A5000814233- Seismic Imaging and Inversion Techniques
- Seismic Waves and Analysis
- earthquake and tectonic studies
- Seismology and Earthquake Studies
- Hydraulic Fracturing and Reservoir Analysis
- Geophysical Methods and Applications
- High-pressure geophysics and materials
- Hydrocarbon exploration and reservoir analysis
- Drilling and Well Engineering
- Geophysical and Geoelectrical Methods
- Geological and Geochemical Analysis
- Earthquake Detection and Analysis
- Advanced Computational Techniques and Applications
- Geological and Geophysical Studies
- Geotechnical Engineering and Underground Structures
- Landslides and related hazards
- Electromagnetic Simulation and Numerical Methods
- Advanced Database Systems and Queries
- Industrial Technology and Control Systems
- 3D Surveying and Cultural Heritage
- Geochemistry and Geologic Mapping
- Insect-Plant Interactions and Control
- Computer Graphics and Visualization Techniques
- Geomechanics and Mining Engineering
- Reservoir Engineering and Simulation Methods
Southern University of Science and Technology
2017-2025
Shandong University of Science and Technology
2009-2024
NARI Group (China)
2024
Guizhou Normal University
2024
Beijing Jiaotong University
2024
Institute of Software
2024
Wuhan Science and Technology Bureau
2024
Southwest Petroleum University
2024
State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation
2024
Key Laboratory of Guangdong Province
2024
On 6 February 2023, two large earthquakes (moment magnitude 7.8 and 7.6) shocked a vast area of southeastern Türkiye northern Syria, leading to heavy casualties economic loss. To investigate the rupture process over multiple fault segments, we performed comprehensive analysis local seismic geodetic data determined supershear ruptures on initial branch Pazarcık Erkenek segments subshear Amanos segment event 1. The bilateral 2 also presents distinct sub- velocities. dynamic stress triggered at...
In this study, we propose a new numerical method, named as Traction Image to accurately and efficiently implement the traction-free boundary conditions in finite difference simulation presence of surface topography. algorithm, computational domain is discretized by boundary-conforming grids, which irregular transformed into 'flat' space. Thus, artefact staircase approximation arbitrarily can be avoided. Such gridding equivalent curvilinear coordinate system, first-order partial differential...
Surface topography has been considered a difficult task for seismic wave numerical modelling by the finite-difference method (FDM) because most popular staggered scheme requires rectilinear grid. Even though there are numerous collocated grid schemes in other computational fields that could be used to solve first-order hyperbolic equations, lack of stable free-surface boundary condition implementation curvilinear grids also obstructs adoption FDM modelling. In this study, we use generalized...
Knowledge graph embedding aims to learn distributed representations for entities and relations, is proven be effective in many applications. Crossover interactions --- bi-directional effects between relations help select related information when predicting a new triple, but haven't been formally discussed before. In this paper, we propose CrossE, novel knowledge which explicitly simulates crossover interactions. It not only learns one general each entity relation as most previous methods do,...
Differences between 3-D numerical predictions of earthquake ground motion in the Mygdonian basin near Thessaloniki, Greece, led us to define four canonical stringent models derived from complex realistic model basin.Sediments atop an elastic bedrock are modelled 1D-sharp and 1D-smooth using three homogeneous layers smooth velocity distribution, respectively.The 2D-sharp 2D-smooth extensions 1-D asymmetric sedimentary valley.In all cases, wavefields include strongly dispersive surface waves...
To simulate seismic wave propagation in the spherical Earth, Earth′s curvature has to be taken into account. This can done by solving equation coordinates numerical methods. In this paper, we use an optimized, collocated-grid finite-difference scheme solve anisotropic velocity-stress coordinates. increase efficiency of algorithm, a non-uniform grid discretize computational domain. The varies continuously with smaller spacing low velocity layers and thin layer regions larger otherwise. We...
In view of a dynamic obstacle environment with motion uncertainty, we present collision avoidance method based on the risk assessment and improved velocity method. First, through fusion optimization forward-looking sonar data, redundancy data is reduced position, size information obstacles are obtained, which can provide an accurate decision-making basis for next-step avoidance. Second, according to minimum meeting time distance between unmanned underwater vehicle (UUV), this paper...
Abstract Migration‐based location methods (e.g., time‐reverse imaging based on wave equation, Kirchhoff summation, and diffraction stacking) can effectively locate events of low signal‐to‐noise ratios by stacking waveforms from many receivers. The have been widely applied for surface microseismic monitoring. However, these may not produce accurate results if there are polarity reversals in the records a double‐couple or even general moment tensor event. Various conditions developed to solve...
The whitebacked planthopper, Sogatella furcifera (Horváth), and small brown Laodelphax striatellus (Fallén), both are important crop pests throughout China, especially in rice. Application of chemical insecticides is the major control practice. Consequently, insecticide resistance has become an urgent issue. In this study, levels to six conventional were evaluated for these two species collected from occurring areas China. Additionally, imidacloprid- (resistance ratio [RR] = 10.4-fold)...
Rockbursts are a common form of disaster that occur during the construction deep tunnels in hard rock. This is especially case breakthrough stage excavation, when even more attention should be paid to risk rockburst order ensure safety. work studied characteristics microseismicity associated with 10 cases (maximal depth 2,525 m) Jinping-II Hydropower Station China. The results showed was relatively active period (compared adjacent sections) due effect working two faces tandem and...
Due to the design requirements for high power-to-weight ratios in modern aviation equipment, hydraulic servo valves are continuously developing towards miniaturization. Current manufacturing methods, such as casting and forging, constrain globe valve designs be tailored manufacturability. However, integrated flow passage structures produced using additive feature minimal external envelopes while exhibiting complexity. This results increased difficulty, necessitating research into their...
The fully staggered grid (FSG) combines multiple standard grids (SSGs) to simulate seismic wave propagation in anisotropic elastic media. However, its accuracy is contingent upon the wavefield’s consistency and continuity across sets of SSGs. In isotropic or weakly media, decoupling weak coupling between SSGs can lead wavefield discontinuities at adjacent points diagonal direction. Issues such as inconsistent source activation, medium parameter discontinuities, different numerical treatments...
Code-switching, the alternation between two or more languages within communication, poses great challenges for Automatic Speech Recognition (ASR) systems. Existing models and datasets are limited in their ability to effectively handle these challenges. To address this gap foster progress code-switching ASR research, we introduce DOTA-ME-CS: Daily oriented text audio Mandarin-English dataset, which consists of 18.54 hours data, including 9,300 recordings from 34 participants. enhance...
Abstract Perfectly matched layer (PML) has been successfully used in various wave propagation simulations the Cartesian coordinate. But cylindrical or spherical coordinates, equations contain trigonometric terms, which make PML derived by complex stretching of coordinate axes hard to transform back time domain for numerical solving. To use 3D sections regional-scale seismic-wave simulation, we propose a trivial implementation implementing local The variables and spatial derivatives are...
Abstract In the northern part of South China Sea lies a tectonic belt with frequent seismic activity, which is known as Littoral Fault Zone (LFZ). The middle this fault zone adjacent to Guangdong–Hong Kong–Macao Greater Bay Area (GBA). LFZ comprises three main segments characterized by complex features and high seismicity. Using curvilinear grid finite-difference method, we first conducted 3D spontaneous dynamic rupture simulation potential earthquakes on multifault model LFZ. Under...
Simulating seismic waves with uniform grid in heterogeneous high-velocity contrast media requires small-grid spacing determined by the global minimal velocity, which leads to huge number of points and small time step. To reduce computational cost, discontinuous grids that use a finer at shallow low-velocity region coarser regions are needed. In this paper, we present implementation for collocated-grid finite-difference (FD) methods increase efficiency wave modelling. The ratio n could be an...
This study simulates seismic wave propagation across a 2-D topographic fluid (acoustic) and solid (elastic) interface at the sea bottom by finite-difference method (FDM). In this method, waves in water are governed acoustic equations, whereas earth elastic equations. The fluid–solid condition is implemented on interface. Body-conforming grids used to fit which naturally avoids spurious diffractions due staircase approximation. A collocated-grid MacCormack FDM utilized update wavefields...