Equipment: Ponar grab sampler

Dataset Name: Surface-sediment grain-size distributions of the Elwha River delta, Washington, July 2017

Description: This portion of the data release presents sediment grain-size data from samples collected on the Elwha River delta, Washington, in July 2017 (USGS Field Activity 2017-638-FA). Surface sediment was collected from 80 locations using a small ponar, or 'grab', sampler from the R/V Frontier in water depths between about 1 and 17 m around the delta. An additional 31 samples were collected by hand at low tide. A hand-held global satellite navigation system (GNSS) receiver was used to determine the locations of sediment samples. The grain size distributions of suitable samples were determined using standard techniques developed by the USGS Pacific Coastal and Marine Science Center sediment lab. Grab samples that yielded less than 50 g of sediment were omitted from analysis. The grain-size data are provided in a comma-delimited spreadsheet (.csv).

Contact: Andrew Stevens (astevens@usgs.gov)

Format: comma-delimited text;

Data Location: https://www.sciencebase.gov/catalog/file/get/5c9bf765e4b0b8a7f62c32c3/?name=ew17_july_grainsize.csv
https://www.sciencebase.gov/catalog/item/5c9bf765e4b0b8a7f62c32c3
https://doi.org/10.5066/P9AJ8ALB

Metadata URL: https://cmgds.marine.usgs.gov/metadata/pcmsc/DataReleases/ScienceBase/DR_P9AJ8ALB/ew17_july_grainsize.xml

Supplementary Info: