| Features of Sand-dust Deposits in Harbin City, China |
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| 作者姓名： | XIE Yuanyun ZHANG yan HE Kui ZHOU Jia KANG Chunguo |
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| 作者单位： | 1.College of Earth Sciences，Jilin University，Changchun 130061，China;2.Department of Geography，Harbin Normal University，Harbin 150080，China;3.Harbin Map Publishing Press，Harbin 150086，China;4.China University of Geosciences，Wuhan 430074，China;5.Departmemt of Geography，Harbin Institute，Harbin 150080，China |
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| 基金项目： | Under the auspices of Natural Science Fund of Heilongjiang Province (No. G0213), Heilongjiang Province Education Bureau (No. 11511132) |
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| 摘 要： | 1 Introduction The sand-dust storm weather, induced by special at- mospheric circulation in specifically geologic and geo- graphic environment, is disastrous one with little prob- ability and excessive harm. In China, the sand-dust storm frequency of every 10 years had increased from 4 times in the 1950s to 23 times in the 1990s (Zhuang et al., 2001). The sand-dust weather occurring in a large area of the northern China in the spring of 2002 had attracted much attention. People are gradually…
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| 关 键 词： | 哈尔滨 沙尘暴沉积物 颗粒成分 粒度分布 化学成分 |
| 收稿时间： | 2006-03-10 |
| 修稿时间： | 2006-10-15 |
Features of sand-dust deposits in Harbin city, China |
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| XIE Yuanyun ZHANG yan HE Kui ZHOU Jia KANG Chunguo.Features of Sand-dust Deposits in Harbin City, China[J].Chinese Geographical Science,2006,16(4):327-333. |
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| Authors: | Yuanyun Xie Yan Zhang Kui He Jia Zhou Chunguo Kang |
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| Institution: | (1) College of Earth Sciences, Jilin University, Changchun, 130061, China;(2) Department of Geography, Harbin Normal University, Harbin, 150080, China;(3) Harbin Map Publishing Press, Harbin, 150086, China;(4) China University of Geosciences, Wuhan, 430074, China;(5) Department of Geography, Harbin Institute, Harbin, 150080, China |
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| Abstract: | From the sedimentologic view, this paper analyses the grain-size distribution and the chemical composition of the deposits
from sand-dust storm, occurring in Harbin on March 20, 2002. The result indicates that there exist plentiful coarse matters
in the sand-dust deposits in Harbin, and the sand-dust composition presents obvious three peak distribution characteristics,
indicating that the sand-dust in Harbin is composed of multi-origin components. The grain-size composition consists of silt
(4–8Φ), accounting for 71.18% of the total, sand (>4Φ), 21.70%, and clay (<8Φ), only 7.13%. The average grain size (Mz) is 5.14Φ. The chemical elements of the deposits are mainly SiO2 and Al2O3 and Fe2O3, totally occupying 77.8%. The enrichment factors (EF) of Mg, K, Si, Fe, Mn, P, Ti, Co, Ni and V elements are all about 1, which mainly come from lithosphere source, while parts
of Cu, Pb, Zn, Cr and Se elements are from pollution sources out of lithosphere source, and As, Cd and Sb elements are mainly
from pollution sources. Based on the comprehensive analysis of grain-size, chemical composition, enrichment factor (EF), discriminant function (DF) and matter source index (PI), this paper points out that the grain-size distribution and element composition of the sand-dust deposits in Harbin are
evidently different from the loess and sand-dust in Lanzhou, and that matter source of the sand-dust in Harbin is different
from the loess in Northwest China and the sand-dust in Lanzhou. The sand-dust deposits in Harbin are an admixture of coarse
grains transmitted in short distance and fine grains transported in long distance. The plentiful coarse grains of the sand-dust
deposits in Harbin origin from sand of local spot, and are the near-source deposits transported by low altitude airflow.
Fundation item: Under the auspices of Natural Science Fund of Heilongjiang Province (No. G0213), Heilongjiang Province Education
Bureau (No. 11511132)
Biography: XIE Yuanyun (1971–), male, a native of Ruijin of Jiangxi Province, postdoctor, associate professor, specialized
in Quaternary geology. |
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| Keywords: | sand-dust storm grain-size composition chemical composition Harbin |
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