Journal - Mudflows under changing climate in Zailiysky Alatau, Northern Tien Shan

Mudflows under changing climate in Zailiysky Alatau, Northern Tien Shan

Roza Yafyazova

Republican state-owned enterprise “Kazhydromet”

32, Abay Ave., 050022 Almaty, Republic of Kazakhstan

Jour. Nepal Geol. Soc., Vol. 34, 2007, 95-98


Abstract

The influence of climate change on mudflows is evident on the northern slopes of the Zailiysky Alatau Mountain Range. In this area, most of the mudflows occurred during the Riss–Würm interglacial period whereas they nearly stopped during the Riss and Würm Ice Ages. The amount of sediment transported by mudflows to the debris cones located on the foothills increased significantly when the summer air temperature increased by 2– 3̊ C. Under such conditions, dams are ineffective to control mudflows. Hence, for an effective mudflow control strategy, it is necessary to estimate their frequency and magnitude.

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