AKA: Unalakleet Bathy/Topo 2019
Other ID: none
Status: Completed
Organization(s): USGS, Pacific Coastal and Marine Science Center
Funding Program(s): Climate Change Impacts to the U.S. Pacific and Arctic Coasts (ZP00F00)
Principal Investigator(s): Li Erikson
Affiliate Investigator(s):
Information Specialist(s): Cordell Johnson, Alexander Snyder
Data Type(s): Location-Elevation: Profiles, Sonar: Single Beam
Scientific Purpose/Goals: Collect bathymetric and topography data to support modeling efforts.
Vehicle(s): None
Start Port/Location: Unalakleet, Alaska
End Port/Location: Unalakleet, Alaska
Start Date: 2019-07-06
End Date: 2019-07-14
Equipment Used: Trimble R7 GPS (AS), Trimble R7 GPS receiver, Echosounder-1 (Odom Echotrac CV-100), Echosounder-2 (Odom Echotrac CV-100), transducer 1, transducer 2
Information to be Derived: Bathymetric and topographic measurements.
Summary of Activity and Data Gathered: Collected bathymetric measurements from 2 vessels of opportunity using single beam sonar and topographic measurements using a backpack mounted gps.
Staff: Cordell Johnson, Alexander Snyder
Affiliate Staff:
Notes:
Location:
Unalakleet, Alaska
| Boundaries | |||
|---|---|---|---|
| North: 63.88120378 | South: 63.85428757 | West: -160.86730957 | East: -160.7711792 |
Platform(s):
Other |
Snyder, A.G., Johnson, C.D., Gibbs, A.E., and Erikson, L.D., 2021, Nearshore bathymetry of the Unalakleet River mouth, Alaska, 2019: U.S. Geological Survey data release, https://doi.org/10.5066/P9238F8K.
| Survey Equipment | Survey Info | Data Type(s) | Data Collected |
|---|---|---|---|
| Trimble R7 GPS (AS) | --- | Benchmarks Navigation Profiles Transects | |
| Trimble R7 GPS receiver | --- | Benchmarks LIDAR Navigation Profiles Transects | |
| Echosounder-1 (Odom Echotrac CV-100) | --- | Single Beam | Nearshore bathymetry data from the Unalakleet River mouth, Alaska, 2019 (This data release presents nearshore bathymetry data collected at the mouth of the Unalakleet River in Alaska, near the city of Unalakleet. The data were collected in August 2019 by the U.S. Geological Survey, Pacific Coastal and Marine Science Center. Nearshore bathymetry was measured along survey lines from the shore to a depth of approximately -7.4 m NAVD88 and in a portion of the estuary closest to the mouth. Bathymetry data were collected using small boat equipped with a single-beam sonar system and global navigation satellite system (GNSS) receiver. The sonar system consisted of an Odom Echotrac CV-100 single-beam echosounder and 200 kHz transducer with a 9-degree beam. Depths from the seafloor to the echosounder were calculated using the digitized acoustic backscatter and sound velocity profiles, measured in multiple locations using a YSI CastAway CTD. The position of the boat and echosounder was recorded at 10 Hz using a Trimble R7 receiver and Zephyr 2 antenna. Survey-grade vertical and horizontal positions were achieved by applying differential corrections from a nearby GNSS base station installed for the purposes of this survey.) |
| Echosounder-2 (Odom Echotrac CV-100) | --- | Single Beam | |
| transducer 1 | --- | Single Beam | |
| transducer 2 | --- | Single Beam |
