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Slip Rates and Seismic Potential Along Main Faults in the Eastern Mediterranean and Caucasus from dense GPS Observations and Seismic Data
Ahadov, Bahruz1,2,3,4; Jin, Shuanggen1
2021
Source PublicationPURE AND APPLIED GEOPHYSICS
ISSN0033-4553
Volume178Issue:1Pages:39-54
AbstractThe Eastern Mediterranean and Caucasus regions are two of the most seismically active deforming continental regions. Monitoring and studies of the extensive deformation processes in this comparatively limited region enhance our understanding of the continental collision in the region. In this paper, we built a new elastic block model to constrain present-day plate motions and regional deformation in the intraplate zone and estimate fault slip rates from a dense global positioning system (GPS) velocity field. We additionally considered differences in moment accumulation rate per unit fault length using seismogenic and geodetic depth along the main faults. The right-lateral slip rates were estimated at between 24.33 +/- 0.47 and 28 +/- 0.5 mm/year along the North Anatolian Fault Zone (NAFZ) and the left-lateral slip at 10.6 +/- 0.9 to 12 +/- 1 mm/year on the East Anatolian Fault Zone (EAFZ). The Dead Sea Transform Fault (DSTF) slip rate ranges between 4.1 +/- 0.95 and 6 +/- 1 mm/year. The slip rate for the Main Caucasus Thrust Fault (MCTF) is 6.5 +/- 0.2 to 14.3 +/- 0.7 mm/year from west to the east. A shallow locking depth of 9 +/- 3.2 km was found in the Marmara region. The locking depth along the DSTF is 10.9 +/- 5.5 km in the northern segment, 9 +/- 6.7 km in the central section and 11.8 +/- 4 km in the southern section. The locking depth of the EAFZ is 16.7 +/- 4.4 km in the northern segment, 19.8 +/- 7.4 km in the middle segment and 12.5 +/- 4.2 km in the southern segment. The locking depths along the MCTF range between 12.7 +/- 5.8 and 17.8 +/- 4.9 km from west to east. Our new block model has the best fit to the observed velocities. The results provide an overall understanding of fault activity and have implications for the earthquake hazard along the main faults in the region.
KeywordBlock model slip rate seismic potential GPS Eastern Mediterranean Caucasus
DOI10.1007/s00024-020-02643-5
WOS KeywordDEAD-SEA FAULT ; POSITIONING SYSTEM MEASUREMENTS ; CRUSTAL DEFORMATION ; ACTIVE TECTONICS ; ANATOLIAN FAULT ; GEODETIC DETERMINATION ; STRAIN ACCUMULATION ; PLATE KINEMATICS ; BLOCK ; CONSTRAINTS
Language英语
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000606828400010
PublisherSPRINGER BASEL AG
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/79907
Collection中国科学院国家天文台
Corresponding AuthorJin, Shuanggen
Affiliation1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Azerbaijan Natl Acad Sci, Inst Geol & Geophys, Baku 1143, Azerbaijan
4.Peking Univ, Sch Earth & Space Sci, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
Ahadov, Bahruz,Jin, Shuanggen. Slip Rates and Seismic Potential Along Main Faults in the Eastern Mediterranean and Caucasus from dense GPS Observations and Seismic Data[J]. PURE AND APPLIED GEOPHYSICS,2021,178(1):39-54.
APA Ahadov, Bahruz,&Jin, Shuanggen.(2021).Slip Rates and Seismic Potential Along Main Faults in the Eastern Mediterranean and Caucasus from dense GPS Observations and Seismic Data.PURE AND APPLIED GEOPHYSICS,178(1),39-54.
MLA Ahadov, Bahruz,et al."Slip Rates and Seismic Potential Along Main Faults in the Eastern Mediterranean and Caucasus from dense GPS Observations and Seismic Data".PURE AND APPLIED GEOPHYSICS 178.1(2021):39-54.
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