Bathymetry from two Arctic lakes in the Mackenzie Delta, Northwest Territories, Canada ...

• Main Authors: Cable, William L, Boike, Julia
• Format: Dataset
• Language: English
• Published: PANGAEA 2022
• Subjects: Bathymetry; Water Depth; Event label; Latitude of event; Longitude of event; Documentation file; Image; Binary Object; Binary Object File Size; Multiple measurements from boat; CA-Land_2021_NWCanada; AWI Arctic Land Expedition; Modular Observation Solutions for Earth Systems MOSES; Permafrost Research AWI_Perma; Permafrost Research Periglacial Dynamics @ AWI AWI_PerDyn; Arctic; Canada; Mackenzie Delta; Moses; Northwest Territories; permafrost
• Online Access: https://dx.doi.org/10.1594/pangaea.949264; https://doi.pangaea.de/10.1594/PANGAEA.949264

Bathymetry from small lakes in the Arctic is generally not available; however, this type of data is useful in interpreting other data, such as geoelectric surveys. To this end, we deployed a small automated boat carrying a sonar sensor to measure water depth and a GNSS to measure position on two lakes: Swiss Cheese Lake” (69.2320°N / 135.2513°W) between Sept. 13 and 16, 2021 and at “Lake 3” (68.7763°N / 133.5404°W) on Sept. 18, 2021. The boat is approximately 80 cm long and propelled with a single thruster. The boat uses a Pixhawk 4 controller to automate it's movement and record all the data from the mission. An Airmar SS510 transducer measures water depth (bathymetry) at 200kHz, with beam width of 9°, and can measure from 0.4 to 200m with a resolution of 1cm (depth accuracy 99.46% at full range). The boat has two GNSS (GPS) receivers; one U-blox Neo-M8N (2.5m position accuracy) and one Emlid Reach M+. The Reach M+ is capable of cm level positioning when used with a base station (RTK) or if the data are ...