Article
Geochemistry & Geophysics
Ping He, Yangmao Wen, Shuiping Li, Kaihua Ding, Zhicai Li, Caijun Xu
Summary: The Tien Shan is the largest and most active intracontinental orogenic belt on Earth, providing a natural laboratory for understanding Cenozoic orogenic processes driven by the India-Asia collision. A Mw 6.1 earthquake that struck the Kalpin region on January 19, 2020 has highlighted the ongoing orogenic processes and potential seismic hazard in the area. Analysis of geodetic observations has revealed a nearly subhorizontal decollement plane in the region, indicating a risk of frequent moderate earthquakes in the future.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2021)
Article
Geochemistry & Geophysics
Sandra Slead, Meng (Matt) Wei
Summary: Interferometric Synthetic Aperture Radar (InSAR) is used to measure ground deformation caused by underground nuclear testing, and a finite-element model (FEM) is presented to analyze the nuclear test site in North Korea using InSAR data. The model incorporates topography, mechanical heterogeneity and simulates elastic deformation caused by underground explosions. Results show that mechanical layering has a significant impact on deformation modeling. A parameter search is performed to estimate the yield and depth of burial for the 4th nuclear test in North Korea. The study provides an independent and complementary method for estimating yield in data-limited regions.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2022)
Article
Geochemistry & Geophysics
Meng Zhu, Qiming Zeng, Jian Jiao
Summary: This study emphasizes the importance of assessing the impact of InSAR ionospheric and tropospheric corrections on underground nuclear explosion modeling. A case study on the 4th North Korea (NKT-4) underground nuclear test was conducted using ALOS-2 liters-band SAR images, revealing the significance of atmospheric corrections on InSAR analysis. The research findings highlight the need for thorough investigation and quantitative assessment of atmospheric effects in InSAR focal mechanism solutions.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2021)
Article
Environmental Sciences
Maurizio Battaglia, Carolina Pagli, Stefano Meuti
Summary: Research on the subsidence of Dallol volcano suggests that the most likely explanation is a combination of outgassing, cooling, and contraction of a shallow crustal magma chamber or hydrothermal system. The subsidence began in October 2008 and continued at a rate of up to 10 cm/year until at least February 2010.
Article
Geochemistry & Geophysics
Xiaohang Wang, Caijun Xu, Zhuohui Xiao, Ying Peng
Summary: This study investigates the earthquake sequence in Lombok, Indonesia using satellite radar images and finds that the surface deformation is mainly uplift without surface rupture. It suggests that the Lombok sequence may have ruptured the Flores thrust and the magmatic plumbing systems of Rinjani volcano played a critical role in the fault rupture. Additionally, it identifies a seismic gap in the northern part of the Sumbawa region.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2022)
Article
Geochemistry & Geophysics
D. W. Vasco, Sergey Samsonov, Kang Wang, Roland Burgmann, Pierre Jeanne, William Foxall, Yingqi Zhang
Summary: This study uses InSAR observations to estimate the displacements at a natural gas storage site in Honor Rancho, California. By removing the reservoir signal, the residuals are used to characterize the background variations and identify anomalies. The results show temporal and spatial variations in the residuals, with larger displacements observed in a southern alluvial valley.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2022)
Article
Geochemistry & Geophysics
D. W. Vasco, Sergey Samsonov, Kang Wang, Roland Burgmann, Pierre Jeanne, William Foxall, Yingqi Zhang
Summary: The study utilizes InSAR observations for estimating line-of-sight displacements, showing potential value in characterizing surface deformation background and detecting unusually large residuals.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2021)
Article
Geochemistry & Geophysics
Hailu Chen, Yunzhong Shen
Summary: In this study, a new approach is proposed to improve the quality of InSAR interferograms by incorporating GNSS data and modeling SCEs as signals. The LSC-GInSAR approach effectively mitigates SCEs and produces displacements that are more consistent with GNSS observations compared to the GInSAR method, resulting in a significant improvement in quality.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2023)
Article
Remote Sensing
Simone Atzori, Fernando Monterroso, Andrea Antonioli, Claudio De Luca, Nikos Svigkas, Francesco Casu, Michele Manunta, Matteo Quintiliani, Riccardo Lanari
Summary: This work describes the implementation of a processing chain for fully automatic modeling of seismic source parameters and slip distribution using InSAR displacements. The chain involves a series of steps and algorithms, including dataset selection, area definition, image sampling, and inversions for source geometry and slip distribution. The procedures have been developed and tested using 100 globally distributed events, ranging from magnitude 5.5 to 8.2, covering a wide range of mechanisms and tectonic contexts. The aim is to provide real-time solutions during the emergency phase, which can be validated by experts and used for operational purposes and initial scientific analyses.
INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION
(2023)
Article
Geochemistry & Geophysics
Nematollah Ghayournajarkar, Yo Fukushima
Summary: Earthquake source parameters are vital for assessing seismic hazard. Sparse seismic monitoring networks in many countries result in relatively low accuracy of earthquake source parameters. InSAR is a useful tool for accurately determining fault parameters of shallow inland earthquakes. This study compares the fault parameters obtained from InSAR with those derived from local and global seismic data to evaluate the credibility of earthquake catalogs. The results show differences in the accuracy of earthquake catalogs between Iran and Japan.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2022)
Article
Geochemistry & Geophysics
Wenyu Gong, Xiaogang Song, Yingfeng Zhang, Jun Hua, Haoyue Sun, Dezheng Zhao, Chuanhua Zhu, Xianjian Shan
Summary: This study used InSAR technology to conduct geological measurements in the Daliangshan area, and found the presence of three major faults involved in left-lateral strike-slip motion. By inverting the model, the movement parameters of these faults were determined. The study also confirmed the strong deformation in the middle section of the Daliangshan fault.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2023)
Article
Engineering, Aerospace
Bingquan Han, Chengsheng Yang, Zhenhong Li, Chen Yu, Chaoying Zhao, Qin Zhang
Summary: The coseismic and postseismic deformation caused by the Petermann earthquake in the Northern Territory of Australia have been determined using satellite images. The earthquake ruptured in the NNW direction with a magnitude of Mw 6.06, and the postseismic deformation showed a gradually decaying trend with a maximum displacement of 5.4 cm within 858 days.
ADVANCES IN SPACE RESEARCH
(2022)
Article
Geochemistry & Geophysics
Hidayat Panuntun
Summary: This study used Sentinel-1 InSAR data to investigate the source model of the 2019 Albania earthquake, finding that the earthquake slip was distributed in a narrow area at a depth of about 11 km with a maximum amplitude of around 0.89 m. The earthquake had a geodetic moment of 3.70 x 10^18 Nm, indicating a shear modulus of 40 GPa and an equivalent magnitude of Mw 6.31. The preferred slip model revealed an east-dipping fault with a dominant dip-slip motion mechanism.
Article
Geochemistry & Geophysics
Nikos Svigkas, Simone Atzori, Andrey Kozhurin, Cristiano Tolomei, Andrea Antonioli, Giuseppe Pezzo
Summary: On January 9, 2020, a M6.4 strike-slip earthquake occurred in the Bering Sea, north of the Asian margin. The earthquake revealed a previously unknown active fault with left-lateral kinematics, crossing the Khatyrka-Vyvenka fault zone. This fault structure, along with another similar structure to the east, has created a segmented, step-like boundary of the plate/stream.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Zeinab Golshadi, Nicola Angelo Famiglietti, Simone Atzori, Annamaria Vicari
Summary: This study used synthetic aperture radar (SAR) satellite images to investigate the surface effects of an earthquake in Iran. The InSAR technique was used to determine the source parameters and slip distribution of the earthquake. The results indicate that the earthquake occurred on a reverse fault extending NW-SE.
APPLIED SCIENCES-BASEL
(2022)
Article
Geochemistry & Geophysics
Lingyun Ji, Yaxuan Hu, Qingliang Wang, Xiaofeng Xu, Jing Xu
JOURNAL OF GEODYNAMICS
(2015)
Article
Environmental Sciences
Chuanjin Liu, Lingyun Ji, Liangyu Zhu, Chaoying Zhao
Article
Multidisciplinary Sciences
Ji LingYun, Xu JianDong, Lin XuDong, Luan Peng
CHINESE SCIENCE BULLETIN
(2010)
Article
Environmental Sciences
Lingyun Ji, Jiandong Xu, Qingliang Wang, Yuan Wan
JOURNAL OF APPLIED REMOTE SENSING
(2013)
Article
Geosciences, Multidisciplinary
Lingyun Ji, Zhong Lu, Daniel Dzurisin, Sergey Senyukov
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
(2013)