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

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 lak...

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Bibliographic Details
Main Authors: Cable, William L, Boike, Julia
Format: Dataset
Language:English
Published: PANGAEA 2022
Subjects:
AWI_PerDyn
AWI_Perma
AWI Arctic Land Expedition
Bathymetry
Binary Object
Binary Object (File Size)
CA-Land_2021_NWCanada
CA-Land_2021_NWCanada_Lake3
CA-Land_2021_NWCanada_SwissCheeseLake
Documentation file
Event label
Image
Lake 3
Latitude of event
Longitude of event
Modular Observation Solutions for Earth Systems
MOSES
MOSES 2021
mCan2021
MULT_Boat
Multiple measurements from boat
Permafrost Research
Permafrost Research (Periglacial Dynamics) @ AWI
Swiss Cheese Lake
Water Depth
Arctic
Mackenzie Delta
Northwest Territories
permafrost
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.949264
https://doi.org/10.1594/PANGAEA.949264
Description
Summary: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 post processed (PPK) after data collection. Available here are both the raw and processed datasets in different formats. Please see the included Readme_mcan21_BathyBoat.pdf for detailed information on the datafiles and data processing.

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