Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.2102338118 |
Widespread deep seismicity in the Delaware Basin, Texas, is mainly driven by shallow wastewater injection | |
Guang Zhai; Manoochehr Shirzaei; Michael Manga | |
2021-05-18 | |
发表期刊 | Proceedings of the National Academy of Science
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出版年 | 2021 |
英文摘要 | Industrial activity away from plate boundaries can induce earthquakes and has evolved into a global issue. Much of the induced seismicity in the United States' midcontinent is attributed to a direct pressure increase from deep wastewater disposal. This mechanism is not applicable where deep basement faults are hydraulically isolated from shallow injection aquifers, leading to a debate about the mechanisms for induced seismicity. Here, we compile industrial, seismic, geodetic, and geological data within the Delaware Basin, western Texas, and calculate stress and pressure changes at seismogenic depth using a coupled poroelastic model. We show that the widespread deep seismicity is mainly driven by shallow wastewater injection through the transmission of poroelastic stresses assuming that unfractured shales are hydraulic barriers over decadal time scales. A zone of seismic quiescence to the north, where injection-induced stress changes would promote seismicity, suggests a regional tectonic control on the occurrence of induced earthquakes. Comparing the poroelastic responses from injection and extraction operations, we find that the basement stress is most sensitive to shallow reservoir hydrogeological parameters, particularly hydraulic diffusivity. These results demonstrate that intraplate seismicity can be caused by shallow human activities that poroelastically perturb stresses at hydraulically isolated seismogenic depths, with impacts on seismicity that are preconditioned by regional tectonics. |
领域 | 地球科学 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/326770 |
专题 | 地球科学 |
推荐引用方式 GB/T 7714 | Guang Zhai,Manoochehr Shirzaei,Michael Manga. Widespread deep seismicity in the Delaware Basin, Texas, is mainly driven by shallow wastewater injection[J]. Proceedings of the National Academy of Science,2021. |
APA | Guang Zhai,Manoochehr Shirzaei,&Michael Manga.(2021).Widespread deep seismicity in the Delaware Basin, Texas, is mainly driven by shallow wastewater injection.Proceedings of the National Academy of Science. |
MLA | Guang Zhai,et al."Widespread deep seismicity in the Delaware Basin, Texas, is mainly driven by shallow wastewater injection".Proceedings of the National Academy of Science (2021). |
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