Sonar Depth Measurements at Lakes on the Alaskan Inner Artic Coastal Plain, July 2017

• Main Authors: Claire Simpson, Christopher Arp
• Format: Dataset
• Language: unknown
• Published: Arctic Data Center 2018
• Subjects: Bathymetry; Lake Depth; Sonar; North Slope; Arctic; north slope; Alaska
• Online Access: https://search.dataone.org/view/urn:uuid:42488d81-d301-4250-9764-21f5811e73c7

This dataset provides discrete depth point measurements, each collected as part of a transect at 19 lakes on the Alaskan Inner Arctic Coastal Plain. Lakes at which measurements were collected had to be large enough for a floatplane to land on (i.e. > ~1 km2 lake surface area), as data were collected by attaching a HumminBird 798ci HD SI Combo automatic sonar unit to the back of a float and either taxiing slowly or drifting across lakes. Depth points were measured by the sonar recorder every second and are vertically accurate to 0.03 m. Erroneous points have been manually removed. All data were collected between July 22, 2017 and July 27, 2017. This depth data was collected for use in lake depth modeling. That is, these depth points were collected to serve as training and validation data for satellite imagery hue-based depth models. The purpose of such models is to reconstruct full bathymetry maps for lakes at which data were collected and further, to potentially derive regional bathymetry and volume estimates for the thousands of lakes across northern Alaska.