COASTAL DYNAMICS OF THE BERING SEA (LORINO SITE, CHUKCHI PENINSULA, RUSSIA)
A.A. Maslakov
Lomonosov Moscow State University, Faculty of Geography, Laboratory of Geoecology of the North, 1, Leninskie Gory, Moscow, 119991, Russia; alexey.maslakov@geogr.msu.ru
The study presents results of coastal retreat monitoring within a 750 m long remnant of a marine terrace near Lorino community, on the Bering Sea shore. The monitoring data are used to estimate the rate of coastal retreat (landward movement of bluff foot) as a function of coast parameters, and relative contributions of thermal abrasion and thermal denudation to coastal erosion and material loss. The retreat rates at the Lorino site vary both in time and in space: they were about nine times faster in 2014–2017 than in 1967–2014 (4.2 m/yr against 0.4 m/yr), while lateral variations have been controlled by coast parameters and mechanic strength of rocks exposed to wave action.
Thermal abrasion, thermal denudation, coastal dynamics, Lorino, Chukchi Peninsula, Bering Sea