Pre-ABoVE: Ground-penetrating Radar Measurements of ALT on the Alaska North Slope

Published by ORNL_DAAC | National Aeronautics and Space Administration | Metadata Last Checked: October 19, 2025 | Last Modified: 2025-09-11

This data set includes estimates of permafrost Active Layer Thickness (ALT; cm), and calculated uncertainties, derived using a ground-penetrating radar (GPR) system in the field in August 2014 near Toolik Lake and Happy Valley on the North Slope of Alaska. GPR measurements were taken along 10 transects of varying length (approx. 1 to 7 km). Traditional ALT estimates from mechanical probing every 100 to 500 m along each transect are also included. These data are suitable for future studies of how ALT varies over relatively large geological features, such as hills and valleys, wetland areas, and drained lake basins.

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Complete Metadata

bureauCode	[ "026:00" ]
identifier	10.3334/ORNLDAAC/1265
landingPage	https://search.earthdata.nasa.gov/search?q=ReSALT_ALT_GPR_1265&ac=true
programCode	[ "026:000" ]
spatial	[[{"WestBoundingCoordinate":-149.5,"NorthBoundingCoordinate":69.15,"EastBoundingCoordinate":-148.7,"SouthBoundingCoordinate":68.4}],"CARTESIAN"]
temporal	2014-08-10/2014-08-10
theme	[ "Earth Science" ]