Arid
DOI10.1016/j.gca.2012.04.035
Seasonal resolution of Eastern Mediterranean climate change since 34 ka from a Soreq Cave speleothem
Orland, Ian J.1; Bar-Matthews, Miryam2; Ayalon, Avner2; Matthews, Alan3; Kozdon, Reinhard1; Ushikubo, Takayuki1; Valley, John W.1
通讯作者Orland, Ian J.
来源期刊GEOCHIMICA ET COSMOCHIMICA ACTA
ISSN0016-7037
EISSN1872-9533
出版年2012
卷号89页码:240-255
英文摘要

The combination of ion microprobe analysis of delta O-18 and confocal laser fluorescent microscope imaging of annual growth bands in a Soreq Cave speleothem provides sub-annual-scale climate information between 34 and 4 ka. This high-resolution methodology is ideal both for comparing seasonal climate patterns across broad windows of time and examining rapid climate events, such as the Younger Dryas termination, in detail. The sub-annual delta O-18 gradients we report represent a combination of seasonal variability in rainfall amount and air temperature. A distinct change in both the pattern of fluorescent banding and the gradient of delta O-18 measured in situ across single, annual growth bands indicates a change in seasonal climate patterns of the Eastern Mediterranean region following Heinrich event 1 and again after the Younger Dryas. Throughout the Holocene, wet winters and dry summers characterized regional climate. During the Younger Dryas, we find that regional climate may have been more arid than in the Holocene, but the fluorescent banding pattern indicates that the supply of dripwater to the cave was more consistent year-round. We suggest that a reduced gradient of seasonal precipitation, occasional snowfall, and vegetation differences may have all contributed to the isotope and fluorescent banding patterns observed during Heinrich event 1 and the last glacial stadial. Detailed investigation of the Younger Dryas termination reveals a rapid onset of regional environmental change. Fluorescent band counting indicates that the Younger Dryas termination, as recorded by rainfall in the Eastern Mediterranean, spanned a minimum of 12 years. (C) 2012 Elsevier Ltd. All rights reserved.


类型Article
语种英语
国家USA ; Israel
收录类别SCI-E
WOS记录号WOS:000305334100015
WOS关键词OXYGEN-ISOTOPE ; YOUNGER DRYAS ; LATE PLEISTOCENE ; HULU CAVE ; PALEOCLIMATE ; REGION ; HOLOCENE ; RECORD ; ISRAEL ; STALAGMITE
WOS类目Geochemistry & Geophysics
WOS研究方向Geochemistry & Geophysics
来源机构Hebrew University of Jerusalem
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/172499
作者单位1.Univ Wisconsin, Dept Geosci, WiscSIMS, Madison, WI 53706 USA;
2.Geol Survey Israel, IL-95501 Jerusalem, Israel;
3.Hebrew Univ Jerusalem, Inst Earth Sci, IL-91904 Jerusalem, Israel
推荐引用方式
GB/T 7714
Orland, Ian J.,Bar-Matthews, Miryam,Ayalon, Avner,et al. Seasonal resolution of Eastern Mediterranean climate change since 34 ka from a Soreq Cave speleothem[J]. Hebrew University of Jerusalem,2012,89:240-255.
APA Orland, Ian J..,Bar-Matthews, Miryam.,Ayalon, Avner.,Matthews, Alan.,Kozdon, Reinhard.,...&Valley, John W..(2012).Seasonal resolution of Eastern Mediterranean climate change since 34 ka from a Soreq Cave speleothem.GEOCHIMICA ET COSMOCHIMICA ACTA,89,240-255.
MLA Orland, Ian J.,et al."Seasonal resolution of Eastern Mediterranean climate change since 34 ka from a Soreq Cave speleothem".GEOCHIMICA ET COSMOCHIMICA ACTA 89(2012):240-255.
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