, Fewer tags Multichannel minisparker seismic-reflection data of field activity 2015-651-FA; Chatham Strait and Cross Sound, southeastern Alaska from 2015-08-03 to 2015-08-21 This data release contains high-resolution multichannel seismic (MCS) reflection data collected in August of 2015 to explore marine geologic hazards of inland waterways of southeastern Alaska. Sub-bottom profiles were acquired in the inland waters between Glacier Bay and Juneau, including Cross Sound and Chatham Strait. High-resolution seismic-reflection profiles were acquired to assess evidence for active seabed faulting and submarine landslide hazards. The data were collected aboard the US Geological Survey R/V Alaskan Gyre. The seismic-reflection data were acquired using a 500-Joule minisparker source and a 48-channel Geometrics GeoEel digital streamer. Subbottom acoustic penetration spans up to several hundreds... Categories: Data; Types: Citation; Tags: Bathymetry, Bathymetry and Elevation, CMG, CMGP, Chatham Strait, All tags... Coastal and Marine Geology Program, Continental Margins, Cross Sound, Glacier Bay, Juneau, Lynn Canal, PCMSC, Pacific Coastal and Marine Science Center, Pacific Ocean, State of Alaska, U.S. Geological Survey, USGS, geoscientificInformation, minisparker, oceans, seismic reflection profiling, sub-bottom profiling, Fewer tags Chirp seismic-reflection data of field activity 2015-651-FA; Chatham Strait and Cross Sound, southeastern Alaska from 2015-08-03 to 2015-08-21 This data release contains high-resolution seismic reflection data collected in August of 2015 to explore marine geologic hazards of inland waterways of southeastern Alaska. Sub-bottom profiles were acquired in the inland waters between Glacier Bay and Juneau, including Cross Sound and Chatham Strait. High-resolution seismic-reflection profiles were acquired to assess evidence for active seabed faulting and submarine landslide hazards. The data were collected aboard the US Geological Survey R/V Alaskan Gyre. The seismic-reflection data were acquired using a tow-fish Edgetech 512 chirp subbottom profiler. Subbottom acoustic penetration spans up to several tens of meters, and is variable by location. This data release... Categories: Data; Types: Citation; Tags: Bathymetry, Bathymetry and Elevation, CMG, CMGP, Chatham Strait, All tags... Coastal and Marine Geology Program, Continental Margins, Cross Sound, Glacier Bay, Juneau, Lynn Canal, PCMSC, Pacific Coastal and Marine Science Center, Pacific Ocean, State of Alaska, U.S. Geological Survey, USGS, chirp, geoscientificInformation, oceans, seismic reflection profiling, sub-bottom profiling, Fewer tags