globalchange  > 科学计划与规划
DOI: 10.1002/2016GL070793
论文题名:
Mantle plumes beneath the South Pacific superswell revealed by finite frequency P tomography using regional seafloor and island data
作者: Obayashi M.; Yoshimitsu J.; Sugioka H.; Ito A.; Isse T.; Shiobara H.; Reymond D.; Suetsugu D.
刊名: Geophysical Research Letters
ISSN: 0094-8393
EISSN: 1944-8124
出版年: 2016
卷: 43, 期:22
起始页码: 11628
结束页码: 11634
语种: 英语
英文关键词: broadband ocean bottom seismometer ; French Polynesia ; hot spot ; mantle plume ; P wave tomography ; South Pacific superswell
Scopus关键词: Seismic waves ; Seismographs ; Thermal plumes ; Broadband ocean-bottom seismometers ; French Polynesia ; Hot spot ; Mantle plume ; P waves ; South Pacific superswell ; Tomography
英文摘要: We present a new tomographic image beneath the South Pacific superswell, using finite frequency P wave travel time tomography with global and regional data. The regional stations include broadband ocean-bottom seismograph stations. The tomographic image shows slow anomalies of 200-300 km in diameter beneath most hot spots in the studied region, extending continuously from the shallow upper mantle to 400 km depth. Narrow and weak slow anomalies are detected at depths of 500–1000 km, connecting the upper mantle slow anomalies with large-scale slow anomalies with lateral dimension of 1000–2000 km prevailing below 1000 km depth down to the core-mantle boundary. There are two slow anomalies around the Society hot spot at depths shallower than 400 km, which both emerge from the same slow anomaly at 500 km depth. One of them is located beneath the Society hot spot and the other underlies 500 km east of the Society hot spot, where no volcanism is observed. ©2016. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85002548655&doi=10.1002%2f2016GL070793&partnerID=40&md5=8a94171128f0758ea6ed0bbb739650ee
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9356
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: Department of Deep Earth Structure and Dynamics, Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan

Recommended Citation:
Obayashi M.,Yoshimitsu J.,Sugioka H.,et al. Mantle plumes beneath the South Pacific superswell revealed by finite frequency P tomography using regional seafloor and island data[J]. Geophysical Research Letters,2016-01-01,43(22).
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