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12 results on '"Wang Fei-teng"'

11. Rapid mass loss and disappearance of summer-accumulation type hanging glacier

Author

X.U. Chun-hai, M.U. Jian-xin, LI Zhongqin, Wang Fei-teng, and Wang Puyu

Subjects
Atmospheric Science, Glacier terminus, Climate change, Management, Monitoring, Policy and Law, Hydrology (agriculture), Meteorology. Climatology, Hanging glaciers, skin and connective tissue diseases, Mass balance processes, Glacier disappearance, H1-99, Global and Planetary Change, geography, geography.geographical_feature_category, Elevation, Spatiotemporal pattern, Glacier, Terrestrial laser scanning, Snow, Tien Shan, Social sciences (General), Physical geography, sense organs, QC851-999, Geology
Abstract

Hanging glaciers hold the absolute dominant number in West China and their changes had important influences on local hydrology, sea-level rise and natural hazards (snow/ice avalanches). However, logistic and operational difficulties have resulted in the lack of in-situ-measured data, leaving us with poor knowledge of the changing behaviors of this type of glacier. Here, we presented the spatiotemporal pattern of seasonal and annual mass changes of a mid-latitude hanging glacier in the Tien Shan based on repeated terrestrial laser scanning (TLS) surveys during the period 2016‒2018. The distributed glacier surface elevation changes exhibited highly spatiotemporal variability, and the winter elevation changes showed slight surface lowering at the upper elevations and weak thickening at the glacier terminus, which was contrary to altitudinal elevation changing patterns at the summer and annual scales. Mass balance processes of the hanging glacier mainly occurred during summer and the winter mass balance was nearly balanced (−0.10 ± 0.15 m w.e.). The glacier exhibited more rapid mass loss than adjacent other morphological glacier and the estimated response time of the glacier to climate change was very short (6‒9 years), indicating hanging glaciers will experience rapid wastage and disappearance in the future even with climate change mitigation.

Published
2022

12. Spatial correlation of desorption events accelerates water exchange dynamics at Pt/water interfaces.

Author

Wang FT, Zhu JX, Liu C, Xiong K, Liu X, and Cheng J

Abstract

The altered solvation structures and dynamical properties of water molecules at the metal/water interfaces will affect the elementary step of an electrochemical process. Simulating the interfacial structure and dynamics with a realistic representation will provide us with a solid foundation to make a connection with experimental studies. To surmount the accuracy-efficiency tradeoff and provide dynamical insights, we use state-of-the-art machine learning molecular dynamics (MLMD) to study the water exchange dynamics, which are fundamental to adsorption/desorption and electrochemical reaction steps. We reproduce interfacial structures consistent with ab initio molecular dynamics (AIMD) results and obtain diffusion and reorientation dynamics in agreement with the experiment. We show that the hydrogen bonds at the interface become stronger than those in bulk water, which makes the diffusion, reorientation, and hydrogen-bond dynamics slower. Our findings reveal that the spatial correlation of desorption events, driven by the breaking and making of hydrogen bonds, accelerates water exchange dynamics. These dynamics occur on timescales of several hundred picoseconds at 337 K and 302 K. We take a solid step forward toward studying the in situ interface water dynamics and attribute the fast water exchange dynamics to the spatial correlation of the desorption events., Competing Interests: The authors declare no conflict of interest., (This journal is © The Royal Society of Chemistry.)

Published
2024
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