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Minnesota Point post-nourishment surveys of the beach topography and near-shore bathymetry of Lake Superior, Duluth, MN, September - October, 2021 (ver. 2.0, September 2024) Minnesota Point post-nourishment surveys of the beach topography and near-shore bathymetry of Lake Superior, Duluth, MN, September - October, 2021 (ver. 2.0, September 2024)
This data represents elevation of the beach topography and near-shore bathymetry of Lake Superior at two beach nourishment locations along Minnesota Point, Duluth, Minnesota. The first location is near the Superior point of entry, and was surveyed in September 2021. The second location is near the Duluth Entry and was surveyed in October 2021. LiDAR data were collected using a Velodyne...
Data release of geochemistry and geochronology for Proterozoic rocks in southwestern Colorado and rocks from drill core from Colorado, North Dakota, Nevada, Wyoming, Montana, and Nebraska Data release of geochemistry and geochronology for Proterozoic rocks in southwestern Colorado and rocks from drill core from Colorado, North Dakota, Nevada, Wyoming, Montana, and Nebraska
This U.S. Geological Survey (USGS) data release provides whole rock major, minor, and trace element geochemical data, mineral chemistry, and monazite and xenotime geochronology for Proterozoic rocks in the Needle Mountains of southwestern Colorado and for Proterozoic rocks sampled from drill cores from Colorado, North Dakota, Nevada, Wyoming, Montana, and Nebraska. Samples from the...
Data release for Ice and ocean constraints on early human migrations into North America along the Pacific coast Data release for Ice and ocean constraints on early human migrations into North America along the Pacific coast
Founding populations of the first Americans likely occupied parts of Beringia during the Last Glacial Maximum (LGM) (1). The timing, pathways, and modes of their southward transit remain unknown, but blockage of the interior route by North American ice sheets between ~26-14 cal kyr BP (ka) favors a coastal route during this period. Using models and paleoceanographic data from the North...
aqtsra, Utilities for preprocessing raw and approved unit-value time-series hydrometeorological data before statistical endeavors aqtsra, Utilities for preprocessing raw and approved unit-value time-series hydrometeorological data before statistical endeavors
The aqtsra package in the R language provides a light-weight utility for merging U.S. Geological Survey National Water Information System (NWIS) flat-file tables of raw and approved unit-value time-series data from the AQUARIUS Time-Series software. Provision is made for parsing time stamps, insertion of the day fraction into the year, and days since last site visit among other limited...
Flood-frequency of rural, non-tidal streams in Louisiana and parts of Arkansas, Mississippi, and Texas, 1877-2016 Flood-frequency of rural, non-tidal streams in Louisiana and parts of Arkansas, Mississippi, and Texas, 1877-2016
The dataset includes flood-frequency data and related files for 211 streamgages operated by the U.S. Geological Survey (USGS) in Louisiana and parts of the surrounding states of Arkansas, Mississippi, and Texas as well as assembled explanatory variables (physical, climatic, and land-use characteristics of the basins). The data in this release were used in generalized least-squares (GLS )
Little Dry Creek and Cottonwood Creek Sediment Transport Data, 2012-2018, San Joaquin Watershed in the California Central Valley Little Dry Creek and Cottonwood Creek Sediment Transport Data, 2012-2018, San Joaquin Watershed in the California Central Valley
Two tributary watersheds¬ Cottonwood Creek and Little Dry Creek¬ to the greater San Joaquin watershed, in California’s Central Valley were assessed for sediment and flow dynamics, between water years (Oct. 1 to Sept. 30) 2011 and 2019. The two systems deliver suspended sediment to the San Joaquin River below Friant Dam, California. Because these two creeks are directly down river of...