TY - RPRT TI - Seismic detection and analysis of icequakes at Columbia Glacier, Alaska AU - Shad O’Neel AU - Hans P. Marshall AU - Daniel E. McNamara AU - William Tad Pfeffer PY - 2007 DO - 10.1029/2006jf000595 UR - https://pubs.usgs.gov/publication/70174313 ID - 70174313 ER -