The Eastern Arctic Seas Encyclopedia

2016 Edition
| Editors: Igor S. Zonn, Andrey G. Kostianoy, Aleksandr V. Semenov


Reference work entry

Indigirka – a river in Yakutia, which flows into the East Siberian Sea. It is 1,726 km long. The area of its basin is 360,000 km2. The area of its delta covers about 5,500 km2. It is formed by confluence of the Tuora-Yuryakh and the Taryn-Yuryakh rivers that flow down from the northern slopes of the Khalkan Range. Its basin lies in-between permafrost, northward of 70° N in tundra zone; hence, immense icing is characteristic for its rivers (in the basin of the Moma, a tributary of the Indigirka, Ulakhan-Taryn is placed – the largest icing in Russia with the area of 80–90 km2and maximum ice thickness of 5–6 m). In relation to the structure of the valley, bed, and flow rate, the Indigirka can be broken into two reaches: upper mountain (640 km) and lower plain (1,086 km). In its headwater the Indigirka flows along Yana-Oymyakon Highland and then in crevasse cuts a number of mountain ridges of the Chersky Range system leaving riffles behind, lower reach – at Yana-Indigirka Lowland. The...

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© Springer International Publishing Switzerland 2016