新疆巴里坤鸣沙山风成沉积物粒度特征

doi:10.7522/j.issn.1000-694X.2016.00062

摘要/Abstract

摘要： 对新疆巴里坤鸣沙山风成沉积物粒度进行了分析，并对其特征进行了探讨。结果表明：巴里坤鸣沙山风成沉积物以中沙为主，分选较好，偏度值接近0，峰态很窄。概率累积曲线揭示风成沉积物碎屑颗粒的主要搬运方式为跃移，所占比例为40%~95%。沿沙脊-山坡-山脚的方向，平均粒径逐渐变大，分选性变差，蠕移组分含量增加。粒度具有分形特征，分维值平均为0.94，与常见碎屑物质相比，处于较低的水平。分维值与标准偏差显著相关，说明分选程度会对分形特征产生影响。

关键词: 巴里坤鸣沙山, 沙漠, 粒度, 分形

Abstract: Grain size of aeolian sediments from Balikun Mingshashan Desert, Xinjiang was analyzed, and its features were discussed in the present study. The results show that medium-size sands are the predominate component in the sediments. Frequency distribution curves of grain size of those deposits are nearly symmetrical, well-sorted and very leptokurtic. Probability cumulative curves reveal that the grains mainly move in the form of saltation, which accounts for approximately 40%-95%. Along the downward direction from sand ridge to the foot of the sand dune, mean grain sizes of the sediments increase gradually. Ratio of coarse component also elevates, but sorting of the grains becomes poor. The mean fractal dimension is 0.94, which is relatively low in comparison with some common detritus. A significant positive correlation between fractal dimension and standard deviation implies potential impact of sorting degree on fractal characteristics.

Key words: Balikun Mingshashan Desert, desert, grain size, fractal dimension

中图分类号:

P931.3

徐利强. 新疆巴里坤鸣沙山风成沉积物粒度特征[J]. 中国沙漠, 2017, 37(5): 836-842.

Xu Liqiang. Grain Size Features for Aeolian Sediments from Balikun Mingshashan Desert, Xinjiang, China[J]. JOURNAL OF DESERT RESEARCH, 2017, 37(5): 836-842.

参考文献

[1] 沈吉,薛滨,吴敬禄,等.湖泊沉积与环境演化[M].北京:科学出版社,2010.
[2] 陈敬安,万国江,张峰,等.不同时间尺度下的湖泊沉积物环境记录——以沉积物粒度为例[J].中国科学:D辑,2003,33(6):563-568.
[3] 郑洪波,陈国成,谢昕,等.南海晚第四纪陆源沉积:粒度组成,动力控制及反映的东亚季风演化[J].第四纪研究,2008,28(3):414-424.
[4] Hao Q,Wang L,Oldfield F,et al.Delayed build-up of Arctic ice sheets during 400,000-year minima in insolation variability[J].Nature,2012,490(7420):393-396.
[5] 舒培仙,牛东风,李保生,等.毛乌素沙地现代沙丘沙的粒度特征及其意义[J].中国沙漠,2016,36(1):158-166.
[6] 沈亚萍,张春来,李庆,等.中国东部沙区表层沉积物粒度特征[J].中国沙漠,2016,36(1):150-157.
[7] Pan B,Pang H,Zhang D,et al.Sediment grain-size characteristics and its source implication in the Ningxia-Inner Mongolia sections on the upper reaches of the Yellow River[J].Geomorphology,2015,246:255-262.
[8] 李恩菊,董治宝,赵景波.巴丹吉林沙漠典型高大沙山迎风坡粒度特征[J].干旱区地理,2011,34(3):471-478.
[9] Wang X,Dong Z,Zhang J,et al.Grain size characteristics of dune sands in the central Taklimakan Sand Sea[J].Sedimentary Geology,2003,161(1):1-14.
[10] Ding Z,Yu Z,Rutter NW,et al.Towards an orbital time scale for Chinese loess deposits[J].Quaternary Science Reviews,1994,13(1):39-70.
[11] Qiao Y,Guo Z,Hao Q,et al.Grain-size features of a Miocene loess-soil sequence at Qinan:implications on its origin[J].Science in China,2006,49(7):731-738.
[12] 柏春广,王建.一种新的粒度指标:沉积物粒度分维值及其环境意义[J].沉积学报,2003,21(2):234-239.
[13] Zhang R,Wang Y,Gao J,et al.Sediment texture and grain-size implications:the Changjiang subaqueous delta[J].Acta Oceanologica Sinica,2009,28(4):38-49.
[14] Ling Y,Zhou C H,Li X Y.Influence of microwave and ultrasound on sludge dewaterability[C]//International Conference on Material and Environmental Engineering.Paris,France:Atlantis Press,2014.
[15] 何清,杨兴华,霍文,等.库姆塔格沙漠粒度分布特征及环境意义[J].中国沙漠,2009,29(1):18-22.
[16] 张号,张克存,安志山,等.敦煌月牙泉景区沙丘粒度特征[J].中国沙漠,2014,34(3):645-649.
[17] 陈渭南,雷加强.塔克拉玛干沙漠新月形沙丘不同部位的粒度特征[J].干旱区资源与环境,1992,6(2):101-108.
[18] 霍文,何清,杨兴华,等.中国北方主要沙漠沙尘粒度特征比较研究[J].水土保持研究,2011,18(6):6-11.
[19] 钱亦兵,吴兆宁,陈冬梅,等.准噶尔中南部沙尘暴源区地表沉积物粒度特征[J].中国沙漠,2005,25(6):831-837.
[20] Folk R L,Ward W C.Brazos River bar:a study in the significance of grain size parameters[J].Journal of Sedimentary Research,1957,27(1):3-26.
[21] Zhu C,Wang Z H,Xue B,et al.Characterizing the depositional settings for sedimentary organic matter distributions in the Lower Yangtze River-East China Sea Shelf System[J].Estuarine,Coastal and Shelf Science,2011,93(3):182-191.
[22] 哈斯,王贵勇.沙坡头地区新月形沙丘粒度特征[J].中国沙漠,2001,21(3):271-275.
[23] 哈斯,庄燕美,王蕾,等.毛乌素沙地南缘横向沙丘粒度分布及其对风向变化的响应[J].地理科学进展,2006,25(6):42-51.
[24] 哈斯,王贵勇.腾格里沙漠东南缘横向沙丘粒度变化及其与坡面形态的关系[J].中国沙漠,1996,16(3):215-220.
[25] 陈冬梅,穆桂金.不同沉积环境下沉积物的粒度分形特征的对比研究[J].干旱区地理,2004,27(1):47-51.
[26] 赵梅.黄海中部海岸末次冰盛期第1硬质黏土层的粒度分维特征及其环境意义[J].海洋地质动态,2008,24(10):8-13.
[27] 徐利强,徐芳,周涛发.巢湖沉积物粒度特征及其沉积学意义[J].地理科学,2015,35(10):1318-1324.