Observation of saltation activity at Tazhong area in Taklimakan Desert, China
Observation of saltation activity at Tazhong area in Taklimakan Desert, China
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DOI：
10.1007/s40333-013-0139-1
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发表时间：
2013-03
影响因子：
3
通讯作者：
Xing-hua Yang;Ali Mamtimin;Qing He;Xinchun Liu;W. Huo
中科院分区：
文献类型：
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作者：
Xing-hua Yang;Ali Mamtimin;Qing He;Xinchun Liu;W. Huo
对沙尘暴频发的塔克拉玛干沙漠腹地塔中地区的跃迁活动进行了为期两年的野外观测。从2008年9月1日至2010年8月31日，使用压电式跃变传感器(SENSIT)连续收集了水平沙面上的跃变活动数据。对数据的分析表明，在一年中的任何时候，只要条件有利，就可以发生跃迁活动；然而，在大多数时间里，必要条件很少得到满足。在春天或夏天的白天，跃迁活动甚至可以持续一个小时左右的时间。研究发现，从2008年9月1日到2010年8月31日，跃迁活动占全年总时数的3%以上，且在春夏季大风季节达到高峰。然而，在风很弱的冬季月份，气温往往是最低的。在像塔中这样的干旱地区，降水似乎对减少跃迁活动并不明显。
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.