A5103088222- Geology and Paleoclimatology Research
- Isotope Analysis in Ecology
- Archaeology and ancient environmental studies
- Pleistocene-Era Hominins and Archaeology
- Atmospheric and Environmental Gas Dynamics
- Geological formations and processes
- Atmospheric chemistry and aerosols
- Radioactive contamination and transfer
- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
- Advanced Combustion Engine Technologies
- Tree-ring climate responses
- Combustion and flame dynamics
- Coastal wetland ecosystem dynamics
- Radioactivity and Radon Measurements
- Air Quality and Health Impacts
- Pacific and Southeast Asian Studies
- Peatlands and Wetlands Ecology
- Combustion and Detonation Processes
- Hydrocarbon exploration and reservoir analysis
- Climate variability and models
- Superconducting Materials and Applications
- Groundwater and Isotope Geochemistry
- Atmospheric Ozone and Climate
- Geological and Geophysical Studies
Xi'an Jiaotong University
2016-2025
Institute of Earth Environment
2016-2025
Chinese Academy of Sciences
2015-2024
Qingdao National Laboratory for Marine Science and Technology
2019-2024
China XD Group (China)
2010-2024
State Key Laboratory of Loess and Quaternary Geology
2016-2024
ZheJiang Academy of Agricultural Sciences
2024
Ministry of Agriculture and Rural Affairs
2024
Sichuan International Studies University
2024
Xidian University
2024
Two atmospheric circulation systems, the mid-latitude Westerlies and Asian summer monsoon (ASM), play key roles in northern-hemisphere climatic changes. However, variability of Asia their relationship to ASM remain unclear. Here, we present longest highest-resolution drill core from Lake Qinghai on northeastern Tibetan Plateau (TP), which uniquely records both since 32 ka, reflecting interplay these two systems. These document anti-phase for glacial-interglacial glacial millennial...
The magnitude, rate, and extent of past future East Asian monsoon (EAM) rainfall fluctuations remain unresolved. Here, late Pleistocene-Holocene EAM intensity is reconstructed using a well-dated northeastern China closed-basin lake area record located at the modern northwestern fringe EAM. northern alternated rapidly between wet dry periods on time scales centuries. Lake levels were 60 m higher than present during early middle Holocene, requiring twofold increase in annual rainfall, which,...
Abstract Changes in the intensity of East Asian summer monsoon (EASM) are critical for regulating regional hydrology, ecology, and human civilization, especially vicinity limit (SML). However, detailed spatial variations SML mainland China over past 2000 years uncertain due to lack high-resolution paleoclimate archives. As a result, accurate location during transition from Medieval Warm Period (MWP) Little Ice Age (LIA), as well its impacts on ecology society, poorly understood. Here, we...
Sihailongwan Maar Lake, located in Northeast China, is a candidate Global boundary Stratotype Section and Point (GSSP) for demarcation of the Anthropocene. The lake’s varved sediments are formed by alternating allogenic atmospheric inputs authigenic lake processes store record environmental human impacts at continental-global scale. Varve counting radiometric dating provided precise annual-resolution sediment chronology site. Time series records radioactive ( 239,240 Pu, 129 I soot 14 C),...
An accelerator-driven subcritical system (ADS) program was launched in China 2011, which aims to design and build an ADS demonstration facility with the capability of more than 1000 MW thermal power multiple phases lasting about 20 years. The driver linac is defined be 1.5 GeV energy, 10 mA current cw operation mode. To meet extremely high reliability availability, designed much installed margin fault tolerance, including hot-spare injectors local compensation method for key element...
Abstract. Rapid monsoon changes since the last deglaciation remain poorly constrained due to scarcity of geological archives. Here we present a high-resolution scanning X-ray fluorescence (XRF) analysis 13.5 m terrace succession on western Chinese Loess Plateau (CLP) infer rapid deglaciation. Our results indicate that Rb∕Sr and Zr∕Rb are sensitive indicators chemical weathering wind sorting, respectively, which further linked strength East Asian summer (EASM) winter (EAWM). During...
Microplastics (MPs) are emerging pollutants, and limited research has focused on their exposure to terrestrial wildlife transport mode the remote Tibetan Plateau (TP). Therefore, we investigated MPs in southern soil feces of Equus kiang (Tibetan wild ass), a species peculiar TP, which is known as "third pole." We found that MP median abundances were 102 4.01 particles/g dry soil, respectively. In both media, morphology mainly comprised ∼50 μm slender fibrous particles. total, 29 types...
Level and transport regime of radioactive pollutants are scarcely understood at the remote high-altitude Tibetan Plateau (TP), which is well-known third pole. Radioactive 129I a major fission product, highly volatile, spreads globally is, therefore, perfect tracer human nuclear contamination. Atmospheric levels were investigated by mosses lichens from southern (STP). (203 ± 274) × 106 atoms/g (175 142) 10–10 for 129I/127I atomic ratios first presented in STP, considerably greater than...
Atmospheric methane concentrations decreased during the early to middle Holocene; however, governing mechanisms remain controversial. Although it has been suggested that mid-Holocene minimum emissions are associated with hydrological change, direct evidence is lacking. Here we report a new independent approach, linking change in peat sediments from Tibetan Plateau changes archaeal diether and diploptene δ(13)C values as tracers for methanogenesis methanotrophy, respectively. A inferred...
Radiocarbon accelerator mass spectrometry (AMS) techniques were used to date total organic carbon and plant seeds in the lFs core sequence (36°48′N, 100°08′E) from Qinghai Lake, China. This was drilled ∼18 m into Lake sediments as part of an international cooperative research project, “Scientific Drilling at Northeastern Tibetan Plateau: High-Resolution Paleoenvironmental Records Eastern Asia Linked Global Change,” which began 2004. Based on differences lithology content (TOC) lFs, divided 3...
In this study we report changes in Indian summer monsoon (ISM) intensity during the past ~ 3500 yr inferred from proxy indices at Lake Erhai, southwestern China. Both pollen concentrations and other indices, including sediment grain size, total organic carbon contents (TOC), elemental (e.g., Fe, Al), clearly indicate a long term decreasing trend ISM over late Holocene. During period approximately AD 750 to 1200, of conifer broadleaf trees, herbs reached lowest levels yr; while percentages...
An experimental study on the cellular instability of spherical propagation syngas flames with H2O addition was performed in a constant volume combustion bomb over wide range CO/H2 ratios at elevated pressures. Schlieren images were recorded to observe and analyze flame front evolution flames. Results show that is promoted atmospheric pressure suppressed for mixtures ratio 80/20. At pressure, critical radius, beyond which starts accelerate, increases higher 65/35 50/50, while decreases lower...
Abstract Knowledge of spatial and temporal hydroclimatic differences is critical in understanding climatic mechanisms. Here we show striking contrasts between northern southern parts the eastern margin Tibetan Plateau (ETP), those East Asian summer monsoon (EASM) Indian (ISM) areas during past ~2,000 years. During Medieval Period, last 100 to 200 years, ETP (S-ETP) area was generally dry (on average), while (N-ETP) wet. Little Ice Age (LIA), hydroclimate over S-ETP wet, that N-ETP average)....
A 3MV multi-element accelerator mass spectrometer (AMS) has been installed in Xi'an, China, and preliminary tests have completed. The results of both background precision for 4 nuclides are 3.1 × 10 –16 , 0.2% ( 14 C); 1.8 –14 1.4% Be); 2.3 –15 1.14% 26 Al); 2.0 1.75% 129 I). unique features this facility the newly developed ion source accepting solid CO 2 samples; specially designed low-energy injector, including a “beam blanking unit” “Q-snout”; acceleration tube structure with combined...