My primary research interest is geophysical imaging
Dense Seismic Tomography for Cascadia Subduction Zone
In the summer of 2021 a team of 30 people have installed over 700 seismometer nodes along the Cascadia Subduction Zone. During the course of 1 month of deployment, the receivers picked both earthquake data and active seismic shot from Oregon and Washington offshore. This project is a joint venture of University of Oregon, Oregon State University, University of Washington and South Dakota School of Mines.
I am currently working with Dr. Emilie Hooft for analyzing the picked up data and building a refraction model in the Southern part of Oregon.
Shot gather for one near shore receiver
Design of the entire experiment
Integrated Geophysical Analysis on Cascadia Subduction Zone
For this project I have worked with Dr. Irina Filina from University of Nebraska-Lincoln where we have developed two 2-D plate-scale integrated models and several smaller 2.75-D models for the Cascadia Subduction Zone. We have also performed spatial analysis with potential field data from which we have identified some new structures that may be responsible for weakening the crusts.
~~ Stay tuned for the publications -->
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1. Ashraf, A., Filina, I., (2021), Crustal densities of propagator wakes of the Juan de Fuca plate from gravity modeling (in review)
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2. Ashraf, A., Filina, I., (2021), 2-D plate scale integrated plate-scale models extending from Juan de Fuca ridge to Cascadia Subduction Zone (in preparation)
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3. Ashraf, A., Filina, I., (2021), Mapping crustal structures of the Juan de Fuca plate and assessing their implications in the generated seismicity over the Cascadia Subduction Zone (in preparation)
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Conference Presentations:
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--to be added--
Electrical Resistivity Tomography
Comprehensive assessment of saltwater intrusion dynamics with its plausible future consequences concerning climate change in Cox's Bazar, Bangladesh utilizing time-lapse electrical resistivity tomography
- Received funding of 2500$ from Government of Bangladesh through Faculty of Earth and Environmental Science, University of Dhaka
- Abstract got accepted in 2019 GSA Annual Meeting for an oral presentation Geological Society of America
(Abstracts with Programs. Vol. 51, No. 5 doi: 10.1130/abs/2019AM-340909)
One of the integrated model
