Mapping the Alaskan Moho
Date
2018-10-10
Authors
Miller, Meghan
Moresi, Louis
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Volume Title
Publisher
Seismological Society of America
Abstract
We present a series of Moho depth maps for the Alaskan region based on P receiver function estimates using data from all available broadband instrumentation from 1999 to April 2018 including the USArray Transportable Array. The average Moho depths beneath individual broadband stations are presented first as spot measurements and then used to produce a series of interpolated smooth surfaces by an adaptive triangulation process followed by the fitting of a bicubic spline. The interpolated surfaces include a measure of confidence in the interpolation and can be used to assess and determine a preferred model. The resulting Moho depth map (single continuous surface) provides a reasonable estimate of the Earth’s outermost layer thickness beneath Alaska as constrained by receiver functions for use in applications such as tomography, regional‐scale interpretations, or simulations of seismic waves. The models are provided as a python module with examples in the form of jupyter notebooks. Our original workflow is provided to allow updates to this dataset or use with other similar datasets.
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Keywords
Alaska, body waves, elastic waves, Mohorovicic discontinuity, P-waves, receiver functions, seismic networks, seismic waves, United States, USArray
Citation
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Source
Seismological Research Letters
Type
Journal article
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Access Statement
Open Access
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Restricted until
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