Results 31 to 40 of about 2,705 (166)

High-resolution satellite imagery analysis of coseismic landslides and liquefaction induced by the 2024 MW 7.4 Hualien earthquake, Taiwan, China

Earthquake Research Advances
Rapidly obtaining spatial distribution maps of secondary disasters triggered by strong earthquakes is crucial for understanding the disaster-causing processes in the earthquake hazard chain and formulating effective emergency response measures and post ...
Lingyun Lu, Yueren Xu, Jiacheng Tang, Guiming Hu   +3 more
doaj   +1 more source

地电阻率观测中两种电极接地电阻测量方法及其对比研究

Dizhen xuebao, 2022
利用传统三极接地电阻率测量方法对井下电极接地电阻进行测量会存在较大的测量误差，表明该方法已不适用于井下电极接地电阻测量。针对此问题，提出了利用台站现有地电阻率仪器进行电极接地电阻测量的新方法—直接测量法，并使用传统三极法和直接测量法对北京平谷地震台井下观测供电电极接地电阻进行了测量。测量结果表明：与传统三极法对比，直接测量法的测量结果更为准确、可靠，而且节省人力、物力和时间。
Yu Zhang, Lanwei Wang, Zhe Hu
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CH4 and CO2 Emissions From Different Tectonic Settings Along the Western Margin of the Ordos Block in China: Output and Correlation With the Regional Tectonics

Geochemistry, Geophysics, Geosystems
The investigation of tectonic controls on CH4 and CO2 emissions was conducted by measuring the fluxes of the gases in the different tectonic units along the northwestern margin of the Ordos Block in China, a region renowned for its intricate tectonic ...
Y. J. Cui, Y. Li, W. Zheng, J. N. Huang, Z. J. Zeng, Z. F. Liu, X. C. Zhou, F. X. Sun, Z. Y. Zou, X. Y. Si, X. Y. Li, J. G. Du   +11 more
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Using a Spatial Analysis Method to Study the Seismo-Ionospheric Disturbances of Electron Density Observed by China Seismo-Electromagnetic Satellite

Frontiers in Earth Science, 2022
Due to the complex processes of earthquake preparation, the observations and studies associated with earthquakes have attracted the attention of geophysicists for many years. The CSES was successfully launched on 2 February 2018.
Jing Liu, Xiaoling Qiao, Xuemin Zhang, Zhuangkai Wang, Chen Zhou, Yu Zhang   +5 more
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Tectonic Controls on Near-Surface Variations in CH4 and CO2 Concentrations along the Northwestern Margin of the Ordos Block, China

Geofluids, 2019
Tectonic controls on near-surface CH4 and CO2 concentrations were investigated by measuring CH4 and CO2 concentrations at the surface and a height of 1.5 m, in the different tectonic units that comprise the northwestern margin of Ordos Block, China ...
Y. J. Cui, Y. Li, X. Y. Si, L. X. Yang, Z. F. Liu, F. X. Sun, X. Y. Li, H. W. Zheng, J. G. Du   +8 more
doaj   +1 more source

Traffic flow and vehicle speed monitoring with the object detection method from the roadside distributed acoustic sensing array

Frontiers in Earth Science, 2023
Distributed acoustic sensing (DAS) is an emerging technology that transforms a typical glass telecommunications cable into a network of seismic sensors.
Zhipeng Ye, Weijun Wang, Xin Wang, Feng Yang, Fei Peng, Kun Yan, Huadong Kou, Aijing Yuan   +7 more
doaj   +1 more source

Fluid‐Driven Seismicity in the Baihetan Reservoir Area Revealed by 3D Seismic Tomography Based on Dense Seismic Arrays

Earth and Space Science
After impounding the Baihetan Water Reservoir in a historically seismically active area, numerous earthquakes occurred, but it is uncertain if they are connected to the impoundment.
Mengqiao Duan, Lianqing Zhou, Cuiping Zhao, Xiaodong Zhang   +3 more
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A Low-Noise High-Resolution Temperature Measurement Technique Based on Inductive Voltage Divider and Alternating-Current Bridge

Sensors
In the field of space gravitational wave detection, high-precision temperature measurement with a resolution at the micro-Kelvin level in the milli-Hertz frequency range is required to mitigate the interference caused by temperature fluctuations around ...
Shanghua Gao, Xiaoyi Zhu, Xiaofeng Zhang, Bing Xue, Jilou Xi, Jiang Li, Bing Zhang, Xiaolei Wang, Yuru Wang, Haoyue Zhang, Xu Wu   +10 more
doaj   +1 more source

Ionospheric Statistical Study of the ULF Band Electric Field and Electron Density Variations Before Strong Earthquakes Based on CSES Data

Remote Sensing
Anomalous ionospheric disturbances have been observed as potential precursors to earthquakes. This study utilized data from the CSES satellite to investigate anomalies in the ULF band ionospheric electric field and electron density preceding earthquakes ...
Lei Nie, Xuemin Zhang, Hong Liu, Shukai Wang   +3 more
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Probabilistic forecasting of earthquakes [PDF]

Geophysical Journal International, 2000
We present long‐term and short‐term forecasts for magnitude 5.8 and larger earthquakes. We discuss a method for optimizing both procedures and testing their forecasting effectiveness using the likelihood function. Our forecasts are expressed as the rate density (that is, the probability per unit area and time) anywhere on the Earth.
Y. Y. Kagan, D. D. Jackson
openaire   +1 more source