气候变化领域集成服务门户(CCPortal): Physics-Based Earthquake Simulations in Slow-Moving Faults: A Case Study From the Eastern Betic Shear Zone (SE Iberian Peninsula)

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DOI	10.1029/2020JB021133
	Physics-Based Earthquake Simulations in Slow-Moving Faults: A Case Study From the Eastern Betic Shear Zone (SE Iberian Peninsula)
	Herrero-Barbero P.; Álvarez-Gómez J.A.; Williams C.; Villamor P.; Insua-Arévalo J.M.; Alonso-Henar J.; Martínez-Díaz J.J.
发表日期	2021
ISSN	21699313
卷号	126 期号:5
英文摘要	In regions with slow-moving faults, the incompleteness of earthquake and fault data complicates the study of seismic hazard. The instrumental and historical seismic catalogs cover a short period compared with the long-time interval between major events. Paleoseismic evidence allows us to increase the time frame of actual observations, but data is still scarce and imprecise. Physics-based earthquake simulations overcome the limitations of actual earthquake catalogs and generate long-term synthetic seismicity. The RSQSim earthquake simulator used in our study reproduces the earthquake physical processes based on a 3D fault model that contains the kinematics, the long-term slip rates and the rate-and-state friction properties of the main seismogenic sources of a region. The application of earthquake simulations to the Eastern Betic Shear Zone, a slow fault system at southeastern Spain, allows the compilation of 100 kyr-synthetic catalogs of MW > 4.0 events. Multisection earthquakes and complete ruptures of some faults in this region, preferentially on strike-slip dominant ruptures, are possible according to our simulations. The largest MW > 6.5 events are likely as a result of jumping ruptures between the Carboneras and the Palomares faults, with recurrence times of < 20,000 years; and less frequently between the Alhama de Murcia and the Los Tollos faults. A great variability of interevent times is observed between successive synthetic seismic cycles, in addition to the occurrence of complex co-ruptures between faults. Consequently, the occurrence of larger earthquakes, even MW ≥ 7.0, cannot be ruled out, contrasting with the low to moderate magnitudes recorded in the instrumental and historical earthquake catalog. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	Eastern Betic Shear Zone; physics-based earthquake simulator; rate-and-state friction law; seismic hazard; slow-moving faults; synthetic seismicity
语种	英语
来源期刊	Journal of Geophysical Research: Solid Earth
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/187134
作者单位	Department of Geodynamics, Stratigraphy and Paleontology, Universidad Complutense de Madrid, Madrid, Spain; GNS Science, Lower Hutt, New Zealand; Geosciences Institute (UCM-CSIC), Madrid, Spain
推荐引用方式 GB/T 7714	Herrero-Barbero P.,Álvarez-Gómez J.A.,Williams C.,et al. Physics-Based Earthquake Simulations in Slow-Moving Faults: A Case Study From the Eastern Betic Shear Zone (SE Iberian Peninsula)[J],2021,126(5).
APA	Herrero-Barbero P..,Álvarez-Gómez J.A..,Williams C..,Villamor P..,Insua-Arévalo J.M..,...&Martínez-Díaz J.J..(2021).Physics-Based Earthquake Simulations in Slow-Moving Faults: A Case Study From the Eastern Betic Shear Zone (SE Iberian Peninsula).Journal of Geophysical Research: Solid Earth,126(5).
MLA	Herrero-Barbero P.,et al."Physics-Based Earthquake Simulations in Slow-Moving Faults: A Case Study From the Eastern Betic Shear Zone (SE Iberian Peninsula)".Journal of Geophysical Research: Solid Earth 126.5(2021).