A5101517290- Geological and Geophysical Studies
- earthquake and tectonic studies
- Seismic Imaging and Inversion Techniques
- Methane Hydrates and Related Phenomena
- High-pressure geophysics and materials
- Geological and Geochemical Analysis
- Hydrocarbon exploration and reservoir analysis
- Geological formations and processes
- Seismic Waves and Analysis
- Geological Studies and Exploration
- Geophysical and Geoelectrical Methods
- Advanced Computational Techniques and Applications
- Geophysics and Gravity Measurements
- Geological Formations and Processes Exploration
- E-commerce and Technology Innovations
- Seismology and Earthquake Studies
- Belt and Road Initiative
- Global Political and Economic Relations
Institute of Oceanology
2016-2025
Chinese Academy of Sciences
2016-2025
South China Sea Institute Of Oceanology
2016-2025
Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)
2022-2023
University of Chinese Academy of Sciences
2016-2023
Abstract P wave velocity models were obtained by forward and inverse modeling from 38 ocean bottom seismometers deployed in the central East subbasin of South China Sea (SCS). Four types crust have been defined: (a) thin oceanic (<5 km), (b) typical (5–6 (c) thick hosting postspreading volcanoes (>6 km) with significant intrusive roots, (d) enhanced spreading features but without roots. Within subbasin, crust, only identified inside an 80 km wide zone, is located within overall 150...
Abstract In 2016, we carried out a coincidental multichannel reflection seismic and wide‐angle reflection/refraction experiment along 320‐km‐long profile across the northeastern margin of South China Sea. Based on these new data, studied velocity structure transitional continental crust using both forward modeling travel‐time tomography. The model shows that Mesozoic sediments have velocities 4.3–5.3 km/s are about 3–6 km thick in magnetically quiet Chaoshan Depression attenuated crust....
During the final stages of seafloor spreading in East Sub-basin (ESB) South China Sea (SCS), ridge transitioned from slow to ultraslow before complete cessation. Post-spreading volcanic activity has obscured original structures along extinct (ESR), complicating interpretations spreading-related tectonics. Using independent tomographic inversion P- and S-wave data, we constructed a detailed VP/VS&#160; model profile perpendicular ESR, offering critical insights into crustal lithology...
Seamount subduction plays a pivotal role in shaping zone dynamics, significantly influencing deformation processes and seismicity. This study examines the crustal upper mantle associated with seamount beneath northern Luzon, where South China Sea Plate underthrusts region. We employed local S-wave splitting techniques to characterize present&#160;seismological evidence of subduction&#8217;s modulating dynamics.Our findings reveal dominant trench-normal fast-axis orientation, aligned...
Abstract The southern Mariana subduction zone, home to the Challenger Deep—the deepest known point on Earth—poses significant challenges for studying hydration of subducting plate due its extreme depth. This study uses S‐wave seismic tomography and V p / s ratios investigate serpentinization at Deep. We observe a low layer in upper mantle with exceeding 1.8, reaching up 1.95 Moho. These high indicate strong serpentinized (>15 vol%) changes mechanical properties peridotite. Additionally,...
Abstract The probable N055°‐oriented extinct spreading ridge of the East Sub‐basin is cut across by post‐spreading volcanic oriented approximately E–W in its western part and called Zhenbei–Huangyan seamounts chain. A three‐dimensional ocean bottom seismometer survey was conducted 2011 covered both chain Sub‐basin. comprehensive seismic record sections 39 seismometers underline high‐quality data with clear reliable P ‐wave first arrivals. tomographic results show that crust oceanic on each...
Abstract Xisha block, as a micro‐continental massif formed during the process of formation South China Sea (SCS), has recorded important information about evolutionary history SCS. The crustal structure, petrological properties and tectonic attributes block are critical to theory evolution Based on Ocean Bottom Seismometers (OBS) data acquired from Line OBS2013–3, P‐wave velocity model along this line is established employing ray‐tracing forward travel‐time modeling method. structure shows...
We construct a complete density transection based on the velocity structures across Zhongsha Bank in South China Sea. Gravity modelling of lateral contrasts between tectonic units helps us to determine structural attributes and boundaries continental blocks deep basins. The configuration continent–ocean boundary (COB) around is mapped gravity/magnetic anomaly crustal structures. A low-density mantle found beneath oceanic basins, this associated with high heat-flow background. COB orientation...
The marginal sea and back-arc basins in the Western Pacific Ocean have become focus of tectonics due to their unique tectonic location. To understand deep crustal structure region, we present a 545-km-long active-source ocean bottom seismometer (OBS) wide-angle reflection/refraction profile East China Sea. P wave velocity model shows that Moho depth rises significantly, from approximately 30 km Sea shelf 16 axis Okinawa Trough. lower high-velocity zone (HVZ) southern Trough, with Vp 6.8–7.3...
Abstract Accurate positions of ocean-bottom seismometers (OBSs) on the seafloor are critical parameters and can only be obtained by inversion modeling first-arrival travel times overhead cross-line airgun shootings. With an increased sampling interval ≤20 ms for long-term earthquake studies, apparent artifacts affect phase alignment first arrivals seismic sections trace-cut shots. Our analysis shows that these misalignments caused timing inconsistencies inaccuracies during trace-cut, which...
Abstract In the late 90’s, some faults identified within oceanic crust were demonstrated to be artifacts arising from out-of-plane scattering along linear sediment-buried fault scarps. Symmetrical mantle reflections observed southwest northern Sumatra on seismic reflection profiles have been as cutting through upper down unprecedented depths reaching ~45 km. Seawater being conveyed sub-vertical re-activated fracture zones (FZs) mantle, portions of FZs are serpentinized and act mirrors for...
Water is essential for the formation of a magmatic arc by lowering melting temperature materials in mantle wedge. As such, it logical to attribute absence insufficient water released from subducting plate, although number other factors may cause volcanic quiescence as well, such slab window or flat subduction. In this contribution, we present possible but testable correlation between occurrence and seamount subduction light bathymetric data obtained near trenches. This correlation, if holds...