Folders: ROOT > ScienceBase Catalog > Pacific Coastal and Marine Science Center > Bathymetry, topography, and sediment grain-size data from the Elwha River delta, Washington > Bathymetry and topography data from the Elwha River delta, Washington, September 2010 ( Show all descendants )
3 results (8ms)
Location
Folder
ROOT _ScienceBase Catalog __Pacific Coastal and Marine Science Center ___Bathymetry, topography, and sediment grain-size data from the Elwha River delta, Washington ____Bathymetry and topography data from the Elwha River delta, Washington, September 2010 Filters
Date Range
Types Contacts
Categories Tag Types Tag Schemes |
This portion of the USGS data release presents bathymetry data collected during surveys performed on the Elwha River delta, Washington in September 2010 (USGS Field Activity Number W-03-10-PS). Bathymetry data were collected using a small boat and a personal watercraft (PWC), each equipped with single-beam sonar systems and global navigation satellite system (GNSS) receivers. The sonar systems on the survey vessels consisted of an Odom Echotrac CV-100 single-beam echosounder and 200 kHz transducer with a 9° beam angle. Raw acoustic backscatter returns were digitized by the echosounder with a vertical resolution of 1.25 cm. Depths from the echosounders were computed using sound velocity profiles measured using a...
Categories: Data;
Types: Citation,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Bathymetry and Elevation,
Clallam County,
Echo Sounders,
Elwha River,
GPS (Global Positioning System),
This portion of the USGS data release presents topography data collected during surveys performed on the Elwha River delta, Washington, in September 2010 (USGS Field Activity Number W-03-10-PS). Topography data were collected on foot with global navigation satellite system (GNSS) equipment mounted on backpacks operating in Real-Time Kinematic (RTK) mode. A total of 3 GNSS backpacks, each equipped with a dual-frequency GNSS receiver and handheld data collector, were used during the survey. Differential corrections were transmitted at 1-Hz intervals by a VHF radio to the backpack GNSS receivers from a GNSS base station placed on a benchmark with known horizontal and vertical coordinates relative to the North American...
Categories: Data;
Types: Citation,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Bathymetry and Elevation,
Clallam County,
Elwha River,
GPS (Global Positioning System),
GPS measurement,
This portion of the USGS data release presents digital elevation models (DEMs) derived from bathymetric and topographic surveys conducted on the Elwha River delta, Washington, in September 2010 (USGS Field Activity Number W-03-10-PS). Nearshore bathymetry data were collected using a personal watercraft (PWC) and a small boat, each equipped with single-beam echosounders and survey-grade global navigation satellite system (GNSS) receivers. Topography data were collected on foot with survey-grade GNSS receivers mounted on backpacks. Positions of the survey platforms were referenced to a GNSS base station placed on a benchmark with known horizontal and vertical coordinates relative to the North American Datum of 1983...
Categories: Data;
Types: Citation;
Tags: Bathymetry and Elevation,
Echo Sounders,
GPS (Global Positioning System),
GPS measurement,
Global Positioning System (GPS) observations,
|
|