Image identifying locations of USGS borehole sites in Arctic Alaska
Detailed Description
Image identifying locations of USGS borehole sites in Arctic Alaska where borehole temperature measurements were acquired in permafrost regions between 1950 and 1988 by the U.S. Geological Survey. A large number of the 87 sites (boreholes) represented in this dataset are deep enough to penetrate the base of permafrost.
Sources/Usage
Public Domain.
Public Domain