Involvement of Fluids in Earthquake Ruptures: Field/Experimental Data and Modeling
Involvement of Fluids in Earthquake Ruptures: Field/Experimental Data and Modeling
复制标题
流体参与地震破裂：现场/实验数据和建模
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
A. Tsutsumi
中科院分区：
文献类型：
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作者：
T. Yamashita;A. Tsutsumi
断裂带中的孔隙流体对地壳断裂过程有着重要的影响。调查的地质证据，流体参与地震断层在一定范围内的规模应提供有价值的限制断层建模，从而导致更好地了解地震发生的多样性。断层破裂过程中存在的流体的定量理解，在很大程度上依赖于地质数据来自详细的结构，岩石学和地球化学分析以及实验得出的结果。本章的主要目的是介绍地质和实验环境，其中流体参与地震的生成可能会被记录下来。在第1.1节中，介绍了由断层承载的矿脉记录的现场证据，作为与断层相关的流体压力周期性波动的可能指示。本文还介绍了高温流体参与地震断裂作用的地球化学证据的最新进展。第1.2节简要介绍了俯冲带浅部的流体来源。最后，1.3节总结了与流体在断层作用过程中的作用有关的实验研究。
It is widely accepted that pore fluids in fault zones have a significant influence on crustal faulting processes. Investigating the geological evidence for fluid involvement in earthquake faulting over a range of scales should provide valuable constraints on fault modeling and consequently lead to a better understanding of the diversity of earthquake occurrences. A quantitative understanding of fault rupture processes in the presence of fluid relies largely on geological data derived from detailed structural, petrological, and geochemical analyses as well as experimentally derived results. The main purpose of this chapter is to introduce the geological and experimental settings in which the involvement of fluids in the generation of earthquakes is likely to be recorded. In Sect. 1.1, field evidence recorded by fault-hosted veins is introduced as a possible indication of cyclic fluctuations in fluid pressure associated with faulting. Recent advances in our understanding of the geochemical evidence for the involvement of high-temperature fluids in earthquake faulting are also introduced. In Sect. 1.2, fluid sources within shallow part of subduction zones are introduced briefly. Finally, experimental studies relevant to the role of fluids in faulting processes are summarized in Sect. 1.3.