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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Surface Elevation Table (SET) data from the Blackwater National Wildlife Refuge (2010-2013) Surface Elevation Table (SET) data from the Blackwater National Wildlife Refuge (2010-2013)
Here we provide data used to report on changes in tidal marsh elevation at the Blackwater National Wildlife Refuge (NWR), located in Dorchester, Maryland, USA. This dataset includes Surface Elevation Table (SET) measurements taken from 40 SET platforms distributed across the refuge. At each platform location annual measurements of wetland surface elevation were made from 20010-2013.
Data release for "Peri-Gondwanan sediment in the Arkoma Basin derived from the north: The detrital zircon record of a uniquely concentrated non-Laurentian source signal in the late Paleozoic" Data release for "Peri-Gondwanan sediment in the Arkoma Basin derived from the north: The detrital zircon record of a uniquely concentrated non-Laurentian source signal in the late Paleozoic"
New detrital zircon and thin section point count data associated with Data release for 'Peri-Gondwanan sediment in the Arkoma Basin derived from the north: The detrital zircon record of a uniquely concentrated non-Laurentian source signal in the late Paleozoic'. Found in Geosphere, v. 20, n. 5, p. 1286-1314.
Suspended-sediment concentration and grain size in the San Lorenzo River, coastal California Suspended-sediment concentration and grain size in the San Lorenzo River, coastal California
Water samples were collected from the San Lorenzo River, Santa Cruz, California, and analyzed for suspended-sediment concentration and sand break (proportion of sand vs. silt-plus-clay) at the U.S. Geological Survey (USGS) laboratory in Santa Cruz, California. The samples were all single-vertical samples collected from the thalweg of the river, using a D-95 sampler deployed from a bridge...
Laboratory optical measurements in support of assessing PFAS enrichment in natural foams on surface waters within the Delaware River Basin Laboratory optical measurements in support of assessing PFAS enrichment in natural foams on surface waters within the Delaware River Basin
One phenomenon that has been shown to concentrate and release per- and polyfluoroalkyl substances (PFAS) in surface water is the formation of natural foams. For surface water foams to form, surface active compounds or surfactants must be present in the water along with a source of gas bubbles. Some examples of surface-active compounds include humic and fulvic acids, colloidal particles...
Bat echolocation data recorded using Song Meter SM4 acoustic recorder and Echo Meter Touch 2 bat detector paired with insect prey availability, Grand Canyon National Park, Arizona, 2022 Bat echolocation data recorded using Song Meter SM4 acoustic recorder and Echo Meter Touch 2 bat detector paired with insect prey availability, Grand Canyon National Park, Arizona, 2022
These data were compiled as part of an effort to compare the relative data quality and modeling performance of bat data recorded with two different acoustic detectors. The objective of our study was to construct models evaluating the relative predictive quality of data collected by these two detectors. These data represent 48 paired sampling events where acoustic bat data was collected...
Fluvial-aeolian sediment availability models: Colorado River, Grand Canyon Fluvial-aeolian sediment availability models: Colorado River, Grand Canyon
These data were compiled to model the area of exposed, bare sand along 168 km of the Colorado River between Glen Canyon Dam and Bright Angel Creek, Arizona. Objective(s) of our study were to develop and validate four models of exposed sand area for the study reach, respectively based on 1) single-day maxiumum river discharge, 2) multiple-day river discharge patterning, 3) field-observed...