499 datasets found
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Federal
Elemental chemistry, radionuclides, and charcoal in watershed soil and reef sediment at Olowalu, Maui, 2022
Department of the Interior —
Fine-sediment elemental chemistry, short-lived cosmogenic radionuclides (Beryllium-7, Cesium-137, and Lead-210), charcoal counts, and total organic carbon contents... -
Federal
Acoustic-backscatter data from Floras Lake, Oregon, June 2018
Department of the Interior —
This portion of the USGS data release presents acoustic-backscatter data collected during surveys performed in Floras Lake, Oregon in June 2018 (USGS Field Activity... -
Federal
Eelgrass and substrate characteristics in Bellingham Bay, Washington, July 2019
Department of the Interior —
Eelgrass (Zostera marina) characteristics, sediment grain size distributions, sediment total organic carbon contents (TOC), carbon isotope ratios of sediment organic... -
Federal
Census counts of palynomorphs from core 721-1 obtained in 2002 off San Francisquito Creek in South San Francisco Bay
Department of the Interior —
This data release provides census counts of palynomorphs in sediments of a core obtained off San Francisquito Creek in South San Francisco Bay. -
Federal
Benthic kelp and invertebrate counts, California sheephead abundance, substrate rugosity data, and benthic temperatures from long-term kelp forest ecosystem monitoring sites at San Nicolas Island, California
Department of the Interior —
Four data sets are included here to aid in assessing the influence of substrate complexity on kelp forest ecosystem stability. One data set consists of counts of a... -
Federal
Water depth and acoustic backscatter data collected from NOAA Ship Nancy Foster in Caribbean Sea, South of St. John and St. Thomas and Buck Island, St. Croix, US Virgin Islands from 2005-02-01 to 2005-02-12 (NCEI Accession 0131860)
National Oceanic and Atmospheric Administration, Department of Commerce —
The Center for Coastal Monitoring and Assessment (CCMA) conducted the second year of an ongoing scientific research mission on board NOAA Ship NANCY FOSTER. The... -
Federal
Water depth and acoustic backscatter data collected from NOAA Ship Nancy Foster in Caribbean Sea, Buck Island Reef and Virgin Islands National Coral Reef Monuments, U.S. Virgin Islands from 2004-02-18 to 2004-03-05 (NCEI Accession 0131850)
National Oceanic and Atmospheric Administration, Department of Commerce —
The Center for Coastal Monitoring and Assessment (CCMA) conducted the first year of an ongoing scientific research mission on board NOAA Ship Nancy Foster. The... -
Federal
Interpretation of the seabed geologic substrates in quadrangle 5 of the Stellwagen Bank National Marine Sanctuary region offshore of Boston, Massachusetts based on data collected by the U.S. Geological Survey from 1993-2019
Department of the Interior —
The U.S. Geological Survey (USGS), in cooperation with the National Marine Sanctuary Program of the National Oceanic and Atmospheric Administration (NOAA), has... -
Federal
PAC_EXT - Extracted seabed data for the continental margin of the U.S. Pacific Coast (California, Oregon, Washington) from usSEABED (pac_ext.txt)
Department of the Interior —
This data layer (PAC_EXT.txt) is one of five point coverages of known sediment samples, inspections, and probes from the usSEABED data collection for the U.S. Pacific... -
Federal
California State Waters Map Series--Point Conception to Hueneme Canyon Web Services
Department of the Interior —
In 2007, the California Ocean Protection Council initiated the California Seafloor Mapping Program (CSMP), designed to create a comprehensive seafloor map of high-... -
Federal
Hard and Soft Bottom Seafloor Substrate Map Derived from an Unsupervised Classification of Gridded Bathymetry Derivatives for the NOAA Habitat Blueprint West Hawaii Focus Area
National Oceanic and Atmospheric Administration, Department of Commerce —
Hard and soft bottom seafloor substrate data and maps for the NOAA Habitat Blueprint West Hawaii Focus Area (WHFA) in the Main Hawaiian Islands. Cell values in the... -
Federal
Recurrence interval of sediment mobility at select points in the Gulf of Mexico for May 2010 to May 2011 (GMEX_mobile_freq, Geographic, WGS 84)
Department of the Interior —
The U.S. Geological Survey has been characterizing the regional variation in shear stress on the sea floor and sediment mobility through statistical descriptors. The... -
Federal
The half-interpercentile range of bottom shear stress for the Gulf of Mexico, May 2010 to May 2011 (GMEX_hIPR, Geographic, WGS 84)
Department of the Interior —
The U.S. Geological Survey has been characterizing the regional variation in shear stress on the sea floor and sediment mobility through statistical descriptors. The... -
Federal
Computed Tomography (CT) scans of sediment cores collected from Montague Island, AK
Department of the Interior —
This dataset includes computed tomography (CT) scans of sediment cores collected from coastal environments on Montague Island, Alaska. The cores were collected with... -
Federal
Archive of Digitized Analog Boomer Seismic Reflection Data Collected from Lake Ponchartrain, Louisiana to Mobile Bay, Alabama, During Cruises Onboard the R/V ERDA-1, June and August, 1992
Department of the Interior —
In June and August of 1992, the U.S. Geological Survey (USGS) conducted geophysical surveys to investigate the shallow geologic framework from Lake Pontchartrain,... -
Federal
Lipid biomarker analyses (alkanes, sterols and fatty acids) of authigenic carbonates collected on the FK190612 research expedition in the north Pacific Ocean in June and July 2019 along the Cascadia Margin.
Department of the Interior —
Carbonate lipid biomarkers (n-alkanes, fatty acids, and fatty alcohols/sterols) were determined in carbonate rocks collected on the FK190612 research expedition in... -
Federal
Grain size and bulk density from Little Holland Tract and Liberty Island, Sacramento-San Joaquin Delta, California, 2015 to 2019 (ver. 4.0, March 2025)
Department of the Interior —
Grain size distribution, bulk density, and percent carbon are reported for sediment samples from two flooded agricultural tracts, Little Holland Tract and Liberty... -
Federal
MGL1111backsutm.asc: Multibeam backscatter data collected by the U.S. Geological Survey in the Bering Sea in 2011 during cruise MGL1111, 100-meter gridded data in Esri gridascii export format, UTM zone 60 coordinates
Department of the Interior —
This raster dataset represents approximately 49,581 square kilometers of Simrad EM122 multibeam backscatter-intensity data collected in the Bering Sea during U.S.... -
Federal
Multi-Sensor Core Logger (MSCL) P-wave velocity, gamma-ray density, and magnetic susceptibility whole-core logs of sediment cores collected in 2009 offshore from Palos Verdes, California
Department of the Interior —
This part of the data release includes Multi-Sensor Core Logger (MSCL) P-wave velocity, gamma-ray density, and magnetic susceptibility whole-core logs of sediment... -
Federal
High-resolution marine seismic reflection data from the San Francisco Bay area, collected in 1993 during USGS Field Activity J8-93-SF
Department of the Interior —
Between 1993 and 1997, the U.S. Geological Survey acquired high-resolution, marine seismic-reflection profile data across submerged portions of known and inferred...
499 datasets found