DOI: 10.1002/grl.50914
论文题名: Remote hydroacoustic sensing of large icebergs in the southern Indian Ocean: Implications for iceberg monitoring
作者: Evers L.G. ; Green D.N. ; Young N.W. ; Snellen M.
刊名: Geophysical Research Letters
ISSN: 0094-8590
EISSN: 1944-8321
出版年: 2013
卷: 40, 期: 17 起始页码: 4694
结束页码: 4699
语种: 英语
英文关键词: CTBT
; hydroacoustic waves
; icebergs
; IMS
Scopus关键词: CTBT
; Hydroacoustic signals
; Hydroacoustic waves
; icebergs
; IMS
; Satellite observations
; Sound fixing and ranging channels
; Spatial and temporal correlation
; Hydrophones
; Sea ice
; data set
; hydrophone
; iceberg
; remote sensing
; satellite
; signal
; Indian Ocean
英文摘要: Hydroacoustic signals generated by drifting icebergs that crack, disintegrate, and collide were identified on two hydrophone arrays in the Indian Ocean. These hydrophone arrays are deployed in the Sound Fixing and Ranging channel, enabling the detection of small sources over ranges of several thousand kilometers due to the low attenuation. Source locations estimated from the signal bearings at the arrays are used to monitor two very large icebergs, C20 and B17B. Spatial and temporal correlation of the location estimates with satellite observations confirm that the icebergs can be hydroacoustically resolved. Hydroacoustic generation rates at both C20 and B17B are highest at times of observed breakup. For C20, which underwent continuous breakup, clusters of events to the southeast of the main iceberg show that hydroacoustic observations can identify trails of icebergs that calved from the main berg whose dimensions are less than that easily resolved by moderate resolution satellite monitoring. Key Points Hydro-acoustic array measurements complement satellite monitoring of icebergs New details in the disintegration of major iceberg are obtained The capacity of a new dataset of hydro-acoustic observations is shown ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84883621697&doi=10.1002%2fgrl.50914&partnerID=40&md5=9170901583578a0ea18451eb036fab7d
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5854
Appears in Collections: 气候减缓与适应
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作者单位: Seismology Division, KNMI, PO Box 201, 3730 AE De Bilt, Netherlands
Recommended Citation:
Evers L.G.,Green D.N.,Young N.W.,et al. Remote hydroacoustic sensing of large icebergs in the southern Indian Ocean: Implications for iceberg monitoring[J]. Geophysical Research Letters,2013-01-01,40(17).