DOI: 10.1002/grl.50877
论文题名: SPdKS analysis of ultralow-velocity zones beneath the western Pacific
作者: Jensen K.J. ; Thorne M.S. ; Rost S.
刊名: Geophysical Research Letters
ISSN: 0094-8623
EISSN: 1944-8354
出版年: 2013
卷: 40, 期: 17 起始页码: 4574
结束页码: 4578
语种: 英语
英文关键词: core-mantle boundary
; ultralow-velocity zones
Scopus关键词: Core-mantle boundary
; Lateral dimension
; Mapping techniques
; Philippine seas
; South China sea
; Synthetic seismogram
; Ultralow velocity zone
; Western Pacific
; Seismology
; Velocity control
; core-mantle boundary
; data set
; mapping
; sampling
; waveform analysis
; Coral Sea
; Pacific Ocean
; Pacific Ocean (West)
; Philippine Sea
; South China Sea
; Anthozoa
英文摘要: We collected a new data set of 1354 broadband SPdKS waveforms sampling the western Pacific Ocean region. These data indicate that multiple ultralow-velocity zones (ULVZs) exist in this region. We compared these data to 2.5-D synthetic seismograms computed with the PSVaxi method for a suite of 517 ULVZ models. The region beneath the North and South Philippine Sea shows no evidence for ULVZ presence. The region beneath the Coral Sea shows a large ULVZ which is approximately 700 × 700 km in lateral dimensions and up to 20 km thick. Multiple small-scale ULVZs approximately 180 × 180 km and up to 10 km thick are inferred beneath the South China Sea. Our findings are consistent with previous efforts utilizing the ScP seismic phase and provide additional constraints on ULVZ position and size. Key Points Collected a new dataset of 1354 waveforms We used new mapping technique to locate ULVZs We found previously undetected ULVZs ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84883457211&doi=10.1002%2fgrl.50877&partnerID=40&md5=b7c92a6fd123340afd568642d9edcf29
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5887
Appears in Collections: 气候减缓与适应
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作者单位: Department of Geology and Geophysics, University of Utah, Frederick A. Sutton Bldg., 115 S. 1460 E., Salt Lake City, UT 84112, United States
Recommended Citation:
Jensen K.J.,Thorne M.S.,Rost S.. SPdKS analysis of ultralow-velocity zones beneath the western Pacific[J]. Geophysical Research Letters,2013-01-01,40(17).