Sand flux estimation during a sand-dust storm at Tazhong area of Taklimakan Desert, China
XingHua YANG, XiaoLiang XU, Qing HE, Ali Mamtimin, Bo YU, ShiHao TANG
1 Institute of Desert Meteorology, China Meteorological Administration, Urumqi 830002, China; 2 Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; 3 Desert Atmosphere and Environment Observation Experiment of Taklimakan Station, Tazhong 841000, China; 4 Graduate University of Chinese Academy of Sciences, Beijing 100049, China; 5 National Satellite Meteorological Center, China Meteorological Administration, Beijing100081, China
Sand flux estimation during a sand-dust storm at Tazhong area of Taklimakan Desert, China
XingHua YANG, XiaoLiang XU, Qing HE, Ali Mamtimin, Bo YU, ShiHao TANG
1 Institute of Desert Meteorology, China Meteorological Administration, Urumqi 830002, China; 2 Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; 3 Desert Atmosphere and Environment Observation Experiment of Taklimakan Station, Tazhong 841000, China; 4 Graduate University of Chinese Academy of Sciences, Beijing 100049, China; 5 National Satellite Meteorological Center, China Meteorological Administration, Beijing100081, China
摘要 In this paper, the sand transport during a sand-dust storm in the Tazhong area of the central Taklimakan Desert from 11:29 to 23:56 on July 19, 2008 was observed and measured in real time. The sand flux at Tazhong was estimated using sand transport empirical formulas. The critical friction velocity at Tazhong was 0.24 m/s and the functional relation between the wind speed and sediment discharge at the height of 2 m was established. It was also found that the calculated values by Lettau's sediment discharge formula were close to those of the instrument measurements. The horizontal sand flux and the vertical sand flux during this sand-dust storm at Tazhong were respectively 258.67×10-4 kg/(m·s) and 40.07×10-7 kg/(m2·s).
Abstract: In this paper, the sand transport during a sand-dust storm in the Tazhong area of the central Taklimakan Desert from 11:29 to 23:56 on July 19, 2008 was observed and measured in real time. The sand flux at Tazhong was estimated using sand transport empirical formulas. The critical friction velocity at Tazhong was 0.24 m/s and the functional relation between the wind speed and sediment discharge at the height of 2 m was established. It was also found that the calculated values by Lettau's sediment discharge formula were close to those of the instrument measurements. The horizontal sand flux and the vertical sand flux during this sand-dust storm at Tazhong were respectively 258.67×10-4 kg/(m·s) and 40.07×10-7 kg/(m2·s).
基金资助: National Key Technology R＆D Program (2008BAC40B05-01; National Department of Public Benefit (Meteorology) Research Foundation (GYHY 201006012); Science and Technology Key Project of Xinjiang Uygur autonomous region (200833119); Research Foundation of China Desert Meteorology (Sqj2010014, Sqj2010007); Meteorological New Technology Projects of China Meteorological Administration (CMATG2010M29); Research Foundation of China Arid Meteorology (IAM201013)
通讯作者:
XingHua YANG
E-mail: yxh19820218@163.com
引用本文:
XingHua YANG, XiaoLiang XU, Qing HE, Ali Mamtimin, Bo YU, ShiHao TANG. Sand flux estimation during a sand-dust storm at Tazhong area of Taklimakan Desert, China[J]. 干旱区科学, 10.3724/SP.J.1227.2011.00199.
XingHua YANG, XiaoLiang XU, Qing HE, Ali Mamtimin, Bo YU, ShiHao TANG. Sand flux estimation during a sand-dust storm at Tazhong area of Taklimakan Desert, China. Journal of Arid Land, 2011, 3(3): 199-205.
