DOI: 10.1002/2014GL060964
论文题名: Hydroacoustic investigation of submarine landslides at West Mata volcano, Lau Basin
作者: Caplan-Auerbach J. ; Dziak R.P. ; Bohnenstiehl D.R. ; Chadwick W.W. ; Lau T.-K.
刊名: Geophysical Research Letters
ISSN: 0094-9834
EISSN: 1944-9565
出版年: 2014
卷: 41, 期: 16 起始页码: 5927
结束页码: 5934
语种: 英语
Scopus关键词: Submarine geology
; Submarines
; Volcanoes
; Average speed
; Hydroacoustic
; Interference patterns
; Mass wasting
; Specific frequencies
; Spectrograms
; Submarine landslides
; Landslides
; acoustic method
; estimation method
; landslide
; volcanic eruption
; wave propagation
; Lau Basin
; Pacific Ocean
英文摘要: Submarine landslides are an important process in volcano growth yet are rarely observed and poorly understood. We show that landslides occur frequently in association with the eruption of West Mata volcano in the NE Lau Basin. These events are identifiable in hydroacoustic data recorded between ~5 and 20 km from the volcano and may be recognized in spectrograms by the weak and strong powers at specific frequencies generated by multipathing of sound waves. The summation of direct and surface-reflected arrivals causes interference patterns in the spectrum that change with time as the landslide propagates. Observed frequencies are consistent with propagation down the volcano's north flank in an area known to have experienced mass wasting in the past. These data allow us to estimate the distance traveled by West Mata landslides and show that they travel at average speeds of ~10-25m/s. © 2014. American Geophysical Union. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84906024025&doi=10.1002%2f2014GL060964&partnerID=40&md5=d5f4528a5558a9a578e329d13a3dd88d
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7098
Appears in Collections: 气候减缓与适应
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作者单位: Geology Department, Western Washington University, Bellingham, WA, United States
Recommended Citation:
Caplan-Auerbach J.,Dziak R.P.,Bohnenstiehl D.R.,et al. Hydroacoustic investigation of submarine landslides at West Mata volcano, Lau Basin[J]. Geophysical Research Letters,2014-01-01,41(16).