期刊
SCIENCE
卷 353, 期 6306, 页码 1416-1419出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aag0262
关键词
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资金
- Canadian Space Agency [5226]
- U.S. Geological Survey [G13AP00040]
- Natural Sciences and Engineering Research Council of Canada
- Stanford Center for Induced and Triggered Seismicity
- U.S. NSF [EAR-1344424]
- UK Natural Environment Research Council [NE/K011006/1]
- Directorate For Geosciences
- Division Of Earth Sciences [1344424, 1344441] Funding Source: National Science Foundation
- Natural Environment Research Council [come30001] Funding Source: researchfish
- NERC [come30001] Funding Source: UKRI
Observations that unequivocally link seismicity and wastewater injection are scarce. Here we show that wastewater injection in eastern Texas causes uplift, detectable in radar interferometric data up to >8 kilometers from the wells. Using measurements of uplift, reported injection data, and a poroelastic model, we computed the crustal strain and pore pressure. We infer that an increase of >1 megapascal in pore pressure in rocks with low compressibility triggers earthquakes, including the 4.8-moment magnitude event that occurred on 17 May 2012, the largest earthquake recorded in eastern Texas. Seismic activity increased even while injection rates declined, owing to diffusion of pore pressure from earlier periods with higher injection rates. Induced seismicity potential is suppressed where tight confining formations prevent pore pressure from propagating into crystalline basement rocks.
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