Data

Time series data of meteorological and oceanographic data (temperature & single-point currents) from the southern reef of Ofu, American Samoa, in support of a study on submarine groundwater discharge (SGD) dynamics on this reef within the National Park of American Samoa’s (NPSA) Ofu Unit. In January 2020, USGS scientists, in collaboration with NPSA, initiated an extensive field study on...

Gridded surfaces of bathymetry (50-meter resolution) and acoustic backscatter (25-meter resolution) were produced from 12 kHz Kongsberg Maritime EM124 multibeam echo sounding data of the Samoa Basin seafloor within the United States Exclusive Economic Zone surrounding the Territory of American Samoa. Together, these two datasets of seafloor elevation and seafloor character (substrate...

Various water variables, including dissolved inorganic nutrients, total alkalinity, dissolved inorganic carbon, and carbon and oxygen isotopes were measured in samples collected using both a Niskin-bottle rosette and Niskin-bottle attached to a ROV at selected depths from sites along the Aleutian Arc in June and July 2025 during the R/V Atlantis Ship AT50-38 (USGS field activity 2025-307...

The U.S. Geological Survey Western Ecological Research Center (WERC) and Pacific Coastal and Marine Science Center (PCMSC) collected cores in five restored tidal marshes in San Francisco Bay Estuary. The restored marsh sites included: Bahia Marsh, Tubbs Island Setback, Grays Marsh, and Pond A6. This data release includes photographs, computed tomography (CT) scans, Cesium-137 activity...

A global shapefile delineating prospectivity regions for seafloor massive sulfides (SMS), also known as polymetallic sulfides, was developed to identify seabed regions permissive for hydrothermal sulfide mineralization. The dataset classifies regions according to their relative prospectivity for SMS mineralization using geological and oceanographic parameters, including evidence of...

These data contain county-specified projection scenarios of coastal bluff retreat and associated uncertainty in King County, covering multiple scenarios near- and medium-term periods noted by year.

These data provide an estimate of potential coastal bluff retreat and erosion in response to changing conditions and sea-level rise during the 21st century, to help identify and assess possible areas of vulnerability. Present-day bluff-crest positions used as the baseline for projections are also included. Projections were made using numerical models, historical data, and field...

This data release contains structure-from-motion (SfM) point cloud data from aerial surveys conducted over the southern Monterey Bay littoral cell in Monterey Bay in the month of March from 2016 to 2025 on these dates: 20160308, 20170308, 20180307, 20190304, 20200309, 20210303, 20220312, 20230303, 20240307, and 20250326. Data sources include aerial photographs, digital images collected...

3-m bathymetry and acoustic-backscatter data were collected during a June 2023 multibeam survey of Lake Chelan, Washington. Data were collected and processed by the U.S. Geological Survey (USGS), Pacific Coastal and Marine Science Center (PCMSC) with fieldwork activity number 2023-631-FA. The 3-m data are provided as GeoTIFF images.

This data release contains structure from motion (SfM) photogrammetry products derived from high resolution aerial imagery collected on 11 and 12 January 2025 over the Defense Advanced Research Projects Agency (DARPA) Reefense hybrid oyster reef structures offshore of Tyndall Air Force Base, Florida. The imagery was collected using a Department of the Interior-owned uncrewed aerial...

This data release includes geochemistry data collected from sediments, sediment pore fluids, and high temperature hydrothermal vent fluids from the Galápagos Spreading Center. Samples were collected from Aug - Nov 2023. Data types include total carbon and nitrogen content, carbon and nitrogen stable isotopes, dissolved iron concentrations, and lipid biomarker concentrations.

This data release contains self-potential (SP) electric field data collected at the Escanaba Trough, Central Hill, in the northeast Pacific Ocean during the USGS research expedition in 2022. The datasets were gathered by the autonomous underwater vehicle (AUV) Sentry using a redundant, quasi-three-component electric field sensor with six channels. The release comprises comprehensive time...