| Karakul | |
|---|---|
 | |
  Karakul Location in Tajikistan Show map of Tajikistan Karakul Karakul (Pamir) Show map of Pamir | |
| Location | Pamir Mountains |
| Coordinates | 39°02′24″N73°25′12″E / 39.04000°N 73.42000°E /39.04000; 73.42000 |
| Type | Impact crater lake,endorheic |
| Primary outflows | None |
| Basin countries | Tajikistan |
| Max. width | 52 km (32 mi) |
| Surface area | 380 km2 (150 sq mi) |
| Average depth | 210 m (690 ft)[citation needed] |
| Max. depth | 230 m (750 ft) |
| Water volume | 79.8 km3 (19.1 cu mi) |
| Surface elevation | 3,960 m (12,990 ft) |
 | |
| Designations | |
|---|---|
| Official name | Karakul Lake |
| Designated | 18 July 2001 |
| Reference no. | 1082[1] |
Karakul orQarokul (Kyrgyz for "black lake", replacing the olderTajik name Siob;Russian:Каракуль;Tajik:Қарокӯл;Uyghur:قاراكۆل,romanized: Qaraköl,Қаракөл;Kyrgyz:Каракөл) is anendorheic lake, 25 km (16 mi) in diameter, located within a 52 km (32 mi)impact crater.[2][3] It is located in theTajik National Park in thePamir Mountains inTajikistan.
Karakul lies within a circular depression, which has been interpreted as an impact crater with a rim diameter of 52 km (32 mi).[3] Some estimates say the impact is relatively recent. A preliminary estimate dated it to between 25 Ma[2] and 23 Ma.[4] However, it may be from the recentPliocene epoch (5.3 to 2.6 Ma).[5] TheEarth Impact Database (EID) also lists it as younger than 5 Ma.[3] It is larger than theEltanin impact (2.5 Ma), which has already been suggested as a contributor to the cooling andice cap formation in the Northern Hemisphere during the late Pliocene.[6]
The Karakul impact structure was first identified around 1987 through studies of imagery taken from space.[5][7]
The lake/crater lies at an elevation of 3,960 m (12,990 ft)above mean sea level. A peninsula projecting from the south shore and anisland off the north shore divide the lake into two basins: a smaller, relatively shallow eastern one, between 13 and 19 m (43 and 62 ft) deep, and a larger western one, 221 to 230 m (725 to 755 ft) deep.[8] It isendorheic (lacking a drainage outlet) and the water isbrackish. There is a small village with the same name on the eastern shore of the lake.[9]
The lake level was 35 m higher after the last ice age.[10][11]
Although the lake lies within a national park, much of the surroundings are used aspasture. The lake, with its islands,marshes,wet meadows,peatbogs, andpebbly andsandyplains, has been identified byBirdLife International as anImportant Bird Area (IBA) because it supports significant numbers of the populations of various bird species, either as residents, or as breeding orpassage migrants.
These species includebar-headed geese,ruddy shelducks,common mergansers,saker falcons,Himalayan vultures,lesser sand plovers,brown-headed gulls,Tibetan sandgrouse,yellow-billed choughs,Himalayan rubythroats,white-winged redstarts,white-winged snowfinches,rufous-streaked accentors,brown accentors,black-headed mountain finches andCaucasian great rosefinches. The lake's islands are the main places where waterbirds rest and nest.
The only fish in the lake areTriplophysa lacusnigri.[12]
Higher thanLake Titicaca, Karakul hosted the Roof of the WorldRegatta from 2014 to 2017.[13] This replaced the Alpine Bank Dillon Open, held on theDillon Reservoir in Colorado,United States as the highest sailing regatta in the world.[14]
{{cite journal}}: CS1 maint: numeric names: authors list (link)
One or more of the preceding sentences incorporates text from a publication now in thepublic domain: Chisholm, Hugh, ed. (1911). "Kara-Kul".Encyclopædia Britannica. Vol. 15 (11th ed.). Cambridge University Press. p. 675.{{citation}}: CS1 maint: multiple names: authors list (link)
