A5060194672- Geological Studies and Exploration
- Geological and Geophysical Studies
- Geological and Geochemical Analysis
- Hydrocarbon exploration and reservoir analysis
- Methane Hydrates and Related Phenomena
- earthquake and tectonic studies
- Geophysics and Gravity Measurements
- High-pressure geophysics and materials
- Ionosphere and magnetosphere dynamics
- Geomagnetism and Paleomagnetism Studies
- GNSS positioning and interference
- Geology and Paleoclimatology Research
- Seismic Waves and Analysis
- Cryospheric studies and observations
- Landslides and related hazards
- Arctic and Antarctic ice dynamics
- Remote Sensing and Land Use
- Geological formations and processes
- Asymmetric Hydrogenation and Catalysis
- Network Security and Intrusion Detection
- Geological Modeling and Analysis
- Advanced Computational Techniques and Applications
- Environmental Changes in China
- Inertial Sensor and Navigation
- Seismic Imaging and Inversion Techniques
Second Institute of Oceanography
2015-2025
Ministry of Natural Resources
2019-2025
Macau University of Science and Technology
2024
Shandong University of Science and Technology
2024
Chinese Academy of Sciences
2006-2021
China Centre for Resources Satellite Data and Application
2021
Dalian Institute of Chemical Physics
2021
Dalian University
2021
Qinghai University
2020
South Ural State University
2020
Bathymetry (seafloor depth), is a critical parameter providing the geospatial context for multitude of marine scientific studies. Since 1997, International Bathymetric Chart Arctic Ocean (IBCAO) has been authoritative source bathymetry Ocean. IBCAO merged its efforts with Nippon Foundation-GEBCO-Seabed 2030 Project, goal mapping all oceans by 2030. Here we present latest version (IBCAO Ver. 4.0), more than twice resolution (200 × 200 m versus 500 m) and individual depth soundings...
Abstract The Southern Ocean surrounding Antarctica is a region that key to range of climatic and oceanographic processes with worldwide effects, characterised by high biological productivity biodiversity. Since 2013, the International Bathymetric Chart (IBCSO) has represented most comprehensive compilation bathymetry for south 60°S. Recently, IBCSO Project combined its efforts Nippon Foundation – GEBCO Seabed 2030 supporting goal mapping world’s oceans 2030. New datasets initiated second...
Public health surveillance systems provide valuable data for reliable predication of future epidemic events. This paper describes a study that used nine types infectious disease collected through national public system in mainland China to evaluate and compare the performances four time series methods, namely, two decomposition methods (regression exponential smoothing), autoregressive integrated moving average (ARIMA) support vector machine (SVM). The obtained from 2005 2011 2012 were as...
Crustal accretion at mid-ocean ridges governs the creation and evolution of oceanic lithosphere. Generally accepted models1–4 passive mantle upwelling melting predict notably decreased crustal thickness a spreading rate less than 20 mm year−1. We conducted first, to our knowledge, high-resolution ocean-bottom seismometer (OBS) experiment Gakkel Ridge in Arctic Ocean imaged structure slowest-spreading ridge on Earth. Unexpectedly, we find that ranges between 3.3 km 8.9 along axis it increased...
Abstract It is well known that ultraslow-spreading mid-ocean ridges display significant variations in axial magmatism and tectonics. Yet, the processes governing mantle melting melt transport remain a subject of ongoing debate. A key limitation has been lack contrasting observations beneath segment centers versus ends, particularly through electromagnetic methods, which are highly sensitive to partial molten mantle. Here, we present first one-dimensional magnetotelluric observation conducted...
The mid-ocean ridge forms new oceanic lithosphere, which subsides, thickens, and moves away from the axis. It is generally believed that lithospheric thickness dependent on spreading rate. At ultraslow-spreading ridges (
Volcanic feature identification on topographic maps is an emerging area that can leverage advanced machine learning techniques. However, the field faces challenges due to scarcity of current labeled volcanic data, class imbalances, and limitations in existing models. Current approaches often fail effectively capture spatial continuity hierarchical patterns inherent terrains, particular for intraplate volcanism such as petit-spot volcanoes.This study began with manually data employed Support...
To characterize mid-ocean microseisms in the Arctic Ocean and explore potential seismic ambient noise imprint of warming, this study analyzes records from nine ocean bottom seismometers (OBSs) deployed along eastern Gakkel Ridge during Joint Scientific Middle-ocean ridge Insight Expedition (JASMInE) August 2021. In period band single frequency (10–20 s), typically produced by waves directly impacting coastlines, no prominent spectral peaks are observed. double microseism (DFM)...
A simple, cost‐effective method for deuteration of carbonyl compounds employing pyrrolidine as catalyst and D 2 O deuterium source was described. High degree incorporation (up to 99%) extensive functional group tolerance were achieved. It is the first time that secondary amines are used catalysts H/D exchange compounds, which also allow complex pharmaceutically interesting substrates. possible catalytic mechanism, based on hydrolysis 1‐pyrrolidino‐1‐cyclohexene, this pyrrolidine‐catalyzed...
The mid-ocean ridge (MOR) is the longest volcanic chain on Earth (∼75,000 km), with spreading rates varying from fast (>80 mm/yr) to ultraslow (100 Ω m) down ~ 50 km at ends, indicating highly variable electrical lithosphere (eLAB). Microearthquakes recorded by OBSs occurred depths of
During active-source 2D marine ocean bottom seismic exploration, significant deviations of shot lines from the designed survey can introduce errors in structural models, particularly areas with rough bathymetry, such as mid-ocean ridges. By employing 3D tomography, it is possible to construct a three-dimensional model area that incorporates actual locations and Ocean Bottom Seismometer (OBS) positions, leading more accurate velocity structure models.In 2021, Joint Arctic Scientific Mid-Ocean...
Extinct spreading ridges are globally widespread and crucial to understanding the lifespan of oceanic plates. Yet nature LAB beneath extinct remains enigmatic. In this study, we investigate structure SCS basin, where a ~700-km-long ridge system stopped at ~15 Ma. A 120 km long marine magnetotelluric (MT) transect perpendicular mid-ocean in southwest sub-basin was carried out September 2021. The electrical resistivity model reveals relatively low-resistivity layer depths 50-80 km, potentially...
In the summer of 2024, we conducted first magnetotelluric (MT) profile survey beneath sea ice at ultraslow spreading Gakkel Ridge. A total 17 MT instruments were deployed for approximately 20 days along a 125 km across ridge axis 100°E. This spanned 0–14 Ma lithosphere north Preliminary analysis reveals zone high electrical conductivity depths 30–50 axis, attributed to high-degree partial melting zone. more striking feature is abrupt deepening lithospheric base...
The Gakkel Ridge in Arctic Ocean is the slowest spreading ridge on earth, representing end-member of global oceanic crustal accretion at all rates. Wide-angle seismic experiment most directive way to map lithospheric structure, which turn provides key information about formation and driving mechanism. In 2021, JASMInE Expedition carried out first wide-angle reflection/refraction along from 75° 102°E, was thought be impossible with high ice cover. A series domestic equipment specific...
The Indomed-Gallieni supersegment (46-52°E) of the Southwest Indian Ridge (SWIR) has been interest as a melt-rich endmember ultraslow spreading mid-ocean ridges, attributed to enhanced magmatism since 11 Ma. This provides an excellent opportunity study evolution and impact at ridges. Here we combine shipboard bathymetry gravity data over SWIR 46-53.5°E. We illustrate that initiated in western part with decreasing crustal productions no propagation. In eastern part, propagated east...
Abstract The origin and history of the Amerasia basin are long‐running debates, which hinder our knowledge Mesozoic tectonic configurations geodynamic processes in Arctic. This lack is due part to paucity accurate magnetic data ice‐covered basin. Here, we identify crustal age Canada Basin, a major through high‐resolution deep‐tow sea‐surface data. best fit four pairs lineations revealed by 139.5–128.6 Ma (or 142.4–132.8 Ma, depending on geomagnetic polarity timescale). provides crucial...
To understand the influence of sea ice on shipborne gravity measurements and accuracy satellite-altimetry-derived field in Arctic Ocean, we compared with those obtained from satellite altimetric measurements. The was mainly concentrated 0–6 km wavelength range, standard deviation noise amplitudes 2.62 mGal. Compared to ice-free regions, accuracies region floating were reduced by 13% for DTU21 6% SV31. Due ice, data lose significant information 9–12 range. coherence curve bathymetry nearly...
Abstract Beneath mid‐ocean ridges, mantle upwelling and decompression melting are fundamental processes contributing to the formation of oceanic crust. Previous geodynamic models have suggested that driven by separating plates can be intensified thermochemical buoyancy thickening aging lithosphere, resulting in thicker However, relative contributions these factors crustal accretion remain uncertain. We conducted numerical modeling three scenarios investigate this: (a) buoyant flow...
With the unified and strong smart grid construction by State Grid Corporation of China, information security protection architecture is facing new challenges. The characteristics such as informationization, automation, interaction, have enhanced two-way interaction between consumers. design method in U.S. Smart requirements China Gird risks were proposed analyzed. An model overall strategy considering requirements. Based on this model, framework was designed to support grid. consists four...
The strapdown gravimetry system uses the combination of an Inertial Measuring Unit (IMU) and a Global Navigation Satellite System (GNSS) to measure Earth's gravity field. Due limited accuracies IMU GNSS, early systems were more often used in airborne surveys, but less marine surveys. We developed inertial navigation (SINS), Sea-Air Gravimeter-2Marine (SAG-2M), using novel components, whose accuracy was further improved with application Precise Point Positioning (PPP) enhanced algorithm,...