A5006564437- earthquake and tectonic studies
- Geomagnetism and Paleomagnetism Studies
- Earthquake Detection and Analysis
- Geochemistry and Geologic Mapping
- Geophysical and Geoelectrical Methods
- Seismic Imaging and Inversion Techniques
- Geological and Geophysical Studies
- Hydrocarbon exploration and reservoir analysis
- Seismic Waves and Analysis
- Geophysical Methods and Applications
- High-pressure geophysics and materials
- Geophysics and Gravity Measurements
- Geoscience and Mining Technology
- Atmospheric and Environmental Gas Dynamics
- Remote Sensing and Land Use
- Seismology and Earthquake Studies
- Planetary Science and Exploration
- Geological and Geochemical Analysis
- Underwater Acoustics Research
- Landslides and related hazards
- Osteoarthritis Treatment and Mechanisms
- Soil erosion and sediment transport
- Geological Studies and Exploration
- Quantum many-body systems
- Spaceflight effects on biology
Zhejiang University
2009-2025
China University of Geosciences
2012-2024
China Earthquake Administration
2006-2022
Institute of Disaster Prevention
2022
Shandong University of Technology
2020
United States Geological Survey
2018-2019
State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation
2010
Chengdu University of Technology
2010
Xiaomi (China)
2010
United States Government Accountability Office
2009
This study optimized the slope and length factor (LS) crop management (P) of RUSLE model then introduced gravity centre to analyze spatial–temporal variation patterns soil erosion in Yellow River Basin from a new perspective. Results showed that: (1) The improved with factors LS P had better applicability Basin; (2) average intensity was 2777.5 t/a, which belonged moderate erosion. an overall trend increasing firstly (1990–2005) decreasing (2005–2015). (3) During 1990–2015, moved southwest,...
Abstract Landslides are widely distributed mountainous geological hazards that threaten economic development and people's daily lives. Interferometric synthetic aperture radar (InSAR) with comprehensive coverage high‐precision ground displacement monitoring abilities frequently utilized for regional‐scale active slope detection. Moreover, InSAR measurements characterize dynamics integrated conventional topographic, hydrological, landslide conditioning factors (LCFs) susceptibility mapping...
Abstract The physical properties of the lithospheric and upper mantle's rock are determined by its composition in situ temperature pressure conditions. Together, they have been referred to as thermochemical structure. Information about structure could be obtained using methods from different disciplines earth sciences, which geophysical approaches show potential map 3D variations on both regional global scales. Thus, techniques for investigating spherical coordinates needed, including...
The nonlinear conjugate gradient (NLCG) algorithm is one of the popular linearized methods used to solve frequency-domain electromagnetic (EM) geophysical inverse problem. During NLCG iterations, model guides searching direction while line-search determines step length each iteration. Normally, line search requires solving corresponding forward problem a few times. Since usually computationally inefficient, we introduce adaptive descent (AGD) accelerate EM within framework. AGD variant...
We propose a spatial approach for constructing 3D density models and carrying out the corresponding forward modeling of gravitational fields using spherical coordinates. The model may have variable resolution undulated interfaces. introduce method that uses constraining conditions provide refinements at selected locations, trajectories or areas. Subsequently, an adaptive strategy is presented to calculate model's exterior field. provides almost constant calculation accuracy from Earth's...
Abstract Modification of the cratonic lithosphere remains no consensus on mechanisms. We here presented a method to reconstruct Paleozoic‐lithospheric structures North China Craton (NCC) from its current structures. The results show that, after Paleozoic, massive thinning only occurred in eastern East Block (EB) but thickening northern Ordos Basin and region Weibei uplift South Taihang Mountains uplift. also calculated self‐sustaining oscillation periods three parts NCC during course...
The efficiency of solving geophysical inverse problem largely relies on the corresponding forward problem. As for electromagnetic (EM) data modeling in frequency domain, conventional numerical methods, e.g. finite difference method (FDM), discretize governing equations resulting a large linear system which is usually expensive to solve. Meanwhile, inversion iteration we normally do not need solve high precision. Thus rapid surrogate approach uses neural network promising replacing module...
We have measured radial anisotropy in the crust beneath northern part of North China by jointly inverting Rayleigh and Love wave phase velocities at periods less than 35 s from 14 months ambient noise data recorded 222 broad-band seismic stations. also estimate azimuthal velocity data. The fast direction varies with periods, NE–SW orientation short intermediate (10–16 s) NW–SE larger 20 s. oriented may be related to fossilized structural fabrics due compression during Indosinian orogeny late...
SUMMARY Geophysical inverse problems are commonly ill-posed and require proper regularization to gain acceptable solutions. Adopting constraints on the smoothness and/or specified structures of an inverted geophysical model requires implementation terms when either structured or unstructured meshes used. Spatial gradients parameters along axial arbitrary directions thus required. However, calculation spatial is not straightforward since interfaces between adjacent cells (i.e. common edges...
The inversion of density interfaces using spherical coordinates is usually achieved with techniques developed in the harmonic domain or by applying a rectangular partition surface model cells tesseroid. For irregular data coverage and areas at high latitude, methods under such framework have difficulties utilizing multiresolution models global that can achieve constant resolution. We introduce implementation triangular tessellation as fundamental representation for constructing 3-D...
Aiming at the issues of high consumption reagents and energy, poor removal ability carbon phosphorus in existing process sewage treatment plants, a novel type & co-trapping magnetic coagulant named as acid-modified magnetically doped biochar (A/M-BC) was prepared for treatment. Results showed that efficiencies chemical oxygen demand (COD) total (TP) were 64.4% (±2%) 93.7% (±8%), respectively. A series characterization findings indicated A/M-BC had nanoscale porous structure, surface laden...
Longmen Shan is located the special joint be-tween Tibetan Plateau inland in west and Yangtze craton east. Consisting of a se-ries parallel imbricated thrust, it develops, from to east, Maoxian- Wenchuan, Beichuan-Yingxiu Pengxian- ﹡This research was supported by China National Natural Science Foundation grant 40841010, 40972083 Technology supporting Plan 2006BAC13B02-07, 2006BAC13B01-604. Guanxian faults. The Wenchuan earthquake thrust with strike-slip type, thre surface ruptures are on...