Development of a Novel, Near Real Time Approach to Geothermal Seismic Exploration and Monitoring Via Ambient Seismic Noise Interferometry
A new, cost effective and non-invasive exploration method using ambient seismic noise was developed and tested with promising results. The general objectives of the project were to (1) build and test a new-generation seismic system that is capable of acquiring, transmitting, and processing seismic data in near-real-time, and (2) apply the new technology in a geothermal field setting. The intent of the latter objective was to investigate opportunities for adapting survey acquisition parameters provided by near-real-time data processing. The project had two Budget Periods; in Budget Period (Phase) 1 we designed, built, and tested a 20-node array, in Budget Period (Phase) 2 we scaled up to 144 nodes and greater aperture. We demonstrated that the larger array was able to perform its data acquisition, handling, telemetry, and processing functions successfully, so the advantages of real-time, in-field processing were realized. These advantages include continuous assessment of results and opportunities to re-deploy stations in more optimal configurations depending upon characteristics of the ambient noise field, and options to leave the array in place longer (or shorter) than originally planned and high levels of confidence that survey objectives have been achieved before the decision is made to demobilize the array. We also made progress in developing strategies for evaluating Green’s function convergence and in applying a technique (double beamforming) that ensures the most accurate velocity estimates in the shortest deployment duration.
- Research Organization:
- Baylor Univ., Waco, TX (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Geothermal Technologies Office
- DOE Contract Number:
- EE0007699
- OSTI ID:
- 1648329
- Report Number(s):
- DE-EE0007699
- Country of Publication:
- United States
- Language:
- English
Similar Records
Towards real-time assessment of convergence criteria in seismic interferometry: Selective stacking of cross-correlations at the San Emidio geothermal field
Final Scientific Report, Integrated Seismic Event Detection and Location by Advanced Array Processing