Towards Adjoint Tomography of Northern Alaska
Northern Alaska features diffuse seismicity and large-scale deformation far from the plate boundaries. However, the structures and processes involved are not well understood. Due to its remoteness, northern Alaska has exhibited historically sparse coverage, resulting in difficulties in mapping and monitoring in this region. This has changed following the deployment of the EarthScope Transportable Array in Alaska, with years of high quality seismic data now available for a comprehensive study. In this study we investigate deformation and structure in northern Alaska using adjoint tomography, a seismic imaging method that minimizes differences between observed and synthetic seismograms to generate high-resolution images of Earth structure. The result of this tomographic study is expected to yield structural models of the subsurface which can then be used to refine earthquake catalogs and perform detailed interpretations of tectonic processes in and around northeastern Alaska. We present ongoing research and preliminary findings related to the tomographic imaging portion of this research.
Session: Crustal Deformation and Seismic Hazard in Western Canada, Cascadia and Alaska
Type: Oral
Room: 204
Date: 4/20/2023
Presentation Time: 09:00 AM (local time)
Presenting Author: Bryant Chow
Student Presenter: No
Additional Authors
Bryant Chow Presenting Author Corresponding Author bhchow@alaska.edu University of Alaska Fairbanks |
Carl Tape ctape@alaska.edu University of Alaska Fairbanks |
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Towards Adjoint Tomography of Northern Alaska
Category
Crustal Deformation and Seismic Hazard in Western Canada, Cascadia and Alaska
Description