Crustal and Upper Mantle Imaging of Botswana Using Magnetotelluric Method

Akinremi, Stephen; Fadel, Islam; Meijde, M. van der

doi:10.1002/essoar.10509948.1

Cited by 1 publication

(3 citation statements)

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“…The receiver function deconvolution was computed using open software: rf (Eulenfeld, 2020) and the processed receiver function traces (HDF5 format) can be accessed from Akinremi et al. (2023). Synthetic receiver functions were calculated using open software Computer Programs in Seismology (Herrmann, 2013).…”

Section: Data Availability Statementmentioning

confidence: 99%

“…All seismic data used in this study are available publicly through IRIS Data management center web service (https://ds.iris.edu/ds) with the network codes NL, NR, and TA. The receiver function deconvolution was computed using open software: rf (Eulenfeld, 2020) and the processed receiver function traces (HDF5 format) can be accessed from Akinremi et al (2023). Synthetic receiver functions were calculated using open software Computer Programs in Seismology (Herrmann, 2013).…”

Section: Data Availability Statementmentioning

confidence: 99%

“…Synthetic receiver functions were calculated using open software Computer Programs in Seismology (Herrmann, 2013). The crustal modeling of the receiver functions including H‐ κ stacking, sequential H‐ κ stacking, resonance filtering, and waveform‐fitting grid search were done using open software: rfsed, and can be accessed at (Akinremi et al., 2024).…”

Section: Data Availability Statementmentioning

confidence: 99%

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Waveform Fitting of Receiver Functions for Enhanced Retrieval of Crustal Structure in the Presence of Sediments

Akinremi,

van der Meijde,

Thomas

et al. 2024

JGR Solid Earth

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The receiver function technique is widely used to image crustal structure using P‐to‐S converted phases at the Moho discontinuity. However, the presence of sedimentary layer generates additional P‐to‐S conversions and reverberations, which can overprint the Moho phases and pose problems in imaging crustal structure with standard receiver function techniques. We introduce a robust two‐step method that uses H‐κ stacking to determine average thickness and Vp/Vs of the sedimentary layer, followed by waveform‐fitting of the observed receiver function to constrain the average crustal thickness and sub‐sediment Vp/Vs. We tested the method using both synthetic data and real‐data from stations located on sedimentary layers in the Netherlands and USA. We show that the new method outperforms other common approaches in retrieving accurate Moho depth and sub‐sediment Vp/Vs estimates, even in cases where the Moho phases are completely overprinted by large‐amplitude phases related to sedimentary layers.

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Section: Data Availability Statementmentioning

confidence: 99%