Angelopoulos, Michael; Aliyeva, Mehriban; Cable, William L; Overduin, Pier Paul: Topography/bathymetry and active layer depth along the Western Amphibious Survey profile [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.982510 (dataset in review), In: Angelopoulos, M et al.: IRIS Syscal Pro electrical resistivity data in the region of Inuvik, Tuktoyaktuk and the Mackenzie Delta, Northwest Territories, Canada [dataset publication series]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.981228 (dataset in review)
Abstract:
This dataset contains four (4) electrical resistivity tomography (ERT) surveys taken during a summer 2023 Arctic expedition, led by the Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research. The scientists recorded ERT profiles offshore of the northern and southern coastlines of Tuktoyaktuk Island (Northwest Territories, Canada), as well as directly on the island. The measurements were part of the "DEPTHAW Field Campaign" within the "Modular Observation solutions for Earth Systems" (MOSES) program. Two of the surveys consist of multiple stitched segments, as the scientists moved the geoelectric cables from the sea (north of the island), across the island, and then into the sea again (south of the island). We refer to these surveys as "amphibious" profiles. The dataset provides reception voltage, injected current, resistance, and calculated apparent resistivity data for all quadrupole measurements. Stacking and standard deviation data for each measurement are also available. Topographic and bathymetric data, which are important for the inversion of ERT data, are available as separate files. These files also contain active layer thickness data where available. We collected the onshore topography data with an Abney clinometer, while we obtained the bathymetry data by extracting water depths from interpolated bathymetry maps at approximate electrode positions on the seafloor.
Keyword(s):
Coverage:
Median Latitude: 69.454670 * Median Longitude: -133.008220 * South-bound Latitude: 69.453630 * West-bound Longitude: -133.010490 * North-bound Latitude: 69.455710 * East-bound Longitude: -133.005950
Date/Time Start: 2023-07-23T00:00:00 * Date/Time End: 2023-07-23T00:00:00
Event(s):
CA-Land_2023_NWT_W-profile-amph (Western Amphibious Survey) * Latitude Start: 69.453630 * Longitude Start: -133.005950 * Latitude End: 69.455710 * Longitude End: -133.010490 * Date/Time: 2023-07-23T00:00:00 * Campaign: CA-Land_2023_NWT (DEPTHAW 2023) * Basis: AWI Arctic Land Expedition * Method/Device: Electrical resistivity tomography (ERT) * Comment: Survey length in surface distance: 300 m
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | POINT DISTANCE from start | Dist | m | Angelopoulos, Michael | Geocode | |
| 2 | ELEVATION | Elevation | m a.s.l. | Angelopoulos, Michael | Geocode | |
| 3 | Active layer depth | ALD | cm | Angelopoulos, Michael |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
19 data points