| Identifier | 2015-605-FA | ||||||||
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| Purpose | Collect nearshore bathymetry and beach topography | ||||||||
| Location | Puget Sound | ||||||||
| Summary | rawdata; aerial photos, base, bathy, grid, matlab, photos, sampling, svp and topo files on FAD; CReiss added grainsize sample file to FAD | ||||||||
| Info derived | Nearshore Bathymetry, Beach Topography | ||||||||
| Comments | Entries for this field activity are based on entries from Field Activity 2014-649-FA | ||||||||
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| Vehicles | MarFac; Chevy Suburban - gray; 7 pass; G62-2874L |
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| Organization |
2885 Mission Street
Santa Cruz, CA95060
(831) 460-7401
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| Principal investigators | Jonathan WarrickGuy R Gelfenbaum | ||||||
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| Data category: | Imagery, Location-Elevation, Sampling, Sonar |
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| Data type: | Photo, Navigation, Transects, Geology, Single Beam, Sound Velocity |
| Equipment | Usage description | Data types | Datasets |
|---|---|---|---|
| Trimble R7 GPS receiver 9 | Benchmarks, LIDAR, Navigation, Profiles, Transects | 2 | |
| Echosounder-2 | Single Beam | (no data reported) | |
| Echosounder-1 | Single Beam | 1 | |
| grab | Geology | 1 | |
| camera | Photo | (no data reported) | |
| Trimble R7 GPS receiver | Benchmarks, LIDAR, Navigation, Profiles, Transects | (no data reported) | |
| Trimble R7 GPS (AS) | Benchmarks, Navigation, Profiles, Transects | (no data reported) | |
| soundvelocityprofiler | Sound Velocity | (no data reported) |
| Dataset name | Equipment | Description | Dataset contact |
|---|---|---|---|
| Digital elevation models (DEMs) of the Elwha River delta, Washington, January 2015 | Trimble R7 GPS receiver 9 | This part of the data release presents a digital elevation model (DEM) derived from bathymetry and topography data of the Elwha River delta collected in January 2015. Two dams on the Elwha River, Washington State, USA trapped over 20 million m3 of sediment, reducing downstream sediment fluxes and contributing to erosion of the river's coastal delta. The removal of the Elwha and Glines Canyon dams between 2011 and 2014 induced massive increases in river sediment supply and provided an unprecedented opportunity to examine the response of a delta system to changes in sediment supply. The U.S. Geological Survey developed an integrated research program aimed at understanding the ecosystem responses following dam removal that included regular monitoring of coastal and nearshore bathymetry and topography. As part of this monitoring program, the USGS conducted a bathymetric and topographic survey in the Strait of Juan de Fuca on the Elwha River delta, Washington (USGS Field Activity Number 2015-605-FA). Bathymetry data were collected using two personal watercraft (PWCs) and a kayak, each equipped with single beam echosounders and survey-grade global navigation satellite systems (GNSS). Topography data were collected on foot with GNSS receivers mounted on backpacks. DEM surfaces were produced from all available elevation data using linear interpolation. | Andrew Stevens |
| topograhy data | Trimble R7 GPS receiver 9 | published in ScienceBase; U.S. Geological Survey data release, doi: 10.5066/F7T151TG | Andrew Stevens |
| Nearshore bathymetry data from the Elwha River delta, Washington, January 2015, collected from kayak | Echosounder-1 | This part of the data release presents bathymetry data from the Elwha River delta collected in January 2015 using a kayak. The kayak was equipped with a single-beam echosounder and a survey-grade global navigation satellite system (GNSS) receiver. | Andrew Stevens |
| grainsize analysis | grab | published in ScienceBase; U.S. Geological Survey data release, doi: 10.5066/F7T151TG | Andrew Stevens |
