A5019243973- Earthquake Detection and Analysis
- Seismic Waves and Analysis
- Geophysical and Geoelectrical Methods
- Seismology and Earthquake Studies
- earthquake and tectonic studies
- Geophysical Methods and Applications
- Geological and Geophysical Studies
- Paleontology and Stratigraphy of Fossils
- Hydrocarbon exploration and reservoir analysis
- Geomagnetism and Paleomagnetism Studies
- Seismic Imaging and Inversion Techniques
- High-pressure geophysics and materials
- Geology and Paleoclimatology Research
- Geological and Geochemical Analysis
- Geological formations and processes
- Geoscience and Mining Technology
- Geological Studies and Exploration
- Geochemistry and Geologic Mapping
- Supercapacitor Materials and Fabrication
- Landslides and related hazards
- Advanced Thermoelectric Materials and Devices
- Ionosphere and magnetosphere dynamics
- Electromagnetic Simulation and Numerical Methods
- Analytical chemistry methods development
- Image Processing and 3D Reconstruction
Chengdu Women's and Children's Central Hospital
2023-2025
University of Electronic Science and Technology of China
2023-2025
Peking University
2015-2024
Zunyi Medical University
2024
Daqing Oilfield General Hospital
2011-2024
Guangxi Special Equipment Inspection Institute
2022-2024
Tongji University
2024
Weatherford College
2007-2023
Zhejiang Provincial People's Hospital
2023
Foshan Hospital of TCM
2023
There have been many reports on ultra-low-frequency (ULF) electromagnetic phenomena associated with earthquakes in a very wide frequency range. In this study, unusual behaviors of geomagnetic diurnal variations prior to the 2011 off Pacific coast Tohoku earthquake (Mw9.0) reported. Ratios variation range between target station Esashi (ESA) which is about 135 km from epicenter and remote reference Kakioka (KAK) 302 distant computed. The results 10-day running mean ratios showed clear anomaly...
The electrokinetic effect is one mechanism that causes the coupling between seismic and electromagnetic energies. This study deals with numerical simulation of electrokinetically induced coseismic fields associated waves created by a finite faulting in porous media. key point our technique to combine source stacking method Luco-Apsel-Chen generalized reflection transmission method. After some validation test method, we show several examples. Through near-field model, approximation not...
Significance The Songpan-Ganzi terrane lies in the central-east of Tibetan Plateau, which was considered a stable block some tectonic models. Its deformation mode is crucial importance for understanding evolutionary history and seismic hazard plateau. recent Maduo earthquake occurred inside terrane. We resolve bilateral rupture process with distinct super- subshear modes this event. also find that pervasive folding structures are aligned by shear current responsible wave anisotropy strain...
The aim of this study is to demonstrate the feasibility using continuous signals about thickness and pennation angle changes muscles detected in real-time from ultrasound images, named as sonomyography (SMG), characterize under isometric contraction, along with synchronized surface electromyography (EMG) generated torque signals. right biceps brachii seven normal young adult subjects were tested. We observed that exponential functions could well represent relationships between normalized EMG...
Abstract Magnetic mineral inclusions occur commonly within other larger phases in igneous rocks and have been demonstrated to preserve important paleomagnetic signals. While the usefulness of magnetic has explored extensively, their presence sediments only speculated upon. The contribution magnetization sediments, therefore, elusive. In this study, we use transmission electron microscope (TEM) methods demonstrate widespread preservation silicate‐hosted marine sedimentary settings. TEM...
SUMMARY Late-time transient electromagnetic (TEM) data contain deep subsurface information and are important for resolving deeper electrical structures. However, due to their relatively small signal amplitudes, TEM responses later in time often dominated by ambient noises. Therefore, noise removal is critical the application of imaging structures at depth. De-noising techniques have been developed rapidly recent years. Although strong efforts made improving quality responses, it still a...
Abstract The airborne electromagnetic (AEM) method is becoming an effective means for subsurface electrical property reconstruction with the merits of terrain adaptability and acquisition efficiency. However, instantaneous inversion time‐domain AEM data still a challenge, owing to huge amount data. Inspired by Google's neural machine translation system, we develop fast operator guided deep learning translate measurements directly into resistivity structures. Trained synthetic data, our...
A model considering the compensation of piezoelectric effect and dislocation theory fault is developed to investigate theoretically generation co-seismic electric signals. Charges are assumed be induced by stress changes associated with earthquakes. The stressinduced charges quantified charge density as a function polarization, which can calculated using an analytical solution seismic stress. theoretical distribution around Nojima fault, moved at 1995 Kobe earthquake (M=7.2), was obtained....
Adopting a model with two half-spaces that consist of solid and porous materials, we numerically investigate the seismoelectric conversion at solid–porous interface. First, wave fields in low-porosity two-layer are compared those homogeneous full-space model. The consistency seismic waves is validation our program. We interested quasi-coseismic electromagnetic (EM) signals recorded area near interface because they seemingly accompany waves. Then, further numerical simulations on an ordinary...
According to field observations, electromagnetic (EM) signals accompanying seismic waves can be recorded. The orders of magnitude observed coseismic electric and magnetic associated with earthquakes are usually around 1 101 mV km−1 10−2 nT, respectively. In this paper, we carry out numerical simulation EM due electrokinetic effect compare observations. source is represented by a finite fault measuring 15 × 9 km2 max slip displacement 1.5 m, corresponding Mw 5.9 earthquake. While using the...
Abstract Based on magnetotelluric (MT) array data, we have obtained the first three‐dimensional (3‐D) electrical resistivity model at Gaoligong intracontinental block boundary in southeastern Tibetan Plateau where Quaternary intraplate Tengchong volcanism and seismic activities occur. Comparing with results of previous geophysical studies area, our MT clearly reveals three conductive bodies depth ranges 10–30 km volcano which interpret as middle‐lower crustal magma chambers associated...