Results 31 to 40 of about 5,631 (190)

2014年新疆于田MS7.3地震的发震构造及余震特征

Dizhen xuebao, 2021
利用2014年10月至2019年9月期间欧空局Sentinel-1卫星采集的合成孔径雷达数据分析了2014年2月12日新疆于田MS7.3地震的震后形变场。结果表明，此次地震造成了南硝尔库勒断裂上明显的震后形变，首次从地震形变场的角度验证了此次地震的发震构造为NE向的左旋走滑断裂，而非部分研究所认为的近NS向断裂。由合成孔径雷达干涉测量得到的多年平均速率图显示主震的西侧仅出现了少量震后余滑且仍为强闭锁区，这意味着2008年和2014年于田两次MS7.3地震之间的区域仍存在发生强震的风险 ...
Yi Luo, Yingshun Hu, Yunfeng Tian, Jingfa Zhang   +3 more
doaj   +1 more source

Fluid‐induced slip on a rate‐and‐state fault during co‐ and post‐injection: The interplay of fluid pressure diffusion and poroelastic stress

Deep Underground Science and Engineering, EarlyView.
Fault slip can occur ahead of the injection pressure front due to poroelastic stress. Our model captures the interaction of pressure, stress, and friction, providing new insights into injection‐induced seismicity and post‐injection fault slip. Shut‐in operations can either mitigate or accelerate seismic events depending on fault conditions and ...
Qifeng Xie, Lei Wang, Qi Li
wiley   +1 more source

Health promotion, disease prevention, and healthcare: The measurement of high school student health literacy

Journal of Education and Health Promotion
BACKGROUND: Low levels of health literacy are related with riskier health behaviors and poorer health outcomes. Biological science contributes significantly to students’ health literacy, as many biology topics are directly related to health issues.
Insar Damopolii, Herawati Susilo, Susriyati Mahanal   +2 more
doaj   +1 more source

Modeling and monitoring injectivity evolution during cold CO2 injection with field evidence from aquistore carbon capture and storage operations

Deep Underground Science and Engineering, EarlyView.
This work integrates 5 years of field data from the Aquistore CCS project with a non‐isothermal THM modeling framework to explain how cold CO2 injection alters injectivity over time. The study shows that sustained cooling near the wellbore reduces effective stresses, promotes tensile micro‑cracking, and leads to semi‑reversible permeability enhancement
Alireza Rangriz Shokri, Stephen Talman, Erik Nickel, Rick Chalaturnyk   +3 more
wiley   +1 more source

Generative Modeling of InSAR Interferograms [PDF]

Earth and Space Science, 2019
AbstractInterferometric synthetic aperture radar (InSAR) has become an essential technique to detect surface variations due to volcanoes, earthquakes, landslides, glaciers, and aquifers. However, Earth's ionosphere, atmosphere, vegetation, surface runoff, etc., introduce noise that requires post‐processing to separate its components.
Guillaume Rongier, Cody Rude, Thomas Herring, Victor Pankratius   +3 more
openaire   +4 more sources

Spatiotemporal evolution of land subsidence around a subway using InSAR time-series and the entropy method

GIScience & Remote Sensing, 2017
The underground railway network of Beijing City, China, which is an important urban infrastructure, has burgeoned with the expansion of the city. However, the influence of subway construction and operation on local subsidence has received minimal ...
Wen-Feng Chen, Hui-Li Gong, Bei-Bei Chen, Kai-Si Liu, Mingliang Gao, Chao-Fan Zhou   +5 more
doaj   +1 more source

Modeled Subsidence of Permafrost Terrain 2025–2050: North‐Central Alaska

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT A large fraction of the Alaska terrain is underlain by regolith that contains excess ice (ice that in volume exceeds the natural pore space). Possible loss of excess ice would lead to ground subsidence, which in turn would disturb and destabilize the ground surface.
Jaakko Putkonen, Hayden Patterson, Robert Chance, Mary Soaper, Anai Caparó Bellido, Aymane Ahajjam, Andrew Wilcox, Sheridan Parker, Timothy Pasch   +8 more
wiley   +1 more source

Semantic interpretation of InSAR point clouds [PDF]

2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2015
This paper presents a step towards a better interpretation of the scattering mechanism of different objects and their deformation histories in SAR interferometry (InSAR). The proposed technique traces individual SAR scatterer in high resolution optical images where their geometries, materials, and other properties can be better analyzed and classified.
Yuanyuan Wang 0002, Xiaoxiang Zhu 0001
openaire   +4 more sources

Land subsidence prediction in Beijing based on PS-InSAR technique and improved Grey-Markov model

GIScience & Remote Sensing, 2017
Land subsidence induced by excessive groundwater withdrawal has caused serious social, geological, and environmental problems in Beijing. Rapid increases in population and economic development have aggravated the situation.
Zeng Deng, Yinghai Ke, Huili Gong, Xiaojuan Li, Zhenhong Li   +4 more
doaj   +1 more source

The Integrated Simulation and Processing Tool for Ground Based Synthetic Aperture Radar (GBSAR)

Journal of Engineering Technology and Applied Physics, 2019
Ground-based Synthetic Aperture Radar (GBSAR) is a tremendous example of the extended applications of Synthetic Aperture Radar (SAR). GBSAR is extremely useful in human-made structure observations, terrain mapping, landslide monitoring
Chee Siong Lim, Voon Chet Koo, Yee Kit Chan   +2 more
doaj   +1 more source