Wind regime and aeolian sand transport in Khuzestan Sand Sea

IF 3.1 3区地球科学 Q2 GEOGRAPHY, PHYSICAL

Aeolian Research Pub Date : 2021-09-01 DOI:10.1016/j.aeolia.2021.100746

H.R. Abbasi , C. Opp , M. Groll , A. Gohardoust , H. Rouhipour

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引用次数: 4

Abstract

The Khuzestan Sand Sea extends from the Wasit and Maysan provinces in Iraq (22%) to the Ilam (10%) and Khuzestan (68%) provinces in Iran. In order to determine wind regimes and sand transport characteristics, hourly wind data records from 21 meteorological stations for the period 2000–2016 were analyzed using aeolian-sediment transport methods. The analysis of the wind energy based on drift potential (DP) revealed rather large spatial variations in the Khuzestan Sand Sea. The Iraqi part of the desert, as well as the southern regions of the Ilam province and the western edge of the Khuzestan province were characterized by particularly high wind energy (DP greater than 400), while towards the central area of the Khuzestan Sand Sea near Ahvaz city a sharp decrease to DP less than 200 was detected. In the southern and southeastern parts of the Khuzestan Province, the wind energy increased again and the DP reached more than 200 vector units. The temporal analysis of the DP showed no considerable temporal trends between 2000 and 2014 in this study area. The dune morphology analysis revealed a bimodal wind regime, which was also supported by the dominance of sand sheets and transverse dunes. Additionally, the local topography has an important influence on the formation of topographic dunes in the southeastern parts of the Sand Sea.

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胡齐斯坦沙海风况与风沙输运

Khuzestan沙海从伊拉克的Wasit和Maysan省(22%)延伸到伊朗的Ilam(10%)和Khuzestan(68%)省。为了确定风况和沙输运特征，采用风沙输运方法分析了2000-2016年21个气象站逐时风数据记录。基于漂移势(DP)的风能分析表明，胡齐斯坦沙海的空间变化较大。伊拉克沙漠部分，以及伊拉姆省南部地区和胡齐斯坦省西部边缘的特点是风能特别高(DP大于400)，而在靠近阿瓦士市的胡齐斯坦沙海中心地区，发现DP急剧下降到小于200。在胡齐斯坦省的南部和东南部，风能再次增加，DP达到200多个矢量单位。2000 - 2014年，研究区DP的时间变化趋势不明显。沙丘形态分析显示出双峰风势，且以沙片和横向沙丘为主。此外，局部地形对沙海东南部地形沙丘的形成也有重要影响。

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来源期刊

Aeolian Research GEOGRAPHY, PHYSICAL-

CiteScore

7.10

自引率

6.10%

发文量

审稿时长

>12 weeks

期刊介绍： The scope of Aeolian Research includes the following topics: • Fundamental Aeolian processes, including sand and dust entrainment, transport and deposition of sediment • Modeling and field studies of Aeolian processes • Instrumentation/measurement in the field and lab • Practical applications including environmental impacts and erosion control • Aeolian landforms, geomorphology and paleoenvironments • Dust-atmosphere/cloud interactions.