气候变化领域集成服务门户(CCPortal): Mantle Transition Zone Receiver Functions for Bermuda: Automation, Quality Control, and Interpretation

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DOI	10.1029/2020JB020177
	Mantle Transition Zone Receiver Functions for Bermuda: Automation, Quality Control, and Interpretation
	Burky A.L.; Irving J.C.E.; Simons F.J.
发表日期	2021
ISSN	21699313
卷号	126 期号:3
英文摘要	The origin of the Bermuda rise remains ambiguous, despite, or perhaps because of, the existence of sometimes incongruous seismic wave-speed and discontinuity models in the sub-Bermudian mantle. Hence, whether Bermuda is the surface manifestation of a mantle plume remains in question. Using the largest data set of seismic records from Bermuda to date, we estimate radial receiver functions at the Global Seismographic Network station BBSR in multiple frequency bands, using iterative time-domain deconvolution. Motivated by synthetic experiments using axisymmetric spectral-element forward waveform modeling, we devise a quality metric for our receiver functions to aid in the automation and reproduction of mantle transition zone discontinuity studies. We interpret the complex signals we observe by considering the mineralogical controls on mantle transition zone discontinuity structure, and conclude that our results are likely to be indicative of a thicker than average mantle transition zone. Our result is incompatible with the canonical model of a whole mantle plume in an olivine dominated mantle; however, considerations of phase transitions in the garnet system would allow us to reconcile our observations with the possible presence of a through-going hot thermal anomaly beneath Bermuda. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	automated quality control; Bermuda; mantle plume; mantle transition zone; mineralogical phase transitions; receiver functions
语种	英语
来源期刊	Journal of Geophysical Research: Solid Earth
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/187280
作者单位	Department of Geosciences, Princeton University, Princeton, NJ, United States; School of Earth Sciences, University of Bristol, Bristol, United Kingdom
推荐引用方式 GB/T 7714	Burky A.L.,Irving J.C.E.,Simons F.J.. Mantle Transition Zone Receiver Functions for Bermuda: Automation, Quality Control, and Interpretation[J],2021,126(3).
APA	Burky A.L.,Irving J.C.E.,&Simons F.J..(2021).Mantle Transition Zone Receiver Functions for Bermuda: Automation, Quality Control, and Interpretation.Journal of Geophysical Research: Solid Earth,126(3).
MLA	Burky A.L.,et al."Mantle Transition Zone Receiver Functions for Bermuda: Automation, Quality Control, and Interpretation".Journal of Geophysical Research: Solid Earth 126.3(2021).