Shivera (plural Shiver ) [comm. 1] - relatively shallow (depth up to 1.5 - 2 m) section of the river with underwater randomly located in the channel underwater stones and protruding from the water and fast flow.
Content
Description
The length of the shiver ranges from several tens of meters to several kilometers. Due to the high flow velocity, oblique and direct standing waves , reverse flows, water pits ( barrels ) behind the stones appear in the shivers. Unlike thresholds, shivers do not have powerful sinks . Plums are local, their sequence is poorly traced, so it is difficult to distinguish the line of preferential water flow (stream). The main difficulty in passing a shiver, like any obstacle on the river, is to determine the line of motion of the vessel. Security measures - reconnaissance, choice of berths, water and shore insurance. Often a shiver is called some part of a large threshold. For example, like this: "The threshold begins with a long uncomplicated shiver ..."
It is generally believed that shivers are formed in rivers with a fast flow. So, on the Indigirka River in Yakutia, shivers, consisting mainly of boulders, sometimes stretch for hundreds of meters, which can be seen for many kilometers [1] .
Notes
- Comments
- ↑ Stress on the first syllable, see Ed. Lopatina, V.V. Russian Spelling Dictionary. - M .: Azbukovnik, 1999.
- Sources
- ↑ Rudich, K.N. River that woke the mountains. - Novosibirsk: Nauka, 1977 .-- S. 43, 44.
Literature
- Encyclopedia of tourists / chapters. ed. E.I. Tamm .. - M .: BDT, 1993. - S. 138 .. - ISBN 5-85270-083-5 .
- V.N. Grigoryev, A.V. Serebrennikov, V.A. Polovitsky, A.I. Korobkov, N.G. Fedotov S.A. Goals. Traveling on rowing ships. - M .: Physical education and sport, 1979.
See also
- Threshold
- Roll