| DOI: | 10.1002/2014GL062859
|
| 论文题名: | Underwater acoustic signatures of glacier calving |
| 作者: | Glowacki O.; Deane G.B.; Moskalik M.; Blondel P.; Tegowski J.; Blaszczyk M.
|
| 刊名: | Geophysical Research Letters
|
| ISSN: | 0094-8990
|
| EISSN: | 1944-8721
|
| 出版年: | 2015
|
| 卷: | 42, 期:3 | | 起始页码: | 804
|
| 结束页码: | 812
|
| 语种: | 英语
|
| 英文关键词: | calving event
; tidewater glacier
; time-lapse photography
; underwater acoustics
|
| Scopus关键词: | Ice
; Photography
; Special effects
; Acoustic method
; calving event
; Complex nature
; Estimation and predictions
; High frequency HF
; High resolution
; Quantitative description
; Tidewater glaciers
; Underwater acoustics
; ambient noise
; contact zone
; glacier mass balance
; ice-structure interaction
; tidewater glacier
; Arctic
; Hansbreen
; Hornsund
; Spitsbergen
; Svalbard
; Svalbard and Jan Mayen
|
| 英文摘要: | Climate-driven ice-water interactions in the contact zone between marine-terminating glaciers and the ocean surface show a dynamic and complex nature. Tidewater glaciers lose volume through the poorly understood process of calving. A detailed description of the mechanisms controlling the course of calving is essential for the reliable estimation and prediction of mass loss from glaciers. Here we present the potential of hydroacoustic methods to investigate different modes of ice detachments. High-frequency underwater ambient noise recordings are combined with synchronized, high-resolution, time-lapse photography of the Hans Glacier cliff in Hornsund Fjord, Spitsbergen, to identify three types of calving events: typical subaerial, sliding subaerial, and submarine. A quantitative analysis of the data reveals a robust correlation between ice impact energy and acoustic emission at frequencies below 200Hz for subaerial calving. We suggest that relatively inexpensive acoustic methods can be successfully used to provide quantitative descriptions of the various calving types. © 2015 The Authors. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84924953730&doi=10.1002%2f2014GL062859&partnerID=40&md5=5fdd99f25833fc378ae08db633d33bcd
|
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/8606
|
| Appears in Collections: | 科学计划与规划
气候变化与战略
|
|
There are no files associated with this item.
|
|
作者单位: | Institute of Geophysics, Polish Academy of Sciences, Centre for Polar Studies KNOW, Warsaw, Poland
|
| Recommended Citation: | |
Glowacki O.,Deane G.B.,Moskalik M.,et al. Underwater acoustic signatures of glacier calving[J]. Geophysical Research Letters,2015-01-01,42(3).
|
|
|