Direct Evidence of a Slow-Slip Transient Modulating the Spatiotemporal and Frequency-Magnitude Earthquake Distribution: Insights From the Armutlu Peninsula, Northwestern Turkey

被引：2

作者：

Bocchini, G. M. ^{[1
]}

Martinez-Garzon, P. ^{[2
]}

Verdecchia, A. ^{[1
]}

Harrington, R. M. ^{[1
]}

Bohnhoff, M. ^{[2
,3
]}

Turkmen, T. ^{[4
]}

Nurlu, M. ^{[4
]}

机构：

[1] Ruhr Univ Bochum, Fac Geosci, Inst Geol Mineral & Geophys, Bochum, Germany

[2] Helmholtz Ctr Potsdam GFZ German Res Ctr Geosci G, Potsdam, Germany

[3] Free Univ Berlin, Inst Geol Sci, Berlin, Germany

[4] AFAD Turkish Disaster Management Presidency, Ankara, Turkey

来源：

GEOPHYSICAL RESEARCH LETTERS | 2022年 / 49卷 / 18期

关键词：

microseismicity; enhanced catalog; near-fault monitoring; seismic-aseismic deformation; slow-slip transient; SIZE DISTRIBUTION; B-VALUE; STRESS; FAULT; SEA; CLUSTERS; RUPTURE; EVENTS; CREEP; EAST;

D O I：

10.1029/2022GL099077

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Earthquakes and slow-slip events interact, however, detailed studies investigating their interplay are still limited. We generate the highest resolution microseismicity catalog to date for the northern Armutlu Peninsula in a similar to 1-year period to perform a detailed seismicity distribution analysis and correlate the results with a local, geodetically observed slow-slip transient within the same period. Seismicity shows a transition of cluster-type behavior from swarm-like to burst-like, accompanied by an increasing relative proportion of clustered (non-Poissonian) relative to background (Poissonian) seismicity and gradually decreasing b-value as the geodetically observed slow-slip transient ends. The observed slow-slip transient decay correlates with gradually increasing effective-stress-drop values. The observed correlation between the b-value and geodetic transient highlights the influence of aseismic deformation on seismic deformation and the impact of slow-slip transients on local seismic hazard.

引用

页数：12