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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Detections of burros from helicopter aerial surveys in the southwestern US, 2016-2018 Detections of burros from helicopter aerial surveys in the southwestern US, 2016-2018
Feral burros (Equus asinus) and horses (E. ferus caballus) inhabiting public land in the western United States are intended to be managed at population levels established to promote a thriving, natural ecological balance. Like many large ungulate populations, management agencies employ aerial surveys to obtain estimates of horse and burro population sizes. Double-observer sightability...
Riparian vegetation data downstream of Glen Canyon Dam in Glen Canyon National Recreation Area and Grand Canyon National Park, AZ from 2014 to 2019 Riparian vegetation data downstream of Glen Canyon Dam in Glen Canyon National Recreation Area and Grand Canyon National Park, AZ from 2014 to 2019
These data were collected by the Grand Canyon Monitoring and Research Center (GCMRC) to support riparian vegetation monitoring along the Colorado River between Glen Canyon Dam and the full pool level of Lake Mead. The objectives of the GCMRC riparian vegetation monitoring program are to annually measure and summarize the status (composition and cover) of native and non-native vascular...
Slow-moving landslides and subsiding fan deltas mapped from Sentinel-1 InSAR in the Glacier Bay region, Alaska and British Columbia, 2018-2020 Slow-moving landslides and subsiding fan deltas mapped from Sentinel-1 InSAR in the Glacier Bay region, Alaska and British Columbia, 2018-2020
This data release contains four GIS shapefiles, one Google Earth kmz file, and five metadata files that summarize results from Interferometric Synthetic Aperture Radar (InSAR) analyses in the Glacier Bay region of Alaska and British Columbia. The principal shapefile (Moving_Ground) and the kmz file (GBRegionMovingGround) contain polygons delineating slow-moving (0.5-6 cm/year in the...
Sedimentological data from the Pliocene Yorktown Formation, near Rushmere, Virginia Sedimentological data from the Pliocene Yorktown Formation, near Rushmere, Virginia
Data consist of grain-size distribution by weight in grams of samples collected from the lectostratotype of the Yorktown Formation at Rushmere, Virginia, and from Pipsico Boy Scout Camp, Spring Grove, Virginia. In total, data from 45 samples is included.
Planktonic foraminifer census data from type section of Yorktown Formation at Rushmere, Virginia, USA Planktonic foraminifer census data from type section of Yorktown Formation at Rushmere, Virginia, USA
Data consist of census counts of Pliocene planktonic foraminifera from the lectostratotype of the Yorktown Formation at Rushmere Virginia, Rice's Pit, Yorktown, and the type section of the Morgarts Beach Member at Morgarts Beach, Virginia. In total, counts of individuals from 12 samples and 25 species are included.
Pinyon-juniper basal area, climate and demographics data from National Forest Inventory plots and projected under future density and climate conditions Pinyon-juniper basal area, climate and demographics data from National Forest Inventory plots and projected under future density and climate conditions
These data were compiled to help understand how climate change may impact dryland pinyon-juniper ecosystems in coming decades, and how resource management might be able to minimize those impacts. Objective(s) of our study were to model the demographic rates of PJ woodlands to estimate the areas that may decline in the future vs. those that will be stable. We quantified populations growth...