DOI: 10.1016/j.quascirev.2013.01.018
Scopus记录号: 2-s2.0-84874704571
论文题名: Late Holocene climate and environmental changes in Kamchatka inferred from the subfossil chironomid record
作者: Nazarova L. ; de Hoog V. ; Hoff U. ; Dirksen O. ; Diekmann B.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2013
卷: 67 起始页码: 81
结束页码: 92
语种: 英语
英文关键词: Chironomids
; Holocene
; Kamchatka
; Palaeoclimate
; Temperature
Scopus关键词: Chironomids
; Climate proxies
; Climate variation
; Climatic changes
; Climatic periods
; Complex pattern
; Cooling trends
; Environmental change
; Head capsule
; High resolution
; Holocenes
; Japanese islands
; Kamchatka
; Lake levels
; Lake sediments
; Lake waters
; Last millenniums
; Last stage
; Late Holocene
; Local forcing
; Low temperatures
; Palaeoclimate
; Sediment core
; Spatial heterogeneity
; Surrounding regions
; Temporal resolution
; Climate change
; Lakes
; Sedimentology
; Stratigraphy
; Temperature
; Sediments
; climate variation
; fossil assemblage
; fossil record
; Holocene
; insect
; lacustrine deposit
; paleoclimate
; paleoenvironment
; paleotemperature
; proxy climate record
; sediment core
; subfossil
; Bering Island
; Japan
; Kamchatka
; Komandorski Islands
; Kuril Islands
; Russian Federation
; Sakhalin
英文摘要: This study presents a reconstruction of the Late Holocene climate in Kamchatka based on chironomid remains from a 332 cm long composite sediment core recovered from Dvuyurtochnoe Lake (Two-Yurts Lake, TYL) in central Kamchatka. The oldest recovered sediments date to about 4500 cal years BP. Chironomid head capsules from TYL reflect a rich and diverse fauna. An unknown morphotype of Tanytarsini, Tanytarsus type klein, was found in the lake sediments. Our analysis reveals four chironomid assemblage zones reflecting four different climatic periods in the Late Holocene. Between 4500 and 4000 cal years BP, the chironomid composition indicates a high lake level, well-oxygenated lake water conditions and close to modern temperatures (∼13 °C). From 4000 to 1000 cal years BP, two consecutive warm intervals were recorded, with the highest reconstructed temperature reaching 16.8 °C between 3700 and 2800 cal years BP. Cooling trend, started around 1100 cal years BP led to low temperatures during the last stage of the Holocene. Comparison with other regional studies has shown that termination of cooling at the beginning of late Holocene is relatively synchronous in central Kamchatka, South Kurile, Bering and Japanese Islands and take place around 3700 cal years BP. From ca 3700 cal years BP to the last millennium, a newly strengthened climate continentality accompanied by general warming trend with minor cool excursions led to apparent spatial heterogeneity of climatic patterns in the region. Some timing differences in climatic changes reconstructed from chironomid record of TYL sediments and late Holocene events reconstructed from other sites and other proxies might be linked to differences in local forcing mechanisms or caused by the different degree of dating precision, the different temporal resolution, and the different sensitive responses of climate proxies to the climate variations. Further high-resolution stratigraphic studies in this region are needed to understand the spatially complex pattern of climate change in Holocene in Kamchatka and the surrounding region. © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60679
Appears in Collections: 过去全球变化的重建
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作者单位: Alfred Wegener Institute for Polar and Marine Research, Research Unit Potsdam, Telegrafenberg A43, 14473 Potsdam, Germany; Kazan Federal University, Kremlyovskaya Str, 18, 420018 Kazan, Russian Federation; Potsdam University, Am Neuen Palais 10, 14469 Potsdam, Germany; University of Tromsø, Department of Geology, Dramsveien 201, 9037 Tromsø, Norway; Institute of Volcanology and Seismology FED RAS, Piipa blvd., 9, 683006 Petropavlovsk-Kamchatsky, Russian Federation
Recommended Citation:
Nazarova L.,de Hoog V.,Hoff U.,et al. Late Holocene climate and environmental changes in Kamchatka inferred from the subfossil chironomid record[J]. Quaternary Science Reviews,2013-01-01,67