Research output: Contribution to journal › Conference article › peer-review
Evolution of a paleolake on Russian Island (Sea of Japan) in middle-late Holocene : Record of sea-level oscillations, extreme storms and tsunami. / Grebennikova, T.; Razjigaeva, N.; Ganzey, L.; Ganzei, K.; Arslanov, Kh; Maksimov, F.; Petrov, A.; Kharlamov, A.
In: IOP Conference Series: Earth and Environmental Science , Vol. 438, No. 1, 012009, 05.02.2020.Research output: Contribution to journal › Conference article › peer-review
}
TY - JOUR
T1 - Evolution of a paleolake on Russian Island (Sea of Japan) in middle-late Holocene
T2 - 5th International Conference on Ecosystem dynamics in the Holocene
AU - Grebennikova, T.
AU - Razjigaeva, N.
AU - Ganzey, L.
AU - Ganzei, K.
AU - Arslanov, Kh
AU - Maksimov, F.
AU - Petrov, A.
AU - Kharlamov, A.
N1 - Publisher Copyright: © Published under licence by IOP Publishing Ltd.
PY - 2020/2/5
Y1 - 2020/2/5
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 diatoms typical in bay and deep-water forms are evidence of influence of extreme storms and tsunami. The age of the paleotsunami coincides well with the regional data.
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 diatoms typical in bay and deep-water forms are evidence of influence of extreme storms and tsunami. The age of the paleotsunami coincides well with the regional data.
UR - http://www.scopus.com/inward/record.url?scp=85079667767&partnerID=8YFLogxK
U2 - 10.1088/1755-1315/438/1/012009
DO - 10.1088/1755-1315/438/1/012009
M3 - Conference article
AN - SCOPUS:85079667767
VL - 438
JO - IOP Conference Series: Earth and Environmental Science
JF - IOP Conference Series: Earth and Environmental Science
SN - 1755-1307
IS - 1
M1 - 012009
Y2 - 11 November 2019 through 15 November 2019
ER -
ID: 89240265