| Identifier | TR412PS | ||||||||
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| Alternate names | T-R4-12-PS | ||||||||
| Purpose | Long-term measurement of currents, waves, and acoustic backscatter | ||||||||
| Description | United States Geological Survey,National Park Service. Chief Scientist: Jon Warrick. Recover/redeploy and maintain two benthic tripods with Acoustic Doppler Current Profilers (ADCP), underwater cameras, optical backscatter sensors (OBS) data of field activity T-R4-12-PS in Offshore of the Elwha River delta from 10/12/2012 to 10/12/2012 | ||||||||
| Location | Offshore of the Elwha River delta | ||||||||
| Info derived | current velocities, wave height, period and directions, water turbidity from acoustic and optical backscatterance | ||||||||
| Comments | These are long-term tripods that are resupplied with batteries, zincs, and other materials on a 6 month interval. ELW11A1T, ELW11B1T Staff information imported from InfoBank Joanne Ferreira Non USGS data manager = Jon Warrick | ||||||||
| Platform |
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| Itinerary |
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| Bounds |
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| Activity | Recover/redeploy and maintain two benthic tripods with Acoustic Doppler Current Profilers (ADCP), underwater cameras, optical backscatter sensors (OBS) |
| Organization |
National Park Service(NPS)
multiple locations
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| Organization |
2885 Mission Street
Santa Cruz, CA95060
(831) 460-7401
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| Principal investigators | Jonathan Warrick | ||
| Crew members |
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| Data category: | Imagery, Time Series |
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| Data type: | Photo, Mooring (physical oceanography) |
| Equipment | Usage description | Data types | Datasets |
|---|---|---|---|
| underwatercamera | Photo | 1 | |
| tripod | Mooring (physical oceanography) | (no data reported) |
| Dataset name | Equipment | Description | Dataset contact |
|---|---|---|---|
| Characterization of seafloor photographs near the mouth of the Elwha River during the first two years of dam removal (2011-2013) | underwatercamera | We characterized seafloor sediment conditions near the mouth of the Elwha River from underwater photographs taken every four hours from September 2011 to December 2013. A digital camera was affixed to a tripod that was deployed in approximately 10 meters of water. Each photograph was qualitatively characterized as one of six categories: (1) base, or no sediment, (2) low sediment, (3) medium sediment, (4) high sediment, (5) turbid, or (6) kelp. For base conditions, no sediment was present on the seafloor. Low sediment conditions were characterized by a light dusting of sediment, medium sediment conditions were characterized by a layer of sediment that covered all rock surfaces but did not obscure the relief of the seafloor, high sediment conditions were characterized by a layer of sediment that covered all rock surfaces and obscured the relief of the seafloor. During turbid conditions, suspended sediment in the water column obscured the view of the seafloor, and during kelp conditions, blades of kelp covered the camera lens, blocking our view of the seafloor. | Melissa M Foley |
