DOI: 10.1002/2014GL061934
论文题名: Temporal and spatial evolution of an on-land hurricane observed by seismic data
作者: Tanimoto T. ; Lamontagne A.
刊名: Geophysical Research Letters
ISSN: 0094-9625
EISSN: 1944-9356
出版年: 2014
卷: 41, 期: 21 起始页码: 7532
结束页码: 7538
语种: 英语
英文关键词: land/atmosphere interaction
; natural hazard
; surface waves and free oscillations
; tropical cyclones
Scopus关键词: Seismic response
; Seismic waves
; Storms
; Surface waves
; Natural hazard
; Pressure solution
; Seismic amplitudes
; Surface pressure fluctuations
; Surface pressures
; Surface waves and free oscillations
; Temporal and spatial evolutions
; Tropical cyclone
; Hurricanes
; amplitude
; diffusion
; hurricane
; seismic data
; spatiotemporal analysis
; surface pressure
英文摘要: A dense seismic array can provide new perspectives for a decaying hurricane after its landfall. The case of Hurricane Isaac in 2012 is presented using a seismic array from EarthScope (USArray). The amplitude-distance plots from the center of the hurricane showed a sharp peak at a distance of 75 km at the time of landfall. This peak decayed and moved outward from the center over the next 1.5 days. The sharp peak can be explained by strong surface pressure fluctuations under the eyewall in which a focused ascending flow is known to exist. We reconstructed the time evolution of surface pressure that explains seismic data. Pressure solutions indicate that the eyewall stayed at 75 km in the first 10 h after the landfall, while the ascending flow weakened significantly. In the following 24 h, the eyewall diffused and moved to distances about 200-300 km, suggesting its collapse during this period. Key Points Hurricane eyewall can be studied from seismic amplitude versus distance plotsSeismically derived surface pressure shows the location and strength of eyewallTime evolution of this decaying process can be tracked ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84912062199&doi=10.1002%2f2014GL061934&partnerID=40&md5=434a005b1b3e8389b8ce800191e70984
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6889
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: Department of Earth Science, Earth Research Institute, University of California, Santa Barbara, CA, United States
Recommended Citation:
Tanimoto T.,Lamontagne A.. Temporal and spatial evolution of an on-land hurricane observed by seismic data[J]. Geophysical Research Letters,2014-01-01,41(21).