GSTDTAP  > 气候变化
DOI10.1029/2018GL077675
Predictions and Observations for the Oceanic Lithosphere From S-to-P Receiver Functions and SS Precursors
Rychert, Catherine A.; Harmon, Nick
2018-06-16
发表期刊GEOPHYSICAL RESEARCH LETTERS
ISSN0094-8276
EISSN1944-8007
出版年2018
卷号45期号:11页码:5398-5406
文章类型Article
语种英语
国家England
英文摘要

The ocean lithosphere is classically described by the thermal half-space cooling (HSC) or the plate models, both characterized by a gradual transition to the asthenosphere beneath. Scattered waves find sharp seismic discontinuities beneath the oceans, possibly from the base of the plate. Active source studies suggest sharp discontinuities from a melt channel. We calculate synthetic S-to-P receiver functions and SS precursors for the HSC and plate models and also for channels. We find that the HSC and plate model velocity gradients are too gradual to create interpretable scattered waves from the base of the plate. Subtle phases are predicted to follow a similar trend as observations, flattening at older ages. Therefore, the seismic discontinuities are probably caused by a thermally controlled process that can also explain their amplitude, such as melting. Melt may coalesce in channels, although channels >10 km thick should be resolvable by scattered wave imaging.


英文关键词ocean scattered waves thermal lithosphere-asthenosphere seismology melt
领域气候变化
收录类别SCI-E
WOS记录号WOS:000436249900021
WOS关键词ASTHENOSPHERE BOUNDARY ; UPPER-MANTLE ; GUTENBERG DISCONTINUITY ; PACIFIC LITHOSPHERE ; SEISMIC STRUCTURE ; HAWAIIAN PLUME ; HEAT-FLOW ; MELT ; OLIVINE ; BENEATH
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/27840
专题气候变化
作者单位Univ Southampton, Ocean & Earth Sci, Southampton, Hants, England
推荐引用方式
GB/T 7714
Rychert, Catherine A.,Harmon, Nick. Predictions and Observations for the Oceanic Lithosphere From S-to-P Receiver Functions and SS Precursors[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(11):5398-5406.
APA Rychert, Catherine A.,&Harmon, Nick.(2018).Predictions and Observations for the Oceanic Lithosphere From S-to-P Receiver Functions and SS Precursors.GEOPHYSICAL RESEARCH LETTERS,45(11),5398-5406.
MLA Rychert, Catherine A.,et al."Predictions and Observations for the Oceanic Lithosphere From S-to-P Receiver Functions and SS Precursors".GEOPHYSICAL RESEARCH LETTERS 45.11(2018):5398-5406.
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