Monitoring the Thermal State of Permafrost (TSP) in Arctic Alaska using the DOI/GTN-P Deep Borehole Array

This project involves monitoring the thermal state of permafrost on the Arctic Slope of Alaska using the DOI/GTN-P Deep Borehole Array. The U.S. Geological Survey has been monitoring temperatures in this 24-element array since the holes were drilled in the early 1970s to early 1980s. Most of the well sites are located on the arctic coastal plain between the Brooks Range and the Arctic Ocean while the others are in the foothills to the south; nearly all the wells penetrate the base of permafrost. Drilling processes significantly disturbed the temperature field around these deep wells when they were first drilled. With a few exceptions, this disturbance is estimated to have dissipated to 0.1 K or less by 1989. In this respository we provide the fully processed temperature logs from the DOI/GTN-P array. These logs represent the true temperatures in the wellbores and surrounding rocks at the time of the measurements. A 'corrected' dataset where the effects of the drilling disturbance have been removed is under development. A complete description of the monitoring program is given by Clow, G.D., 2014: Earth System Science Data, 6, 201-218, doi:10.5194/essd-6-201-2014. Data from the DOI/GTN-P Deep Borehole Array contribute to global efforts to monitor the thermal state of permafrost through the Global Terrestrial Network for Permafrost (GTN-P).