Maimetscha
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Maimecha Maimecha |
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 Location of the Maimetscha in the catchment area of the Khatanga |
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| Data | ||
| Water code | RU : 17040100112117600025559 | |
| location | Krasnoyarsk Region ( Russia ) | |
| River system | Chatanga | |
| Drain over | Cheta → Chatanga → Arctic Ocean | |
| origin |
Arylach Lake in the Putorana Mountains 68 ° 48 ′ 0 ″ N , 98 ° 33 ′ 59 ″ E |
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| Source height | approx. 643 m | |
| muzzle | at Katyryk in the Cheta coordinates: 71 ° 20 ′ 56 " N , 99 ° 30 ′ 6" E 71 ° 20 ′ 56 " N , 99 ° 30 ′ 6" E |
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| Mouth height | approx. 5 m | |
| Height difference | approx. 638 m | |
| Bottom slope | approx. 0.98 ‰ | |
| length | approx. 650 km | |
| Catchment area | approx. 26,500 km² | |
| Drain |
MQ |
285 m³ / s |
| Left tributaries | Jangissa, Mirjuka, Ileme, Kungtykachi, Ambardach, Kogotok, Delikan | |
| Right tributaries | Tschigidy, Tschonko | |
| Flowing lakes | Arylachsee , Suolasee , Chamyrsee , Turukesee | |
| Navigable | Lower course | |
The Maimetscha ( Russian Маймеча ; also Медве́жья , Medweschja , "Bear River") is an approximately 650 km long, right-hand or southern tributary of the Cheta in the Putorana Mountains and in the Taimyr Depression , in the north of the Krasnoyarsk region , from Siberia and Russia ( Asia ).
course
The Maimetscha arises in the east of the Putorana Mountains, the north-western part of the Central Siberian Mountains . It flows away from the small Arylachsee ( 643 m ), which lies in a narrow trough valley . The surrounding table mountains are in the north up to 1331 m and those in the south up to 1395 m high.
Initially, the Maimetscha flows in an easterly direction through the small Suolasee , which is fed by the Orto-Jurjach brook, among other things , and then north-eastwards through the small Chamyrsee ( 622 m ), into which the Chamyr-Jurjach brook flows, for example . These brooks tumble down the steep mountainsides over waterfalls .
From then on, the Maimetscha runs in the northeastern foothills of the Putorana Mountains, into which it flows around the small Turuke lake ( 593 m ), through tundra landscapes into a valley that soon widens, but mostly steep and deeply cut in a predominantly northern direction. It forms many meanders (river loops). In its lower reaches, the Taimyr Depression , which extends between the southern Putorana Mountains and the northern Byrranga Mountains , is the central part of the North Siberian lowlands .
Finally, the Maimetscha flows into the Cheta about 120 km southwest or above the village of Chatanga or about 6 km northeast or below the village of Katyryk on the Chatanga at a height of 5 m , which flows into the Chatanga about 143 km below .
The origin and the upper reaches of the river lie on the territory of the former Evenk Autonomous Okrug , the middle and lower reaches of the former Taimyr Autonomous Okrug .
geology
The Maimetscha flows through the central part of the distribution of the Siberian Trapps , an extensive flood basalt area that arose around the Permian-Triassic border 250 million years ago. The volcanic rocks in this area are up to 3000 meters thick. After the river which spread there was pikritische volcanic rock Meimechit named (English Meimechite even Meymechite , Maymechite ; Russian Маймечит , Maimetschit ).
Catchment area and tributaries
The catchment area of the Maimetscha is 26,500 km². Its tributaries include Jangissa, Mirjuka, Ileme, Kungtykachi, Ambardach, Kogotok and Delikan from the left and Tschigidy and Tschonko from the right.
Hydrography and hydrology
The mean annual flow rate of the Maimetscha is 285 m³ / s. The spring flood begins with the snowmelt at the end of May and lasts through June. In the summer months up to September there may be floods due to precipitation. From September to May, when it is covered by ice , the river has little water. Near the mouth it is more than 300 m wide and 5 m deep, and the flow velocity there is 0.3 m / s.
Use and infrastructure
The Maimetscha is navigable on the lower reaches, but not included in the list of inland waterways .
The area through which it flows is unpopulated; There are no towns directly on the river or in its entire catchment area. Accordingly, there is no transport infrastructure at all. A few kilometers above the mouth, on the right bank of the Cheta, lies the village of Katyryk, which belongs to the rural community of Chatanga in Taimyrski district. The source of Maimecha River is closest settlement 150 kilometers away in an east-southeasterly direction Jessei of Rajons Ilimpijski , part of the Evenki Nationalrajons.
Individual evidence
- ↑ a b Topographical map (1: 200.000, Bl. R-47-XXVII, XXVIII, Ed. 1986), Maimetscha-Ursprung ( Arylachsee ; about middle left below) u. a. with Putorana Mountains and northeast foothills and upper river (flowing diagonally to the top right) on mapr47.narod.ru (with heights above sea level )
- ↑ a b Topographic map (1: 200.000, Bl. R-47-IX, X, Ed. 1986), Maimetscha estuary (top right) and a. with the village Katyryk (left below) and Cheta (left and above) on mapr47.narod.ru (with heights above sea level )
- ↑ a b c d e Maimetscha in the State Water Register of the Russian Federation (Russian)
- ↑ a b c Article Maimetscha in the Great Soviet Encyclopedia (BSE) , 3rd edition 1969–1978 (Russian)
- ↑ Meimechite in the Mineralienatlas (Wiki)
- ^ S. Bernstein et al .: Tertiary alkaline volcanics in the Nunatak Region, Northeast Greenland: new observations and comparison with Siberian maymechites . In: Lithos . Volume 53, No. 1 , 2000, pp. 1-20 .
- ↑ List of inland waterways of the Russian Federation (according to Government Ordinance No. 1800 of December 19, 2002)