Depth-dependence of the underwater noise emission from melting glacier ice
Abstract
Submarine-melting of ice at the glacier-ocean interface accounts for a large portion of the ice-loss at tidewater glaciers and produces sound via bubble-release. The sound production is dominant in the sub-surface region near the glacier-ocean interface. This depth-dependence of the sound is studied by melting ice blocks in a glacial bay at various depths up to 20 m and recording their acoustics over a large frequency range. The acoustic energy decreases with depth in line with expectations from the physics of the phenomenon and is fit to an exponentially decaying curve. The estimated variation will be useful for interpreting the sound in marine-terminating glaciers bays in terms of the submarine-melting activity.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Feb 01, 2023
- Source ID
- 10.1121/10.0017348
Entities
People
- Dale Stokes
- Grant B Deane
- Hari Vishnu
- Hayden Johnson
- Mandar Chitre
- Mateusz Moskalik
- Oskar Glowacki
Organizations
- Institute of Geology and Geophysics
- Ministry of Science and Higher Education
- National Research Foundation
- National Science Foundation
- Office of Naval Research
- University of California
- University of California, San Diego