DOI: 10.1016/j.gloplacha.2013.02.011
论文题名: Discovery of Holocene millennial climate cycles in the Asian continental interior: Has the sun been governing the continental climate?
作者: Kravchinsky V.A. ; Langereis C.G. ; Walker S.D. ; Dlusskiy K.G. ; White D.
刊名: Global and Planetary Change
ISSN: 0921-8337
出版年: 2013
卷: 110 起始页码: 386
结束页码: 396
语种: 英语
英文关键词: Bond cycles
; Climate
; Environmental changes
; Holocene
; Loess
; Magnetic susceptibility
; Petromagnetism
; Siberia
; Soil
; Solar insolation
Scopus关键词: Finite difference method
; Incident solar radiation
; Sediments
; Soils
; Spectrum analysis
; Stratigraphy
; Weathering
; Climate
; Environmental change
; Holocenes
; Loess
; Petromagnetism
; SIBERIA
; Solar insolation
; Magnetic susceptibility
; climate cycle
; climate variation
; grain size
; Holocene
; insolation
; magnetic susceptibility
; paleoclimate
; pedogenesis
; soil horizon
; sunspot
; Siberia
英文摘要: We conducted a high-resolution study of a unique Holocene sequence of wind-blown sediments and buried soils in Southern Siberia, far from marine environment influences. This was accomplished in order to assess the difference between North Atlantic marine and in-land climate variations. Relative wind strength was determined by grain size analyses of different stratigraphic units. Petromagnetic measurements were performed to provide a proxy for the relative extent of pedogenesis. An age model for the sections was built using the radiocarbon dating method. The windy periods are associated with the absence of soil formation and relatively low values of frequency dependence of magnetic susceptibility (FD), which appeared to be a valuable quantitative marker of pedogenic activity. These events correspond to colder intervals which registered reduced solar modulation and sun spot number. Events, where wind strength was lower, are characterized by soil formation with high FD values. Spectral analysis of our results demonstrates periodic changes of 1500, 1000 and 500. years of relatively warm and cold intervals during the Holocene of Siberia. We presume that the 1000 and 500. year climatic cycles are driven by increased solar insolation reaching the Earth surface and amplified by other still controversial mechanisms. The 1500. year cycle associated with the North Atlantic circulation appears only in the Late Holocene. Three time periods - 8400-9300. years BP, 3600-5100. years BP, and the last ~. 250. years BP - correspond to both the highest sun spot number and the most developed soil horizons in the studied sections. © 2013 Elsevier B.V. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84897108052&doi=10.1016%2fj.gloplacha.2013.02.011&partnerID=40&md5=7804147e7042e52dd7c1aa1a05517c75
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/11243
Appears in Collections: 全球变化的国际研究计划
There are no files associated with this item.
作者单位: Department of Physics, University of Alberta, Edmonton, Alberta T6G 2G7, Canada
Recommended Citation:
Kravchinsky V.A.,Langereis C.G.,Walker S.D.,et al. Discovery of Holocene millennial climate cycles in the Asian continental interior: Has the sun been governing the continental climate?[J]. Global and Planetary Change,2013-01-01,110.