Sugan Lake
| Sugan Lake | ||
|---|---|---|
| Geographical location | Gansu , People's Republic of China | |
| Drain | (no) | |
| Data | ||
| Coordinates | 38 ° 51 ' N , 93 ° 54' E | |
|
||
| Altitude above sea level | 2793 m | |
| surface | 104.53 km² (2014) | |
| Maximum depth | 6 m | |
| Middle deep | 2.8 m | |
| PH value | 8.5 | |
|
particularities |
Salinity 32 g / l |
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The Sugan Lake is an inland lake in the Qaidam Basin , in the north of the Qinghai-Tibet Plateau , in China .
description
The Sugan Lake ( 苏 干 湖 , sū gàn hú ) is located in a depression on the northern edge of the Qaidam basin . It consists of two bodies of water, the Dasuganhu ( 大 苏 干 湖 , dà sū gàn hú - "Large Sugan Lake"), a salt lake with 105 km 2 and the Xiaosuganhu ( 小 苏 干 湖 , xiǎo sū gàn hú - "Small Sugan Lake "), A freshwater lake with 10 km 2 .
The Sugan Lake Depression is a 7000 km 2 desert region at around 2800 to 3200 m above sea level. It is bounded in the northwest by the Altun Shan , in the northeast by Danghe Nanshan and in the south by the Daseishiteng and Tuergendaban mountain ranges. The inland lake is a central confluence for surface water and groundwater. It feeds itself mainly from the groundwater that the two rivers Großer-Harteng-Fluss and Kleiner-Harteng-Fluss lead from the mountains in the east into the basin. The water of the two rivers seeps away completely as soon as it reaches the gobi zone at the foot of the mountains. The water comes back to the surface via springs on the east side of the lake and forms rivers that flow into the lake.
The region around Lake Sugan has a hyper arid climate . The annual mean precipitation amount is 15.8 mm (1957–2000), the potential evaporation reaches almost 3000 mm / a. The annual mean air temperature is 2.75 ° C. On average 55 days a year there are strong winds with more than 17 m / s.
In the Sugan Lake Depression there is only sparse vegetation and only on the east side of the lake, where the groundwater penetrates to the surface, there is grassland . Since 1982 there have been two bird sanctuaries with 3500 hectares on the Großer-Sugan-See and 850 hectares on the Kleiner-Sugan-See where black-necked cranes breed.
Individual evidence
- ↑ a b c d e Holmes, Jonathan A., et al. "Paleoclimatic implications of an 850-year oxygen-isotope record from the northern Tibetan Plateau." Geophysical Research Letters 34.23 (2007). ( HTML )
- ^ Zhou, SL, WC Zhang, and F. Wang. "Spatial-temporal variations and their dynamics of the saline lakes in the Qaidam Basin over the past 40 years." IOP Conference Series: Earth and Environmental Science. Vol. 46. No. 1. IOP Publishing, 2016. ( PDF )
- ↑ 郭 铌, 张杰, and 梁 芸. "西北 地区 近年来 内陆 湖泊 变化 反映 的 气候 问题." 冰川 冻土 25.2 (2003): 211-214. ( PDF )
- ↑ Zhang, Cheng, Guang Yang, and Yong Shu Zhang. "Geologic Characteristics of Reservoir Accumulation in Suganhu Depression in north margin of Qaidam basin." Advanced Materials Research. Vol. 616. Trans Tech Publications, 2013. ( PDF )
- ↑ Sun, Minzhuo, et al. "Biomarker characteristics and oil accumulation period of Well Sutan 1 in Qaidam Basin, China." Journal of Natural Gas Geoscience 1.1 (2016): 85-91. ( HTML )
- ↑ a b c QIANG Mingrui, CHEN Fahu, ZHANG Jiawu, GAO Shangyu and ZHOU Aifeng. "Climatic changes documented by stable isotopes of sedimentary carbonate in Lake Sugan, northeastern Tibetan Plateau of China, since 2 kaBP." Chinese Science Bulletin 50.17 (2005): 1930-1939. ( PDF )
- ↑ Qiang, Mingrui, et al. "Grain size in sediments from Lake Sugan: a possible linkage to dust storm events at the northern margin of the Qinghai – Tibetan Plateau." Environmental Geology 51.7 (2007): 1229-1238. ( HTML )
- ↑ Harris, James. "Managing nature reserves for cranes in China." (1992). Harris, James, "MANAGING NATURE RESERVES FOR CRANES IN CHINA" (1992). North American Crane Workshop Proceedings. 264. ( PDF )