A5035800573- Seismic Imaging and Inversion Techniques
- Seismic Waves and Analysis
- Hydrocarbon exploration and reservoir analysis
- Methane Hydrates and Related Phenomena
- Geological and Geophysical Studies
- Underwater Acoustics Research
- Drilling and Well Engineering
- Geological Modeling and Analysis
- Reservoir Engineering and Simulation Methods
- Geological formations and processes
- Advanced Computational Techniques and Applications
- Geological and Geochemical Analysis
- Hydraulic Fracturing and Reservoir Analysis
- earthquake and tectonic studies
- High-pressure geophysics and materials
- Geophysical Methods and Applications
- Ultrasound and Cavitation Phenomena
- Geological Studies and Exploration
- Image and Signal Denoising Methods
- Oil Spill Detection and Mitigation
- Higher Education and Teaching Methods
- Optical Systems and Laser Technology
- Remote Sensing and Land Use
- Robotic Path Planning Algorithms
- Environmental Changes in China
Ocean University of China
2015-2025
Qingdao National Laboratory for Marine Science and Technology
2017-2025
A Bottom Simulating Reflector (BSR) is a seismic feature closely related to marine gas hydrate as it usually regarded the response of base stability zone in profiles. BSRs are widely distributed Makran accretionary wedge, and double observed at some locations. Double appear on profiles two layers located distinct depths but with large lateral amplitude variations. Based multi-channel reflection data acquired over this work studies origin BSR wedge its association fluid escape events. Our...
Abstract A total of 431 well‐defined and 632 null shear–wave splitting measurements obtained from 115 broadband seismic stations located in the eastern Himalayan syntaxis adjacent areas is largely inconsistent with predicted fast orientations by absolute plate motion models. Spatial coherency analysis parameters suggests that observed azimuthal anisotropy mostly upper asthenosphere or transitional layer between lithosphere asthenosphere, disagreement regional tectonic fabrics an...
The multiple reflections develop in deep-sea. Especially rough deep-sea bottom, the is more complicated. Conventional radon transform filtering has its deficiency, and effection not obvious suppressing of seismic data In order to achieve high resolution transform, this paper proposes an improved method. This method able build a very good model reflections, then suppress multiples, overcome deficiency by conventional transform. To verify efficiency method, deep seafloor was established. By...
SUMMARY Cratons are generally defined as stable continental blocks with a strong cratonic root that typically is at least ∼200 km thick. Many cratons have undergone little internal tectonism and destruction since their formation, but some of them, such the eastern part North China Craton (NCC), Dharwar Wyoming Craton, lost thick become reactivated in recent geological history, leading to widespread Meso-Cenozoic volcanisms. The mechanisms responsible for decratonization remain debated. To...
Abstract The growing quality and improving spatial coverage of broadband seismic stations on the African (Nubian + Somalian) Arabian plates motivate us to present a catalog S-to-P receiver functions (SRFs) from southern Africa northern Arabia. As in North America where ability compare data cratons modern rift provinces has led new insights about lithospheric discontinuities, so, too, Arabia can we begin track study Moho, midlithospheric lithosphere–asthenosphere boundary (LAB) between...
The researches and applications on ant colony algorithm have made great progress in recent years. A number of results proved the validity its advantages some fields. However, basic shortcomings, which are long searching time easily jumping into local optimal solution, not been completely solved. This paper analyzes reasons stagnation then introduces a new solution for avoiding stagnation, includes direct exchange pheromone edges dynamically setting evaporation rate each edge. simulation...
Abstract Thorough understanding of seabed fluid flow system is great significance to geohazard identification and hydrocarbon exploration as it can reshape the act an indicator subsurface resources. For first time, integrated study side‐scan sonar, single‐ multi‐channel seismic data magnetic reveals a complex composed various seafloor expressions (i.e. pockmarks mounds) shallow migration pathways in central‐west Bohai Sea off northeast China. Gas chimneys, mud diapirs dense network...
As a new borehole seismic technique, while drilling (SWD) uses the vibrations produced by drill-bit as down hole energy source. The continuous signals generated drill bit are recorded pilot sensor attached to top of string and receivers located at selected positions around borehole. In real SWD data, both weak signal strong noise typically superimposed all times. So key technique is how extract from kinds noise. We proposed method directly raw-field data acquired surface. Applying this shows...
In this paper, the physical and practical significance of seabed reflection coefficient are studied based on seismic convolution model, which reveals that high frequency signal is sensitive to acoustic impedance changing. Then data acquired in west coast Taiwan Strait used for case study, calculated light sound pressure level reflected wave. comparison with results geological sampling analysis, overall trend fine particles correspond lower coarse greater coefficient. addition, abnormal...
Abstract Seabed fluid flow happens due to the complex interactionamong accumulation, migration and escape of hydrocarbon and/or fluids. As shallow gas accumulations are anomalously developed in Bohai Bay, studying features provides insights for understanding environment Sea. Therefore, our study, we aimed make practical effective use single‐channel seismic reflection data delineate interpret subsurface by analysing variance, sweetness, instantaneous frequency, root mean square amplitude...
Abstract Most seismic data used for conventional exploration lack far‐offset signals and effective low‐frequency components. This makes it difficult full waveform inversion methods to recover the low‐wavenumber components of mid‐ deep‐layer models. To resolve bottleneck ray‐theoretical reflection traveltime tomography, wave equations, such as methods, are receiving increasing attention. We reconstructed a wide‐spectrum velocity model based on multiscale wave‐equation method decomposition....