Electronic Detection of Serac Avalanches and Glacier Noise at Vaughan Lewis Icefall, Alaska

• Published in: Journal of Glaciology
• Main Author: Pinchak, Alfred C.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Cambridge University Press (CUP) 1972
• Subjects: Earth-Surface Processes; glacier; Journal of Glaciology; Alaska
• Online Access: http://dx.doi.org/10.1017/s0022143000022267; https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000022267

Abstract Design details of a portable, light-weight, seismic recording system are presented together with data concerning sensitivity and frequency response. Field procedures and methods are described with emphasis on coupling the hydrophone detector to waves propagating in the glacier ice. Two of the field-recorded signals are reproduced here: the first resulted from a small serac avalanche in the ice fall and the second was produced by an unusual, local source of glacier noise.