Advances in rotational seismic measurements
| Autor: | Darren Laughlin, Bob Pierson, Robert H. Brune |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010504 meteorology & atmospheric sciences
Rotation around a fixed axis Geophone Induced seismicity 010502 geochemistry & geophysics 01 natural sciences Seismic wave Physics::Geophysics Broadband Magnetohydrodynamic drive Magnetohydrodynamics Geothermal gradient Seismology Geology 0105 earth and related environmental sciences |
| Zdroj: | SEG Technical Program Expanded Abstracts 2016. |
| DOI: | 10.1190/segam2016-13956985.1 |
| Popis: | Rotational motion is increasingly understood to be a significant part of seismic wave motion. Rotations can be important in earthquake strong motion and in Induced Seismicity Monitoring. Rotational seismic data can also enable shear selectivity and improve wavefield sampling for vertical geophones in 3D surveys, among other applications. However, sensor technology has been a limiting factor to date. The US Department of Energy (DOE) and Applied Technology Associates (ATA) are funding a multi-year project that is now entering Phase 2 to develop and deploy a new generation of rotational sensors for validation of rotational seismic applications. Initial focus is on induced seismicity monitoring, particularly for Enhanced Geothermal Systems (EGS) with fracturing. The sensors employ Magnetohydrodynamic (MHD) principles with broadband response, improved noise floors, robustness, and repeatability. This paper presents a summary of Phase 1 results and Phase 2 status. |
| Databáze: | OpenAIRE |
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