Title: |
Subsurface Seismic Structure Around the Sanford Underground Research Facility |
Authors: |
Chengping Chai, Monica MACEIRA, Hector J. SANTOS-VILLALOBOS, EGS Collab Team |
Key Words: |
3D seismic structure, joint inversion, Black Hills, SURF, EGS Collab |
Conference: |
Stanford Geothermal Workshop |
Year: |
2019 |
Session: |
EGS Collab |
Language: |
English |
Paper Number: |
Maceira |
File Size: |
1962 KB |
View File: |
|
To address the fundamental challenges of understanding processes associated with enhanced or engineered geothermal systems (EGS), teams from the EGS Collab SIGMA-V project are conducting stimulations at the Sanford Underground Research Facility. Various modalities of geophysical observations are collected and analyzed, and different types of parameters are modeled to help investigate these critical processes. Among these parameters, the three-dimensional stress field is one of the primary objectives. Seismic velocity models have been used to estimate the 3D stress field for other regions. A detailed seismic velocities and density model can help us infer spatial variations of the stress field in the study area. We inverted the 3D seismic structure around the site by using body-wave travel times, surface-wave dispersions and gravity observations simultaneously. The resulting model will be a starting point for more detailed investigations and could also be used to study subsurface geological and stress field variations of the broad area.
Press the Back button in your browser, or search again.
Copyright 2019, Stanford Geothermal Program: Readers who download papers from this site should honor the copyright of the original authors and may not copy or distribute the work further without the permission of the original publisher.
Attend the nwxt Stanford Geothermal Workshop,
click here for details.