Dataset description: Eelgrass distributions and bathymetry derived from an acoustic survey of the Nisqually River delta, Washington, 2014

This portion of the USGS data release presents eelgrass distribution and bathymetry data derived from acoustic surveys of the Nisqually River delta, Washington in 2014 (USGS Field Activity Number D-01-14-PS). Eelgrass and bathymetry data were collected from the R/V George Davidson equipped with a single-beam sonar system and global navigation satellite system (GNSS) receiver. The sonar system consisted of a Biosonics DT-X single-beam echosounder and 420 kHz transducer with a 6-degree beam angle.

Version	1
Keywords	sea-floor characteristics, aquatic vegetation, single-beam echo sounder, GPS measurement, marine geophysics, bathymetry, bathymetry measurement
Data types	Single Beam
Format	comma-delimited text;
Amount	81.81 MB

Contacts

Contact	Andrew Stevens PCMSC_data@usgs.gov

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Location of materials and files

Public files	https://www.sciencebase.gov/catalog/file/get/5ea70c7b82cefae35a1d905c?name=nq14_bathy_eelgrass.csv https://www.sciencebase.gov/catalog/item/5ea70c7b82cefae35a1d905c https://www.sciencebase.gov/catalog/item/5ea70c5982cefae35a1d9059 https://doi.org/10.5066/P9N9K2I1
Metadata	https://cmgds.marine.usgs.gov/metadata/pcmsc/DataReleases/ScienceBase/DR_P9N9K2I1/nq14_bathy_eelgrass_metadata.xml Outline - Questions and answers - Text - XML

Activities and equipment

Activity	Equipment
D0114PS	Biosonics 420kHz Fisheries single-beam echosounder