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Copyright of Yellow River is the property of Editorial Board of Yellow River and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Shenyang Agricultural University is the property of Journal of Shenyang Agricultural University Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Mastering the basic physical properties of the Yellow River ice is a necessary condition for the study of the ice disaster in the Yellow River. At the different positions in Bayannaoer section of the Yellow River from the upstream to the downstream, at the Dukou, Sike-helou, Aobao, Sanhuhekou and Wuliangsuhai, samples of ice were carried out to observe the ice crystal structure, test density and sediment content in ice. It observed the flow rate under the ice and analyzed the ice crystal structure, density and sediment content in ice at different position in Bayannaoer section of the Yellow River and Wuliangsuhai. It can conclude that the crystal structure of ice at different position in Bayannaoer section of the Yellow River is obviously different. There are only a few single granular ice and columnar ice. Most of the ice crystal structure alternates between granular ice and columnar ice, but the crystal structure at Wuliangsuhai is the single columnar ice. The flow rate can affect the crystal structure of ice in a certain extent. The density in the ice gradually increases with the increase of sediment content in the ice. And the different types of ice crystals have different sediment contents in the ice. The sediment content and density in the ice fluctuate greatly at different positions in Bayannaoer section of the Yellow River, which is prominent greater than that of Wuliangsuhai. [ABSTRACT FROM AUTHOR]