TY - CONF

T1 - Evolution of a paleolake on Russian Island (Sea of Japan) in middle-late Holocene: Record of sea-level oscillations, extreme storms and tsunami.

AU - Grebennikova, T.

AU - Razjigaeva, N.

AU - Ganzey, L.

AU - Ganzei, K.

AU - Arslanov, K.

AU - MAKSIMOV , F.

AU - Petrov, A

AU - Kharlamov, A

PY - 2020

Y1 - 2020

N2 - The diatom algae from sediments of a paleolake serve as records of changes to environments over the last 7500 cal yr. The lagoon lake formed when the sea level approximately corresponded to the present-day position. Evolution of the paleolake was controlled by sea-level oscillations and humidity changes. Eight stages have been distinguished. During a dry episode in 7330-7090 cal yr BP the lake size decreased. The salinity reached maximal values at the Holocene transgression peak. Three stages of a higher salinity are recognized (6750-6500, 6080-5830, 5420-5090 cal yr BP). A severe flood occurred in 6080-6000 cal yr BP. The brackish-water lake existed in ~5090 cal yr BP and the freshwater lake in ~4090 cal yr BP. A prolonged phase of decreasing humidity, associated with a weakening of summer monsoons, led to a drop in sedimentation rates in ~3510 cal yr BP. Peat accumulation started at the Little Ice Age. The lake was transformed into a swamp during drop in precipitations in ~270 cal yr BP. Presence of marine

AB - The diatom algae from sediments of a paleolake serve as records of changes to environments over the last 7500 cal yr. The lagoon lake formed when the sea level approximately corresponded to the present-day position. Evolution of the paleolake was controlled by sea-level oscillations and humidity changes. Eight stages have been distinguished. During a dry episode in 7330-7090 cal yr BP the lake size decreased. The salinity reached maximal values at the Holocene transgression peak. Three stages of a higher salinity are recognized (6750-6500, 6080-5830, 5420-5090 cal yr BP). A severe flood occurred in 6080-6000 cal yr BP. The brackish-water lake existed in ~5090 cal yr BP and the freshwater lake in ~4090 cal yr BP. A prolonged phase of decreasing humidity, associated with a weakening of summer monsoons, led to a drop in sedimentation rates in ~3510 cal yr BP. Peat accumulation started at the Little Ice Age. The lake was transformed into a swamp during drop in precipitations in ~270 cal yr BP. Presence of marine

U2 - 10.1088/1755-1315/438/1/012009

DO - 10.1088/1755-1315/438/1/012009

M3 - Abstract

SP - 012009

T2 - 5th International Conference "Ecosystem dynamics in the Holocene". 2020

Y2 - 11 December 2019 through 15 December 2019

ER -