Geomorphic consequences of catastrophic flash flood in low mountains of the Western Caucasus (Gelenndzhik District of the Krasnodarskiy Region, European Russia)тезисы доклада

Дата последнего поиска статьи во внешних источниках: 9 марта 2017 г.

Работа с тезисами доклада


[1] Geomorphic consequences of catastrophic flash flood in low mountains of the western caucasus (gelenndzhik district of the krasnodarskiy region, european russia) / Е. В. Гаранкина, В. Р. Беляев, Е. Д. Шеремецкая et al. // I International Conference on Research for Sustainable Development in Mountain Regions: Book of Abstracts. — Instituto Politecnico de Bragana Braganca, Portugal, 2016. — P. 203–203. In July 2012 heavy flash flood hit the Kranodarsky Region. It was caused by extreme rainfall highest since 1971. Flash floods occurred on a number of rivers and caused severe damages to settlements and infrastructures as well more than 30 causalities in the town of Krymsk, which was hit by the 8 m high flood wave during the night time.In this study, we consider geomorphic consequences of this flash flood in the basin of small river Ashamba located at the southwestern outskirts of Gelendzhik City. The basin area is 42.6 km2, length of the river is about 12 km. Its headwaters are located on the Markothskiy Ridge up to 850 m a.s.l., while its most part are within the elevation of 200‐300 m a.s.l. Upland headwaters are mainly forested, while middle and lower reaches dominated by alternation of woodland and wineyards with countryside households in valley bottom. Some of these households were also damaged during the July 2012 flash floods, though there were no causalities in this area. In order to evaluate geomorphic consequences of the year 2012 event we combine results of field investigations and comparative interpretation of satellite images from the free access source GoogleEarth dated to 01.05.2012 and 27.04.2013. Main detected features that appeared during that time span include destabilized slopes (landslide scars), intensive channel deformations of main river and its tributaries, formation of debris fans, incision of small gully‐type erosion features and destruction of anthropogenic objects. Several of such features were surveyed in the field in order to evaluate their volumes. The most affected part of the Ashamba basin is its lower part beginning about 2 km from its mouth.

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