TY - RPRT TI - Ground‐penetrating radar, electromagnetic induction, terrain, and vegetation observations coupled with machine learning to map permafrost distribution at Twelvemile Lake, Alaska AU - S. Campbell AU - Martin A. Briggs AU - S.P. Roy AU - T. A. Douglas AU - S. Saari PY - 2021 DO - 10.1002/ppp.2100 UR - https://pubs.usgs.gov/publication/70218770 ID - 70218770 ER -