Popigay River

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Satellite image of the crater and the Popigai him from southeast to northwest flowing through Popigai River

Popigai ( Попигай ) in the catchment area of the Chatanga (top right)

Template: Infobox River / Obsolete

The Popigai (Russian Попигай ) is about 532 km long, right or eastern tributary of the Laptev Sea ( Arctic Ocean ) flowing Chatanga in the northeast of the Krasnoyarsk region and the northern part of Siberia, Russia ( Asia).

Course

The Popigai created about 480 km north of the Arctic Circle in the north- east of the Anabarplateaus, the northern part of the Central Siberian Uplands. In the northeast of Krasnoyarsk region he entfließt which is situated at about 485 m height Tschonno - Kjujole Lake. The border with the neighboring Republic of Sakha ( Yakutia) is minimal approximately 3 km south-southeast of the lake.

The Popigai runs exclusively in the Krasnoyarsk region. In his first narrow valley with many rapids flowing near the eastern border with Sacha located in a northeasterly direction. Later he runs predominantly north-west. In this direction, it flows through the Popigaikrater, an impact crater about 100 km in diameter, of the approximately 35 million years ( Eocene ) is old and has its name from the Popigai. In this section of the river meanders strong and soon reaches the North Siberian Lowland, which it flows in his now wide, flat and marshy valley.

In the estuary near the lower reaches of Popigai forms two to three island-studded river arms several times reunite and close to the 0.1 -m height mark ( ⊙ 72.998694444444106.23736111111 ) open in the coming from the south Chatanga, the latter being approximately directly below the Popigai estuary 10 km wide and 28 km further north in the belonging to the Laptev Sea Chatangagolf goes on.

Inflows and towns

Among the tributaries of the Popigai include ( downriver considered ): Tschordy - Daldyn, Dogoi, Fyodor, Ese - Jurjage, Daldyn, Rassocha, Upper Fomich, Anabarka, food Ramin, Sopotschnaja, Polovinnaiya and Lower Fomich. On Popigai are no towns, but around 18 km south-southwest or above its mouth is located on the eastern shore Chatanga Noworybnaja.

Catchment, Hydrology and Hydrography

The catchment area of ​​50,300 km ² Popigai comprises around. Above its estuary the river is about 500 m wide and 5 m deep. The mean annual runoff ( MQ ) is located in nearby estuary at 400 m³ / s The flow rate is on average 0.2 m / s At the mouth of the river Chatangadolf the arms are together about 5.5 km wide. At a length of over 50 kilometers of river, the river underflow is under tidal influence.

Climate, fauna and ice

The Popigai flows through landscapes from frost rubble deserts and tundra with mosses and lichens. The winters are long and extremely cold, the summers are short and cold. The river is covered as of the end of October to June from ice. When thaw in the summer of permafrost and melting ice and snow, often creates strong flood that drives the flow in the Chatangagolf.

Infrastructure

The Popigai is navigable in the lower reaches to over 100 km in length. But as it flows through almost completely uninhabited area, it is not used for navigation. Also, any other infrastructure is lacking.