Development of coastal processes with the increase of water level: a case study for Lake Baikal

Abstract

The article provides estimations of the impact from abrupt increase in water level in Lake Baikal on coastal processes of bar Yarki (north part of Lake Baikal). The author has made a forecast of coastal processes of island bar under the current conditions and created a digital elevation model and profiles of the nearshore. Relationship between sea level rise and shoreline retreat are considered. Numerical simulation of evolution the beach profile under different conditions was carried out. The construction of hydroelectric power station in Irkutsk is the main reason that caused the change in morphological parameters of the bar. At the level of Lake Baikal at the time of expeditionary works in 2013, the shore profile showed relative stability even with maximum storms. When the lake level rose by 1 metre, the profile retreated “back and up” in compliance to the Dean-Maurmeier model (Dean, Maurmeyer, 1981) for coastal bars

Keywords

• increased level
• coastal erosion
• Lake Baikal
• numerical