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040			_aMSU _cMSU _erda
100			_aDONG, Zhibao
245			_aGeomorphology of star dunes in the southern Kumtagh Desert, China: control factors and formation
264			_aVerlag _bSpringer _c2013
336			_2rdacontent _atext _btxt
337			_2rdamedia _aunmediated _bn
338			_2rdacarrier _avolume _bnc
440			_aEnvironmental earth sciences _vVolume , number ,
520			_aStar dunes have received less study than other major dune types, though they are widely recognized to represent a major dune type that develops under a multi-directional wind regime. Several types that include simple, compound, and complex star dunes are identified in the south of China’s Kumtagh Desert. It is suggested that the formation and development of these star dunes is controlled by wind regime, the underlying and surrounding topography, and sediment availability. A complex wind regime and rich sediment availability are generally required for the development of star dunes. Especially, wind regime appears to be the most important control factor. The wind regime under which star dunes arise is characterized by the drift potential, amount of variability in drift direction, and the direction distribution mode of the drift potential. It is strongly suggested that a rectangular bimodal wind direction distribution mode has unique significance in star dune formation. Under this mode, star dunes can develop in areas with a directional variability index typical of linear dunes or even barchan dunes. A development model is proposed for star dunes based on the following evolution: barchan dunes → transverse ridges → dune networks → simple star dunes → compound star dunes → star dunes atop complex linear dunes.
650			_aeolian geomorphology
650			_adune types
650			_adevelopmental model of star dunes
700			_aZHANG, Zhengcai
700			_aQIAN, Guangqiang
700			_aLUO, Wanyin
700			_aLV, Ping
700			_aLU, Junfeng
856			_uhttps://doi.org/10.1007/s12665-012-1954-y
942			_2lcc _cJA
999			_c161710 _d161710