Data Releases
The data collected and the techniques used by USGS scientists should conform to or reference national and international standards and protocols if they exist and when they are relevant and appropriate. For datasets of a given type, and if national or international metadata standards exist, the data are indexed with metadata that facilitates access and integration.
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Major, Minor, and Trace Element Results from Sequential Extractions of Sediment Cores Collected from the National Crude Oil Spill Fate and Natural Attenuation Research Site near Bemidji, Minnesota, 2014 to 2019 Major, Minor, and Trace Element Results from Sequential Extractions of Sediment Cores Collected from the National Crude Oil Spill Fate and Natural Attenuation Research Site near Bemidji, Minnesota, 2014 to 2019
This U.S. Geological Survey (USGS) Data Release contains chemical analysis information on sediment core and oil samples collected at the National Crude Oil Spill Fate and Natural Attenuation Research Site near Bemidji, Minnesota, USA. Following a crude-oil spill in 1979, biodegradation of petroleum hydrocarbons in the contaminated aquifer has formed distinct zones of pH and/or redox...
Multiple Thermal Metrics of Four Notropis Species in Missouri (2022-2024) Multiple Thermal Metrics of Four Notropis Species in Missouri (2022-2024)
We estimated thermal preference, acclimated chronic exposure, metabolic thermal optima, and critical thermal maximum for four species in the Notropis genus during 2022-2024. Thermal preference was estimated for Blacknose Shiner (Notropis heterolepis) and Ozark Shiner (N. ozarcanus) for individuals acclimated at both 22°C and 26°C for a minimum of two weeks using a behavioral shuttlebox...
Forest Canopy Gap Data Products: Mississippi & Illinois Rivers (partial coverage) Forest Canopy Gap Data Products: Mississippi & Illinois Rivers (partial coverage)
As part of Upper Mississippi River Restoration (UMRR) Program, the U.S. Army Corps of Engineers (USACE) is conducting a study to understand what environmental factors are contributing to the failure of floodplain forests to regenerate. Broken Forest Canopy Identified by Lidar data sets: As part of Upper Mississippi River Restoration (UMRR), the U.S. Army Corps of Engineers (USACE) is...
Inventory of rainfall-induced landslides in Puerto Rico, 2022-2023 Inventory of rainfall-induced landslides in Puerto Rico, 2022-2023
This data release provides a point inventory of rainfall-induced landslides in Puerto Rico during 2022 and 2023. Each record includes the date, latitude, longitude, descriptive location, spatial confidence, reporting source, and reference link. Landslides were identified from public reports, municipal sources, and National Weather Service call logs. Verification required dated...
Seafloor Elevation and Volume Change along the Upper Florida Keys Reef Tract: 1934 to 2002 and 2002 to 2016 Seafloor Elevation and Volume Change along the Upper Florida Keys Reef Tract: 1934 to 2002 and 2002 to 2016
The U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center (SPCMSC) conducted research to quantify bathymetric changes in the Northern Florida Keys from Triumph Reef to Pickles Reef during two time periods, 1934 to 2002 and 2002 to 2016, within a 234.2 square-kilometer area. USGS staff calculated changes in seafloor elevation for both time periods using historical
Cesium-137 Isotope Activity Measured in Core 22KAR_21A from Karluk Lake, Kodiak Island, Alaska in 2022 Cesium-137 Isotope Activity Measured in Core 22KAR_21A from Karluk Lake, Kodiak Island, Alaska in 2022
The dataset lists specific activities of Cesium-137 in disintegrations per minute per gram (dpm per g) from 21 samples in the upper 33 centimeters of sediment core 22KAR-21A collected in Karluk Lake, Kodiak Island, Alaska.