Coseismic Kinematics of the 2023 Kahramanmaras, Turkey Earthquake Sequence From InSAR and Optical Data

He, Lijia; Feng, Guangcai; Xu, Wenbin; Wang, Yuedong; Xiong, Zhiqiang; Gao, Hua; Liu, Xiaoge

doi:10.1029/2023gl104693

Cited by 17 publications

(4 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Asperity II was located close to the epicenter on the EAF fault plane, and part of its slip area was connected with Asperity I on the splay fault. This slip area has been found in other studies on the finite-fault source model [10][11][12]14,[16][17][18][19][20] . The maximum slip exceeded 3.5 m, mainly strike-slip with rake approximately ± 10°.…”

Section: Spatial and Temporal Slip Distributionsupporting

confidence: 75%

“…The slip area extended to the shallow fault with an extremely large surface rupture of about 5.0 m. The slip was mainly strike-slip with some upward movement (rake approximately 5°) near the surface. This large slip zone has been discussed in most of the source studies [10][11][12]14,16,[18][19][20] . Asperity IV was located in the southwestern part of the EAF fault plane.…”

Section: Spatial and Temporal Slip Distributionmentioning

confidence: 99%

See 1 more Smart Citation

Abnormal apparent supershear rupture with discontinuous jumping propagation during the 2023 Türkiye M7.8 earthquake

Lee,

Liu,

Lin

2024

Commun Earth Environ

View full text Add to dashboard Cite

Earthquake ruptures along a single fault or along a connected system of faults are generally assumed to progress continuously. However, our analysis of the 2023 M7.8 Türkiye earthquake, using finite-fault joint source inversion, uncovered the occurrence of discontinuous rupture jumps. The main fault area adjacent to the splay fault where the earthquake started, and the deeper portion of the northeastern main fault segment exhibited triggered slip before the main rupture front arrived. Through seismic centroid analysis and finite-fault inversion, we estimated apparent rupture speeds within these slip patches reach approximately 6.0 km s-1, exceeding local S-wave velocity. The dynamic triggering mechanism induced the jumping rupture in these areas, resulting in an apparent rupture velocity surpassing the local shear wave velocity. These findings demonstrate the importance of dynamic triggering in adjacent fault systems during large earthquakes, influencing the extent and complexity of rupture propagation.

show abstract

Section: Spatial and Temporal Slip Distributionsupporting

confidence: 75%

Section: Spatial and Temporal Slip Distributionmentioning

confidence: 99%

Abnormal apparent supershear rupture with discontinuous jumping propagation during the 2023 Türkiye M7.8 earthquake

Lee,

Liu,

Lin

2024

Commun Earth Environ

View full text Add to dashboard Cite

show abstract

“…The interferograms were processed through topographic phase removal by the 1 arc-second SRTM DEM, noise reduction by the adaptive Goldstein filtering, and phase unwrapping by the Minimum Cost Flow method. Then, the phase ramp of each interferogram was removed by polynomial fitting [27]. The interferometric phase φ of each pixel can be expressed as (1).…”

Section: A Average Deformation Rate Estimationmentioning

confidence: 99%

Reactivation/Acceleration of Landslides Caused by the 2018 Baige Landslide-Dammed Lake and its Breach Floods Revealed by InSAR and Optical Images

Xiong,

Feng,

et al. 2024

IEEE J. Sel. Top. Appl. Earth Observations Remote Sensing

Self Cite

View full text Add to dashboard Cite

Landslide-dammed lakes and their breaches can reactivate/accelerate landslides, causing potential damages. However, in the absence of displacement observations, the spatialtemporal deformation patterns of the landslide-dammed lakes and associated floods reactivated/accelerated landslides remain underexplored. In this study, we use the 2018 Baige landslidedammed lake and associated floods reactivated/accelerated landslides to investigate the behaviors of such landslides. We first use an improved interferograms Stacking method to detect landslides, then utilize the multi-temporal interferometric synthetic aperture radar (MT-InSAR) to derive their deformation history. Through retrospective analysis of the deformation history and optical images, we find that the water level fluctuations and floods caused by the Baige landslide-dammed lake and its breaches reactivated/accelerated 6 landslides upstream and 5 landslides downstream. The area of the largest reactivated/accelerated landslide is about 5 km 2 . The maximum velocity change of these reactivated/accelerated landslides is about 20 cm/year. Landslide reactivation/acceleration occurs progressively from the toe to head, resulting in varying reactivation/acceleration times for different parts. The velocity change and acceleration area have a linear relationship, with larger landslides showing larger velocity changes and prolonged activity than smaller ones. Among these 11 reactivated/accelerated landslides, 4 are located in the river narrow sections and their volumes are all larger than that of the Baige landslide. Thus, their failure may cause larger damages than that caused by the Baige landslide. Our findings contribute to a better understanding of landslide-induced geological hazard chains and landslide behaviors.

show abstract

“…About 9 h later, the M W 7.5 Elbistan earthquake occurred, with the epicenter located at (38.011 • N, 37.196 • E), and a focal depth of 13.5 km. The Elbistan earthquake damaged the Cardak fault (CF) and Do ganşehir fault (DF) [1], with a rupture length of 180 km. Thousands of homes were damaged, and the death toll in Turkey and Syria exceeded 50,000 [2].…”

Section: Introductionmentioning

confidence: 99%

Coseismic Slip Distribution and Coulomb Stress Change of the 2023 MW 7.8 Pazarcik and MW 7.5 Elbistan Earthquakes in Turkey

Dai,

Liu,

Liu

et al. 2024

Remote Sensing

View full text Add to dashboard Cite

On 6 February 2023, the MW 7.8 Pazarcik and the MW 7.5 Elbistan earthquakes occurred in southeastern Turkey, close to the Syrian border, causing many deaths and a great deal of property destruction. The Pazarcik earthquake mainly damaged the East Anatolian Fault Zone (EAFZ). The Elbistan earthquake mainly damaged the Cardak fault (CF) and the Doğanşehir fault (DF). In this study, Sentinel-1A ascending (ASC) and descending (DES) orbit image data and pixel offset tracking (POT) were used to derive surface deformation fields in the range and azimuth directions induced by the Pazarcik and Elbistan earthquakes (hereinafter referred to as the Turkey double earthquakes). Utilizing GPS coordinate sequence data, we computed the three-dimensional surface deformation resulting from the Turkey double earthquakes. The surface deformation InSAR and GPS results were combined to invert the coseismic slip distribution of the EAFZ, CF, and DF using a layered earth model. The results show that the coseismic ruptures of the Turkey double earthquakes were dominated by left-lateral strike-slips. The maximum slip was 7.76 m on the EAFZ and about 8.2 m on the CF. Both the earthquakes ruptured the surface. The Coulomb failure stress (CFS) was computed based on the fault slip distribution and the geometric parameters of all the active faults within 300 km of the MW 7.8 Pazarcik earthquake’s epicenter. The CFS change resulting from the Pazarcik earthquake suggests that the subsequent Elbistan earthquake was triggered by the Pazarcik earthquake. The Antakya fault experienced an increase in CFS of 8.4 bars during this double-earthquake event. Therefore, the MW 6.3 Uzunbağ earthquake on 20 February 2023 was jointly influenced by the Turkey double earthquakes. Through stress analysis of all the active faults within 300 km of the MW 7.8 Pazarcik earthquake’s epicenter, the Ecemis segment, Camliyayla fault, Aadag fault, Ayvali fault, and Pula segment were all found to be under stress loading. Particularly, the Ayvali fault and Pula segment exhibited conspicuous stress loading, signaling a higher risk of future seismic activity.

show abstract

Coseismic Kinematics of the 2023 Kahramanmaras, Turkey Earthquake Sequence From InSAR and Optical Data

Cited by 17 publications

References 47 publications

Abnormal apparent supershear rupture with discontinuous jumping propagation during the 2023 Türkiye M7.8 earthquake

Abnormal apparent supershear rupture with discontinuous jumping propagation during the 2023 Türkiye M7.8 earthquake

Reactivation/Acceleration of Landslides Caused by the 2018 Baige Landslide-Dammed Lake and its Breach Floods Revealed by InSAR and Optical Images

Coseismic Slip Distribution and Coulomb Stress Change of the 2023 MW 7.8 Pazarcik and MW 7.5 Elbistan Earthquakes in Turkey

Contact Info

Product

Resources

About