Article
Chemistry, Analytical
Guido Luzi, Pedro F. Espin-Lopez, Fermin Mira Perez, Oriol Monserrat, Michele Crosetto
Summary: The use of radar interferometric techniques in non-urban areas can be challenging due to the lack of stable natural targets, but this can be partially compensated by installing reference targets. Passive corner reflectors (PCRs) are effective but suffer from drawbacks like being cumbersome and weather-sensitive, while active reflectors (AR) provide a less cumbersome alternative with stable phase response. This paper describes the design, implementation, and testing of an AR prototype aimed at providing a fair performance/cost benefit in areas with hard accessibility.
Article
Geosciences, Multidisciplinary
Ajay Kumar, Mohamedharoon A. Shaikh, Sarabjeet Singh, Tejpal Singh, Soumyajit Mukherjee, Seema Singh
Summary: The tectonics of ancient foreland basins are important for both applied and theoretical geosciences. Through geomorphic and paleostress analysis, the principal stress directions during the Himalayan orogeny were reconstructed, and three deformation phases were determined. The NE-directed compression led to the uplift of the Himalayas and the formation of the present-day topography.
INTERNATIONAL JOURNAL OF EARTH SCIENCES
(2022)
Article
Environmental Sciences
Stephen Grebby, Andrew Sowter, Jon Gluyas, David Toll, David Gee, Ahmed Athab, Renoy Girindran
Summary: The catastrophic failure of a tailings dam in Brazil led to significant loss of lives and environmental damage. Advanced analysis of remote sensing data suggests that satellite-based monitoring techniques could help predict similar disasters in the future.
COMMUNICATIONS EARTH & ENVIRONMENT
(2021)
Article
Chemistry, Multidisciplinary
Ilias Lazos, Ioannis Papanikolaou, Sotirios Sboras, Michael Foumelis, Christos Pikridas
Summary: The Strymon basin in Northern Greece, a geodynamically active region, hosts active faults. Through GNSS and InSAR techniques, researchers analyzed crustal deformation and found results consistent with palaeoseismological surveys and active fault mapping.
APPLIED SCIENCES-BASEL
(2022)
Article
Geosciences, Multidisciplinary
Mohammad R. Ghassemi, Mahasa Roustaei
Summary: Emergent salt diapirs are highly mobile geological objects that pose important questions for geologists and engineers. By studying the Anguru diapir using InSAR time-series data, it is found that there is recent activity and movement in the area.
JOURNAL OF THE GEOLOGICAL SOCIETY
(2021)
Article
Geochemistry & Geophysics
Eutizio Vittori, Anna Maria Blumetti, Valerio Comerci, Pio Di Manna, Luigi Piccardi, Dashamir Gega, Ismail Hoxha
Summary: The earthquake that occurred on November 26, 2019 was the strongest in Albania in recent decades, causing damage with a intensity of VIII to IX EMS around Durres. The main environmental effects included uplift and liquefaction, with the rupture parameters indicating a reverse slip on a NW-SE trending plane. Historical earthquakes and the regional tectonic setting suggest that the last earthquake may not represent the actual maximum seismic and surface faulting hazards in northwestern Albania, calling for further detailed studies in the area.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2021)
Article
Environmental Sciences
Dyre Oliver Dammann, Mark A. Johnson, Emily R. Fedders, Andrew R. Mahoney, Charles L. Werner, Christopher M. Polashenski, Franz J. Meyer, Jennifer K. Hutchings
Summary: This study investigates the use of the Gamma portable radar interferometer (GPRI) to characterize sea ice displacement and surface topography. The GPRI is found to be best suited for deriving lateral surface deformation and identifying different dynamic regions. The study demonstrates the potential of GPRI in sea ice applications due to its high accuracy in resolving pre- and post-fracture deformation.
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
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
Geosciences, Multidisciplinary
Zhang Yunjun, Falk Amelung, Yosuke Aoki
Summary: This study utilizes radar images to measure ground surface deformation of the Kirishima volcanic complex, revealing deformation patterns and processes within Shinmoe-dake and Iwo-yama. By combining various analyses from different disciplines, the study sheds light on the hydrothermal activity and driving mechanisms of volcanic inflation and deflation. The research highlights the potential of InSAR time series in imaging complex hydrothermal systems.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Environmental Sciences
S. K. Pandita, Ahsan Ul Haq, G. M. Bhat, Yudhbir Singh, Arjun Singh
Summary: The study in Kishtwar region of Jammu and Kashmir, India, identified traces of active faults through geomorphic mapping, geological field investigations, and luminescence dating. Various tectonic landforms were mapped, indicating the presence of active extensional topography in the area. The active nature of faults was supported by dip-slip movement, fault scarp, and displacement in Holocene and recent sediments, confirmed with Ground Penetrating Radar survey.
ENVIRONMENTAL EARTH SCIENCES
(2021)
Article
Geochemistry & Geophysics
Mahin Jafari, Mahtab Aflaki, Zahra Mousavi, Andrea Walpersdorf, Khalil Motaghi
Summary: The Ganaveh earthquake occurred on April 18, 2021 in the southwest of the Dezful embayment, Iran. It was a mainly compressive event with a magnitude of M-w 5.8. The InSAR coseismic displacement maps showed a maximum surface displacement of 17 cm in the satellite line of sight. The earthquake occurred within the competent layers of the Zagros sedimentary cover, beneath the Gachsaran formation.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2023)
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
Environmental Sciences
Mengshi Yang, Ru Wang, Menghua Li, Mingsheng Liao
Summary: This study proposes a target characterization approach for multi-epoch InSAR post-processing to efficiently correlate the target's possible deformation types and corresponding characteristics. The approach is demonstrated on the metro network of Shanghai, China, showing its effectiveness in measuring displacements of Earth's surface over time.
REMOTE SENSING OF ENVIRONMENT
(2022)
Article
Geochemistry & Geophysics
Antonio Pepe, Pietro Mastro, Cathleen E. Jones
Summary: This article introduces an innovative space-time adaptive multilooking technique for sequence of differential synthetic aperture radar interferograms, based on directional statistics theory. The approach proposes a new method for the selection of statistically homogenous pixels, exclusively analyzing the multitemporal sequence of full resolution DInSAR interferograms, and demonstrates its effectiveness and simplicity.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2021)
Article
Geochemistry & Geophysics
Jiun-Yee Yen, Chih-Heng Lu, Rebecca J. Dorsey, Hao Kuo-Chen, Chung-Pai Chang, Chun-Chin Wang, Ray Y. Chuang, Yu-Ting Kuo, Chi-Yu Chiu, Yo-Ho Chang, Fabio Bovenga, Wen-Yen Chang
SEISMOLOGICAL RESEARCH LETTERS
(2019)
Article
Geochemistry & Geophysics
Yu-Ting Kuo, Yu Wang, James Hollingsworth, Shao-Yi Huang, Ray Y. Chuang, Chih-Heng Lu, Yi-Chun Hsu, Hsin Tung, Jiun-Yee Yen, Chung-Pai Chang
SEISMOLOGICAL RESEARCH LETTERS
(2019)
Article
Geosciences, Multidisciplinary
D. Sugawara, N. T. Yu, J. Y. Yen
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2019)
Article
Geosciences, Multidisciplinary
Shao-Yi Huang, Jiun-Yee Yen, Bo-Lin Wu, Nai-Wun Shih
Article
Geography, Physical
Neng-Ti Yu, Jiun-Yee Yen, I-Chin Yen, Kazuomi Hirakawa, Chao-Ming Chuang
QUATERNARY SCIENCE REVIEWS
(2020)
Article
Geochemistry & Geophysics
Yogendra Sharma, Sumanta Pasari, Kuo-En Ching, Onkar Dikshit, Teruyuki Kato, Javed N. Malik, Chung-Pai Chang, Jiun-Yee Yen
Article
Geography, Physical
Larry Syu-Heng Lai, Joshua J. Roering, Noah J. Finnegan, Rebecca J. Dorsey, Jiun-Yee Yen
Summary: The incision rate and steepness of bedrock channels are primarily controlled by coarse-sediment supply, while the bedrock properties on hillslopes in the source area influence channel steepness. Channel steepness is independent of rock uplift rate and annual precipitation, but systematically varies with sediment size, substrate strength, and sediment source rock in fluvial bedrock channels along the Coastal Range in eastern Taiwan. Models assuming a proportionality between incision rate and basal shear stress may not fully capture controls on fluvial channel profiles in landslide-dominated landscapes, where other processes such as bedload impacts and debris-flow scour may play significant roles in balancing rock uplift and incision.
EARTH SURFACE PROCESSES AND LANDFORMS
(2021)
Article
Geology
Larry Syu-Heng Lai, Rebecca J. Dorsey, Chorng-Shern Horng, Wen-Rong Chi, Kai-Shuan Shea, Jiun-Yee Yen
Summary: The study on the Lichi Melange in the Coastal Range of eastern Taiwan reveals a polygenetic origin with a variety of sedimentary mass-wasting deposits and tectonic shear zones. The eastward migration of submarine slope and the overlapping of sedimentary contacts provide evidence for the unique formation process of this melange, offering insights into the dynamics of rapid crustal mixing and tectonic recycling at a convergent continent-ocean interface.
SEDIMENTARY GEOLOGY
(2021)
Article
Environmental Sciences
Yi-An Chen, Chung-Pai Chang, Wei-Chia Hung, Jiun-Yee Yen, Chih-Heng Lu, Cheinway Hwang
Summary: Land subsidence is a significant global issue that can lead to increased flood risks, infrastructure damage, and economic losses. This study utilized multiple-sensor observations to analyze land subsidence in the Choushui River alluvial fan (CRAF) in Taiwan from 1993 to 2019, revealing significant subsidence in coastal areas and inland regions with high subsidence rates. The research also identified a new subsidence center along the Taiwan High Speed Rail with rates ranging from 30 to 70 mm/yr, and produced a map showing deep compaction distribution below 300 m depth in the CRAF.
Article
Geography, Physical
Neng-Ti Yu, Jiun-Yee Yen, I-Chin Yen, Mei-Fei Chu
Summary: This study reveals the occurrence of tsunamis and the drifting of pumice in the northern coast of Taiwan over the past few thousand years. Additionally, the research findings suggest that tsunamis in this region are characterized by complicated occurrences, as well as diverse sources and drifting routes for pumice.
QUATERNARY SCIENCE REVIEWS
(2022)
Article
Environmental Sciences
Larry Syu-Heng Lai, Rebecca J. Dorsey, Chorng-Shern Horng, Wen-Rong Chi, Kai-Shuan Shea, Jiun-Yee Yen
Summary: This study investigates marine deposits in the active arc-continent suture zone of eastern Taiwan, revealing short cycles of vertical crustal oscillations. The findings suggest that these oscillations may be characteristic of continental growth.
COMMUNICATIONS EARTH & ENVIRONMENT
(2022)
Article
Geosciences, Multidisciplinary
Jia-Hong Chen, Shyh-Jeng Chyi, Jiun-Yee Yen, Lih-Der Ho, Christopher Luethgens, Pei-Ling Wang, Li-Hung Lin, I-Chin Yen, Chia-Hung Jen, Jyh-Jaan Steven Huang
Summary: The fluvial landscape of the Hengchun Peninsula in southernmost Taiwan is characterized by narrow rivers and wide valley plains, which are unusual features in tectonically active areas like Taiwan. Research suggests that relative sea level changes have played a significant role in shaping this landscape since the last glacial period, particularly along the Gangkou River. The study indicates that the low uplift rates in this area have led to widespread aggradation after the last glaciation, followed by incision and the formation of terraces.
TERRESTRIAL ATMOSPHERIC AND OCEANIC SCIENCES
(2021)
Article
Geosciences, Multidisciplinary
Yi-Chun Hsu, Chung-Pai Chang, Jiun-Yee Yen, Hao Kuo-Chen, Chun-Chin Wang
TERRESTRIAL ATMOSPHERIC AND OCEANIC SCIENCES
(2019)
Article
Geosciences, Multidisciplinary
Shao-Yi Huang, Jiun-Yee Yen, Bo-Lin Wu, I-Chin Yen, Ray Y. Chuang
TERRESTRIAL ATMOSPHERIC AND OCEANIC SCIENCES
(2019)
Article
Geosciences, Multidisciplinary
Ya-Shien Lin, Ray Y. Chuang, Jiun-Yee Yen, Yi-Chin Chen, Yu-Ting Kuo, Bo-Lin Wu, Shao-Yi Huang, Ci-Jian Yang
TERRESTRIAL ATMOSPHERIC AND OCEANIC SCIENCES
(2019)
Review
Geosciences, Multidisciplinary
Fuquan Yang, Xinxia Geng, Zhixin Zhang, Guoren Liu, Hanqing Zhang
Summary: Northern Xinjiang in China is an important part of the Central Asian Orogenic Belt, characterized by multiple episodes and types of mineralization. Cu and Au deposits are mostly found in Altay, Junggar, and Tianshan, with minor occurrences in Beishan. The most common types of Cu-Au deposits are volcanogenic and porphyry deposits. The formation of Cu-Au deposits can be divided into five mineralization episodes, with the Devonian and Carboniferous being the main periods. These deposits developed in various tectonic settings, including island arc, continental arc, collision, and postcollisional extensional tectonics.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Jiang Zhu, Dan-yang Liu, Chao Chen, Song Chen, Yuan-bing Zou, Leonid Danyushevsky, Jing-meng Huang, Xiang-wei Tang
Summary: Numerous lode gold and silver deposits have been discovered in orogenic belts in China. This study focuses on the formation and fluid evolutions of the super-large Yingdongpo gold and giant Poshan silver deposits in the Tongbai-Dabie orogen. The results suggest that both deposits were formed concurrently with Early Cretaceous granitic magmatism and the ore-forming fluids were primarily of magmatic origin with meteoric water inputting. The gold mineralization is related to a change in the physicochemical properties of the fluids, while the silver mineralization is favored by progressive deposition of sulfides in a slowly cooling hydrothermal system.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Arun Bhadran, B. P. Duarah, Drishya Girishbai, Mohammad Atif Raza, Avi Mero, Sandeep Lahon, A. L. Achu, Girish Gopinath
Summary: The Brahmaputra foreland basin, known for its dynamic tectonism and sediment load, exhibits a variety of seismically generated soft sediment deformation structures (SSDS) such as clastic dikes, sand sills, and micro-faults. These structures, influenced by multiple strong seismic events, are characterized by their dimensions, intrusion angles, cross-cutting relations, wall shattering, and age. The study suggests that a significant earthquake with high intensity and magnitude might have caused liquefaction features in the area. The findings highlight the importance of studying SSDS in tectonically active regions with limited surface ruptures and dense alluvial cover.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Huan Wang, Lirong Dou, Xingyang Zhang, Jiquan Yin, Beiwei Luo, Haigang Duan, Peiguang Yang, Yifan Song
Summary: Quantitative analysis of sediment composition and microfacies helped identify changes in facies belts in the Cretaceous Mishrif Formation. The study demonstrated the importance of carbonate microfacies quantification and its implications for paleogeographic research.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Boran Wang, Zhilong Huang, Dongsheng Xiao, Haiyue Yu, Wenren Zeng, Xin Wang, Tong Qu, Zhiyuan Li, Yizhuo Yang
Summary: By systematically analyzing the source rocks of the Sangonghe Formation in the Taibei Sag, NW China, and using kerogen kinetics modeling, this study reveals the influence of geological conditions on hydrocarbon generation and expulsion. The source rocks in different environments show distinct geochemical characteristics and hydrocarbon generation potential.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Haiying Yang, Zhifang Zhao, Haifeng Fan, Min Zeng, Jiafei Xiao, Xiqiang Liu, Shengwei Wu, Jiangqin Chao, Yong Xia
Summary: This paper investigates the REE enrichment and the role of Fe/Mn (oxyhydr)oxides in marine phosphorites from the early Cambrian period in South China. The study reveals that Fe/Mn (oxyhydr)oxides play a crucial role in REE enrichment and are controlled by Fe-redox pumping.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Qing Li, Hongbin Wang, Feng Cai, Di Luo, Fanxing Kong, Ang Li, Xiting Liu
Summary: The elemental and isotopic compositions and abundance of carbonates in marine sediments are used to reconstruct ancient climate and ocean conditions. This study analyzed sediment samples from the Okinawa Trough to examine the relationship between carbonates' compositions and methane seepage and sea-level changes. The results indicate that both biogenic and authigenic carbonates are important factors in understanding paleoclimate and paleoceanography.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Maryam Akbarzadeh Aghdam, Abdolreza Ghods, Farhad Sobouti, Khalil Motaghi, Keith Priestley, Mohammad Enayat
Summary: The Makran subduction zone is difficult to monitor due to limited seismic activity, but a temporary seismic network was installed to investigate the relationship between different regions and detect seismicity. The observed seismicity suggests the presence of structural boundaries and seismically inactive areas.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Zhen-Yu Wang, Hong-Rui Fan, Hai-Dong She, Kui-Feng Yang
Summary: This study conducted detailed geochemical, geochronological and isotopic analyses on the Songxian syenite in the Qinling Orogen. The results revealed the magma sources, petrogenesis and geodynamic implications of this alkaline intrusion. The study suggests that the syenite was formed through multiple stages of magmatism, involving the partial melting of the enriched lithospheric mantle and mixing with melts derived from the lower crust.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Yu Li, Wen-Liang Xu, Xiao-Ming Zhang, Jie Tang
Summary: This study presents new zircon U-Pb-Hf and whole-rock geochemical data for Jurassic intrusive rocks in the Yanbian area of NE China, providing insights into the subduction history of the Paleo-Pacific Plate. The study reveals three stages of Jurassic magmatism in the area, indicating the presence of an active continental margin related to the initial subduction of the Paleo-Pacific Plate beneath the Eurasian continent.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Lina Ai, Shengfa Liu, Shuai Cong, Hui Zhang, Peng Cao, Kaikai Wu, Wenxing Ye, Che Abd Rahim Mohamed, Xuefa Shi
Summary: This study investigates the depositional configurations and sedimentary environments of the Malacca Strait through analyzing grain size characteristics and hydrographic data. The results show that residual sediments are concentrated in the central region, while modern terrigenous sediments are distributed along the coast of Malaysia and the northern region. The sedimentary environments are influenced by seasonal variations and hydrodynamic conditions.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Liang Xiao, Jia-qi Liang, Li-yan Guo, De-shuang Ji, Man Yuan, Xiang-chuan Li, Nan Sun, Zuo-chen Li
Summary: This study investigates the correlation between stable carbon isotopes of plant fossils and CO2 levels in the Jurassic period. The results suggest a weak correlation between the two, indicating caution is needed when using stable carbon isotopes to reconstruct high paleo-CO2 concentrations.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Xuli Yang, Feng Huang, Jifeng Xu, Xijun Liu, Liying Zhang, Zhao Zhang, Benyan Xu, Man Zhang, Yunchuan Zeng, Qian Liu, Mingda Lv
Summary: The extensively developed Early Cretaceous intermediate-felsic rocks in the northern North China Craton provide valuable insights into the nature of Paleo-Pacific subduction and associated geodynamic processes. Geochemical and geochronological analyses of trachyandesites and rhyolites from the eastern Hebei, northern NCC suggest that the trachyandesites likely originated from enriched mafic lower crust and the rhyolites are derived from the trachyandesitic magmas through fractional crystallization. The migration direction change of these rocks is believed to be primarily attributed to slab rollback of the subducting Paleo-Pacific Plate.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Wei Liu, Ping Gao, Xianming Xiao, Yanming Zhao, Yijie Xing, Jinku Li
Summary: The organic-rich shales of the Shuijingtuo Formation in China are an important target for shale gas exploration. The upper section of the formation, primarily consisting of limestone, silty shale, and black shale, has been rarely studied but recently showed promising results for shale gas exploration. Geochemical investigations of the upper section shale deposits revealed that the organic matter enrichment mechanism underwent dynamic changes due to relative sea-level changes and episodic upwelling activities.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Xin Wang, Chen Zhang, Zixin Xue, Qianyou Wang, Zhenxue Jiang, Kun Zhang, Xiangye Kong
Summary: This study analyzed the heterogeneity of gas compositions and the effects of magmatism on gas accumulation in shale gas exploration in the Yangtze plate. The results showed that magmatism caused the development of micro-fractures in shale reservoirs and accelerated the thermal evolution rate of organic matter. The impact of magmatism on shale gas accumulation varied in different regions, either favoring or compromising efficient gas accumulation in shale reservoirs.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)