Observation of saltation activity at Tazhong area in Taklimakan Desert,China  

作　　者：Ali MAMTIMIN 

机构地区：[1]Institute of Desert Meteorology,China Meteorological Administration [2]Desert Atmosphere and Environment Observation Experiment of Taklimakan Station

出　　处：《Journal of Arid Land》2013年第1期32-41,共10页干旱区科学（英文版）

基　　金：funded by the National Natural Science Foundation of China (41175017,41175140);the R & DSpecial Fund for Public Welfare Industry (meteorology)(GYHY201006012,GYHY201106025)

摘　　要：A two-year field observation of saltation activity was carried out at Tazhong area, the hinterland area of the Taklimakan Desert with highly frequent dust storms. From 1 September 2008 to 31 August 2010, a piezoelectric saltation sensor （Sensit） was used to continuously collect the data on saltation activity at a level sand surface. Analysis on the data suggests that saltation activity can occur at any time of the year when conditions are favorable; however, the necessary conditions are rarely satisfied in most time. In the daytime of spring or summer, saltation activity can persist even over a continuous one-hour-or-so period. It is found that, from 1 September 2008 to 31 August 2010, saltation activity accounts for more than 3% of the total yearly time, and it tends to peak in spring and summer months with strong winds. During winter months when winds are weak, however, it is often at a minimum. It seems that precipitation does not appear to be significant in reducing saltation activity in arid regions like Tazhong.A two-year field observation of saltation activity was carried out at Tazhong area, the hinterland area of the Taklimakan Desert with highly frequent dust storms. From 1 September 2008 to 31 August 2010, a piezoelectric saltation sensor （Sensit） was used to continuously collect the data on saltation activity at a level sand surface. Analysis on the data suggests that saltation activity can occur at any time of the year when conditions are favorable; however, the necessary conditions are rarely satisfied in most time. In the daytime of spring or summer, saltation activity can persist even over a continuous one-hour-or-so period. It is found that, from 1 September 2008 to 31 August 2010, saltation activity accounts for more than 3% of the total yearly time, and it tends to peak in spring and summer months with strong winds. During winter months when winds are weak, however, it is often at a minimum. It seems that precipitation does not appear to be significant in reducing saltation activity in arid regions like Tazhong.

关 键 词：saltation activity aeolian sand transport piezoelectric saltation sensor （Sensit） TAZHONG Taklimakan Desert 

分 类 号：P931.3[天文地球—自然地理学]