Near-shore Topography Transects of Barrow area Lakes

Survey transects logged location, elevation, and surface condition (e.g., vegetation, snow/ice, or water) at approximately three meter intervals. The transect also measured bathymetry along the transect for several meters into the lake where possible.

Survey stations were logged in space by Trimble® 5700 GPS receiver with a Zephyr Geodetic antenna. The horizontal accuracy of the Differential GPS (DGPS) point, based on the DGPS point processing reports, was approximately ±20 cm. Although vertical accuracy was roughly ±200 cm for the DGPS tie point, the accuracy of the transect points relative to each other was ~1cm.