globalchange  > 过去全球变化的重建
DOI: 10.1016/j.quascirev.2015.01.007
Scopus记录号: 2-s2.0-84921966888
论文题名:
Hydroclimatic shifts in northeast Thailand during the last two millennia - the record of Lake Pa Kho
作者: Chawchai S.; Chabangborn A.; Fritz S.; Väliranta M.; Mörth C.-M.; Blaauw M.; Reimer P.J.; Krusic P.J.; Löwemark L.; Wohlfarth B.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2015
卷: 111
起始页码: 62
结束页码: 71
语种: 英语
英文关键词: Asian monsoon ; Geochemistry ; Last two millennia ; Paleoclimate ; Wetland/peatland
Scopus关键词: Agriculture ; Geochemistry ; Lakes ; Land use ; Rain ; Agricultural intensification ; Asian monsoon ; Asian summer monsoons ; Intertropical convergence zone ; Last two millennia ; Paleoclimates ; Paleoclimatic data ; Summer monsoon rainfall ; Atmospheric thermodynamics ; Holocene ; hydrometeorology ; intertropical convergence zone ; monsoon ; paleoclimate ; paleolimnology ; peatland ; proxy climate record ; rainfall ; spatial analysis ; Thailand
英文摘要: The Southeast Asian mainland is located in the central path of the Asian summer monsoon, a region where paleoclimatic data are still sparse. Here we present a multi-proxy (TOC, C/N, δ13C, biogenic silica, and XRF elemental data) study of a 1.5m sediment/peat sequence from Lake Pa Kho, northeast Thailand, which is supported by 20 AMS 14C ages. Hydroclimatic reconstructions for Pa Kho suggest a strengthened summer monsoon between BC 170-AD 370, AD 800-960, and after AD 1450; and a weakening of the summer monsoon between AD 370-800, and AD 1300-1450. Increased run-off and a higher nutrient supply after AD 1700 can be linked to agricultural intensification and land-use changes in the region. This study fills an important gap in data coverage with respect to summer monsoon variability over Southeast Asia during the past 2000 years and enables the mean position of the Intertropical Convergence Zone (ITCZ) to be inferred based on comparisons with other regional studies. Intervals of strengthened/weaker summer monsoon rainfall suggest that the mean position of the ITCZ was located as far north as 35°N between BC 170-AD 370 and AD 800-960, whereas it likely did not reach above 17°N during the drought intervals of AD 370-800 and AD 1300-1450. The spatial pattern of rainfall variation seems to have changed after AD 1450, when the inferred moisture history for Pa Kho indicates a more southerly location of the mean position of the summer ITCZ. © 2015 Elsevier Ltd.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60012
Appears in Collections:过去全球变化的重建

Files in This Item:

There are no files associated with this item.


作者单位: Department of Geological Sciences, Stockholm University, Stockholm 10691, Sweden; Department of Geology, Faculty of Science, Chulalongkorn University, Bangkok, Thailand; Department of Earth and Atmospheric Sciences and School of Biological Sciences, University of Nebraska-LincolnNE, United States; Department of Environmental Sciences, University of Helsinki, Helsinki, Finland; Centre for Climate, The Environment and Chronology (14CHRONO), School of Geography, Archaeology and Palaeoecology, Queen's University of Belfast, Belfast, United Kingdom; Department of Physical Geography and Quaternary Geology, Stockholm University, Stockholm, Sweden; Department of Geosciences, National Taiwan University, Taipei, Taiwan

Recommended Citation:
Chawchai S.,Chabangborn A.,Fritz S.,et al. Hydroclimatic shifts in northeast Thailand during the last two millennia - the record of Lake Pa Kho[J]. Quaternary Science Reviews,2015-01-01,111
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Chawchai S.]'s Articles
[Chabangborn A.]'s Articles
[Fritz S.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Chawchai S.]'s Articles
[Chabangborn A.]'s Articles
[Fritz S.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Chawchai S.]‘s Articles
[Chabangborn A.]‘s Articles
[Fritz S.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.