Results 181 to 190 of about 4,519 (225)

Surface pollen in the east of Qaidam Basin

Journal of Geographical Sciences, 2006
Pollen analysis of 23 surface samples in the east of Qaidam Basin reveals the characteristics of pollen assemblages and their relationships with vegetation and climate. In pollen assemblages, Chenopodiaceae and Artemisia are preponderant types in all the samples, and Ephedra, Gramineae and Compositae are common types.
Hui Chen, Dongsheng Zhao, Xinmiao Lu, Yuecong Li, Qinghai Xu, Shuangcheng Li, Hua Ouyang   +6 more
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Lithology study using TFEM technique in western Qaidam Basin

SEG Technical Program Expanded Abstracts 2006, 2006
Figure 1: Configuration of TFEM data acquisition system. Time-Frequency Electromagnetics (TFEM) is a technique that can directly detect hydrocarbon. It is based on the electromagnetic and induced polarization (IP) properties of underground medium. It can detect a hydrocarbon reservoir and delimit its depth.
Wang Chaifu, He Zhanxiang, Ge Yunhua
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Preliminary magnetostratigraphy of Dabusan Lake, Qaidam Basin, central Asia

Physics of the Earth and Planetary Interiors, 1986
Abstract Sediment samples from a 528 m deep borehole located about 60 km north of Golmud on the northern side of Dabusan Lake have been used to determine the change in magnetic inclination with depth. Normal polarity Brunhes inclination values are present throughout the section but there are six departures from this value, five with negative ...
Wang Jingtai, E. Derbyshire, J. Shaw
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Desertification dynamics and future projections in Qaidam Basin, China

Environmental Monitoring and Assessment
The desertification in the Qaidam Basin has significantly impacted the ecological environment and human livelihood. Amidst the backdrop of anomalous climate warming, predicting the dynamic changes and future trends of desertification within the basin is imperative.
Jinjun, Han, Jianping, Wang, Chuntao, Zhao, Chao, Yue, Zhaofeng, Liu   +4 more
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Cenozoic Qaidam basin, China: A stronger tectonic inversed, extensional rifted basin

AAPG Bulletin, 2001
Qaidam basin is a composite sedimentary basin developed on typical continental crust. It comprises a Jurassic foreland basin and a Cenozoic extensional basin. The geologic history of the Cenozoic Qaidam basin can be divided into two megastages on the basis of stratigraphy and structure.
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Hydrogeological prospecting in the Da Qaidam area of the Qaidam Basin using the audio-frequency magnetotelluric method

Journal of Applied Geophysics, 2020
Abstract The Qaidam Basin has very little precipitation but large surface evaporation. Besides, the groundwater resources are unevenly distributed, which gradually decrease from east to west. Therefore, reasonable exploration and management of the groundwater resources are very important in this area.
Zhimin Xu, Guang Li, Huicui Xin, Jingtian Tang, Fujun Lv   +4 more
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High Temperature Deep Wells Fracturing Technology in Qaidam Basin

2021
With the exploration and development of Qaidam Basin is gradually moving from “conventional” to “deep and unconventional”, The fracturing of high temperature deep Wells is facing more and more challenges. The exploration and development of Well Shi62 has raised the requirement of fracturing well depth over 5500 m and temperature over 180 °C.
Xin-yuan Feng, Chun-yu Li, Yong Liu, Cheng-juan Zhang, Gui-qi Xie, Li Zhang, En-dong Zhao, Ying Fu   +7 more
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Advanced application of remote sensing technology in Qaidam Basin

SPIE Proceedings, 1998
Qaidam basin is one of the major oil and gas-bearing basins in China, and is also the first basin of using remote sensing technology for geological exploration. Along with the fast development of petroleum industry into 1990s, remote sensing technology faced new challenges for the application in petroleum exploration field.
Xiaoge Zhu, Youyan Zhang, Shihong Wang
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The hydrochemical features of salt lakes in Qaidam Basin

Chinese Journal of Oceanology and Limnology, 1986
There are 37 lakes in the Qaidam Basin: 1 freshwater lake, 6 brackish-water lakes, 2 saline-water lakes and 28 salt lakes.
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Yardang geometries in the Qaidam Basin and their controlling factors

Geomorphology, 2017
Abstract The hyperarid Qaidam Basin features extensive fields of yardangs (covering an area of ~ 40,000km2) sculpted in tectonically folded sedimentary rocks. We extracted the geometries of 16,749 yardangs, such as length-to-width ratio (L/W), spatial density, and spacing, from multi-source remote sensing data provided by Google Earth™. We classified
Chengqing Hu, Ninghua Chen, Paul Kapp, Jianyu Chen, Ancheng Xiao, Yanhui Zhao   +5 more
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