- Elgygytgyn Lake
Infobox_lake
lake_name = Elgygytgyn Lake
image_lake = Elgygytgyn.jpg
caption_lake =
image_bathymetry =
caption_bathymetry =
location =Chukchi Peninsula , north-eastSiberia
coords = coord|67|30|N|172|00|E|type:waterbody_region:RU|display=inline,title
type = impactcrater lake ,oligotrophic
inflow =
outflow =Enmyvaam
catchment = 293 km²
basin_countries = Russia
length = 12 km
width = 12 km
area = 110 km²
depth =
max-depth =
volume =
residence_time =
shore =
elevation =
islands =
cities =Lake El'gygytgyn (Russian Эльгыгытгын) is located on the
Chukchi Peninsula in north-eastSiberia . It is approximately 15 km in diameter and has a maximum depth of 175 m. The lake is centered within ameteorite impact crater with a rim diameter of 18 km that formed 3.6 million years ago (Pliocene ).The lake is of particular interest to scientists because it has never been covered by
glacier s. This has allowed the uninterrupted build-up of 400 m ofsediment at the bottom of the lake, recording information on prehistoricclimate change .Fauna
The conditions in the El'gygytgyn lake are extremely severe for fish life. Therefore there are only three species permanently inhabiting the lake's harsh aquatic environment. These are three types of char: Salvelinus boganidae, S. elgyticus (Small-mouth char) and
Salvethymus svetovidovi (long-finned char). The two latter species are endemic to the El'gygytgyn lake. The golets (голец) has been introduced recently.External links
* [http://www.uaf.edu/water/faculty/nolan/lakee/ Dr. Matt Nolan at the University of Alaska Fairbanks]
* [http://www.physorg.com/news82898319.html Polar Expedition to Siberian Lake will Yield Details of Past Climate]PhysOrg.com .
* [http://links.jstor.org/sici?sici=0014-3820(200103)55%3A3%3C573%3AHPOAC(%3E2.0.CO%3B2-V Fisheries; char species in the lake]
* [http://www.iucnredlist.org/search/details.php/19878/all Species survival]
* [http://home.zf.jcu.cz/~kuchtr00/reserse.htm Arctic char introduction]
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