Zhiwen Dong
A5030425611- Cryospheric studies and observations
- Geology and Paleoclimatology Research
- Atmospheric chemistry and aerosols
- Polar Research and Ecology
- Geochemistry and Elemental Analysis
- Climate change and permafrost
- Geomagnetism and Paleomagnetism Studies
- Atmospheric aerosols and clouds
- Radioactivity and Radon Measurements
- Mercury impact and mitigation studies
- Heavy metals in environment
- Dark Matter and Cosmic Phenomena
- Aeolian processes and effects
- Solar and Space Plasma Dynamics
- Groundwater and Isotope Geochemistry
- Atmospheric and Environmental Gas Dynamics
- Smart Materials for Construction
- Astro and Planetary Science
- Radioactive contamination and transfer
- Methane Hydrates and Related Phenomena
- Per- and polyfluoroalkyl substances research
- Arctic and Antarctic ice dynamics
- Geochemistry and Geologic Mapping
- Climate variability and models
- Air Quality and Health Impacts
China University of Geosciences
2018-2025
Chinese Academy of Sciences
2015-2024
Northwest Institute of Eco-Environment and Resources
2015-2024
Yantai University
2024
University of Cologne
2018-2023
University of Chinese Academy of Sciences
2010-2023
Chongqing University
2023
Chongqing Technology and Business University
2023
Qingdao University of Science and Technology
2023
Center for Excellence in Tibetan Plateau Earth Sciences
2019-2022
A measurement of the cosmic ray positron fraction e+/(e++e−) in energy range 1–30 GeV is presented. The based on data taken by AMS-01 experiment during its 10 day Space Shuttle flight June 1998. proton background suppression order 106 reached identifying converted bremsstrahlung photons emitted from positrons.
Wind-blown dust derived from the arid and semi-arid regions is an important atmospheric component affecting Earth's radiation budget. Dust storms are prevailing in central Asia. Deposition of snow was measured on Glacier No.12 (5040 m a.s.l.) Laohugou Basin Shiyi (4510 Yeniugou Basin, western Qilian Mountains, China, mainly focusing concentration size distribution, chemistry, SEM–EDX analysis Nd–Sr isotopic composition. An spatial distribution cover at two sites suggests that deposition...
Abstract This study presents the Nd‐Sr isotopic compositions and size distributions of cryoconite deposited on glaciers at different locations Tibetan Plateau, in order to trace its source areas provenance long‐range transported (LRT) Asian dust Plateau. The result scanning electron microscope‐energy dispersive X‐ray spectrometer analysis indicated that mineral particles were dominant cryoconite. Most samples from Plateau Sr Nd composition compared with sand large deserts (e.g., Taklimakan...
Atmospheric heavy metals have important environmental and health threats. To investigate atmospheric deposition contamination of metal elements in the glaciers eastern Tibetan Plateau (ETP), we collected surface snow (cryoconites) samples Lenglongling Glacier (LG), Gannan Snowpack (GS), Dagu (DG), Hailuogou (HG) Yulong Snow-mountain (YG) summer 2017. Samples were analyzed for concentrations enrichment factors (EFs) Al trace (Pb, Co, Cd, Ba, Mn, Ga, Sc, V, Zn, Cr, Ni, Cu, Rb, Sb, Cs, As, Mo,...
Measurement of the chemical and isotopic composition cosmic rays is essential for precise understanding their propagation in galaxy. While model parameters are mainly determined using B/C ratio, study extended sets ratios can provide stronger constraints on models. In this paper, relative abundances light-nuclei lithium, beryllium, boron, carbon presented. The secondary-to-primary Li/C, Be/C, have been measured kinetic energy range 0.35–45 GeV nucleon−1. ratio 7Li/6Li also magnetic rigidity...
The variety of isotopes in cosmic rays allows us to study different aspects the processes that undergo between time they are produced and their arrival heliosphere. In this paper, we present measurements isotopic ratios 2H/4He, 3He/4He, 6Li/7Li, 7Be/(9Be+10Be), 10B/11B range 0.2–1.4 GeV kinetic energy per nucleon. based on data collected by Alpha Magnetic Spectrometer, AMS-01, during STS-91 flight 1998 June.
Large areas of arid regions in the Tibetan Plateau (TP) are undergoing desertification and subsequent aeolian emission transport. The contribution TP soils to atmospheric aerosol burden Asia elsewhere is not known. Here, we use Hf, Nd, Sr isotopes distinguish from other Asian dust-producing compare signatures sediments major dust sink regions. We found that Hf–Nd–Sr showed unique spatial signatures. From north south, 87Sr/86Sr ratios gradually increased, while εNd εHf values decreased; west...
Abstract Wind-blown mineral aerosol dust derived from the crustal surface is an important atmospheric component affecting Earth’s radiation budget. Deposition of water-insoluble was determined in snow deposited on Ürümqi glacier No. 1, Haxilegen 51 and Miaoergou glacier, eastern Tien Shan, China. Analysis horizontal distribution depth concentration, flux particles cover suggests that deposition differs each these glaciers as environment changes west to east. Mean mass concentrations...