干旱区生态环境知识资源中心(Arid): 再论巴丹吉林沙漠湖泊水的补给来源、补给模式与高大沙山的形成机理

Arid

	再论巴丹吉林沙漠湖泊水的补给来源、补给模式与高大沙山的形成机理
其他题名	Study on the supplying resource and mode of lakes in the Badain Jaran Desert and the formation mechanism of megadunes
	丁宏伟 1; 郭瑞 2; 蓝永超 3; 田刚 4; 康亮 1; 冯建宏 2
来源期刊	冰川冻土
ISSN	1000-0240
出版年	2015
卷号	37 期号:3 页码:783-792
中文摘要	依据已有研究成果和最新调查资料, 在综述沙漠湖泊与高大沙山研究进展及存在问题的基础上, 深入探讨了巴丹吉林沙漠湖泊水的补给来源、补给模式及高大沙山的形成机理. 结果认为, 沙漠湖泊水和地下水的补给来源不是当地降水和周边雅布赖山北大山的降水形成的地表洪水, 而是南部青藏高原(包括祁连山)现代大气降水、冰雪融水、高原湖水的远源补给. 补给模式为高原富含CO_2气体和CaCO_3的入渗水, 通过深大导水断裂通道形成的区域地下水流循环系统, 源源不断地自南向北运移到沙漠地带, 地下水在通过沙漠湖泊区弧形"叠瓦状"垂向导水构造断裂向上越流过程中被广泛分布的岩浆岩加热, 沿断层溢出地表形成湖泊群, 同时导致水中CO_2的释放和CaCO_3的沉积, 形成钙华体. 高大沙山的形成机理是深层地下热水向上越流补给了沙漠覆盖区, 在承压水头以下形成鼓丘状的沙漠地下水, 承压水头以上, 水蒸汽继续向上运移并被凝结在沙粒表面, 未被吸附凝结的热水蒸汽继续向上运移并被吸附在新沉积的沙粒表面, 形成湿砂层并接受更新的沙粒沉积, 如此反复循环, 则沙丘高度不断增加, 逐步形成高大的固定沙山.
英文摘要	Based on the former research results and latest investigation materials, this paper summarizes the research process and existing problems about desert lakes and megadunes and further exploring the supplying resource and mode of the lakes in the Badain Jaran Desert. It comes to a conclusion that the supplying source of both desert lakes and underground water is neither by local precipitation or flood resulting from precipitation on the peripheral Jacob Lai mountains-North mountains, but rather feed by southern Tibet Plateau including Qilian Mountain through atmospheric precipitation, ice thawing and far-source plateau lakes feeding. The supplying mode is the infiltration water rich in CO_2 and CaCO_3 goes through the raptured pipe which forms underground circulation system. It delivers the water continuously from south to the north, desert zone. When the groundwater arriving at the desert lake zone, it will be heated up by the vertical conductive structure shaped like "laid tile" arc which is made from magmatic rock. Then the water overflows from the faults to form lake group, meanwhile it leads to the release of CO_2 and CaCO_3 deposition forming calcium cementation layer. The mechanism of formation of megadunes is that when underground water in deep depth goes upwards to feed the desert covered zone the drum shaped desert underground water is formed beneath artesian head and above the artesian head, water vapor keeps going upwards and stays at the surface of sand particles and the uncoagulated hot vapor continues going upwards and is absorbed by sand particles of new deposited sand to form wet sand receiving renewed sand particles deposition. Thus the circulation repeating leads to the growth of sand dune and finally the megadunes are formed.
中文关键词	沙漠湖泊 ; 高大沙山 ; 地热 ; 地质构造 ; 巴丹吉林沙漠 ; 青藏高原
英文关键词	desert lakes megadunes geothermy geological structure Badain Jaran Desert Qinghai-Tibet Plateau
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Geology
CSCD记录号	CSCD:5540350
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/232365
作者单位	1.甘肃省地质矿产勘查开发局, 兰州, 甘肃 730000, 中国; 2.甘肃省地矿局水文地质工程地质勘察院, 张掖, 甘肃 734000, 中国; 3.中国科学院寒区旱区环境与工程研究所, 兰州, 甘肃 730000, 中国; 4.甘肃地质工程勘察院重庆分院, 重庆 401120, 中国
推荐引用方式 GB/T 7714	丁宏伟,郭瑞,蓝永超,等. 再论巴丹吉林沙漠湖泊水的补给来源、补给模式与高大沙山的形成机理[J]. 中国科学院西北生态环境资源研究院,2015,37(3):783-792.
APA	丁宏伟,郭瑞,蓝永超,田刚,康亮,&冯建宏.(2015).再论巴丹吉林沙漠湖泊水的补给来源、补给模式与高大沙山的形成机理.冰川冻土,37(3),783-792.
MLA	丁宏伟,et al."再论巴丹吉林沙漠湖泊水的补给来源、补给模式与高大沙山的形成机理".冰川冻土 37.3(2015):783-792.