Mantle Transition Zone Receiver Functions for Bermuda: Automation, Quality Control, and Interpretation
نویسندگان
چکیده
Abstract The origin of the Bermuda rise remains ambiguous, despite, or perhaps because of, existence sometimes incongruous seismic wave‐speed and discontinuity models in sub‐Bermudian mantle. Hence, whether is surface manifestation a mantle plume question. Using largest data set records from to date, we estimate radial receiver functions at Global Seismographic Network station BBSR multiple frequency bands, using iterative time‐domain deconvolution. Motivated by synthetic experiments axisymmetric spectral‐element forward waveform modeling, devise quality metric for our aid automation reproduction transition zone studies. We interpret complex signals observe considering mineralogical controls on structure, conclude that results are likely be indicative thicker than average zone. Our result incompatible with canonical model whole an olivine dominated mantle; however, considerations phase transitions garnet system would allow us reconcile observations possible presence through‐going hot thermal anomaly beneath Bermuda.
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ژورنال
عنوان ژورنال: Journal Of Geophysical Research: Solid Earth
سال: 2021
ISSN: ['2169-9356', '2169-9313']
DOI: https://doi.org/10.1029/2020jb020177