Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1808103115 |
Precise timing of abrupt increase in dust activity in the Middle East coincident with 4.2 ka social change | |
Carolin, Stacy A.1; Walker, Richard T.1; Day, Christopher C.1; Ersek, Vasile2; Sloan, R. Alastair3; Dee, Michael W.4; Talebian, Morteza5; Henderson, Gideon M.1 | |
2019 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2019 |
卷号 | 116期号:1页码:67-72 |
文章类型 | Article |
语种 | 英语 |
国家 | England; South Africa; Netherlands; Iran |
英文摘要 | The extent to which climate change causes significant societal disruption remains controversial. An important example is the decline of the Akkadian Empire in northern Mesopotamia similar to 4.2 ka, for which the existence of a coincident climate event is still uncertain. Here we present an Iranian stalagmite record spanning 5.2 ka to 3.7 ka, dated with 25 U/Th ages that provide an average age uncertainty of 31 y (1 sigma). We find two periods of increased Mg/Ca, beginning abruptly at 4.51 and 4.26 ka, and lasting 110 and 290 y, respectively. Each of these periods coincides with slower vertical stalagmite growth and a gradual increase in stable oxygen isotope ratios. The periods of high Mg/Ca are explained by periods of increased dust flux sourced from the Mesopotamia region, and the abrupt onset of this dustiness indicates threshold behavior in response to aridity. This interpretation is consistent with existing marine and terrestrial records from the broad region, which also suggest that the later, longer event beginning at 4.26 ka is of greater regional extent and/or amplitude. The chronological precision and high resolution of our record indicates that there is no significant difference, at decadal level, between the start date of the second, larger dust event and the timing of North Mesopotamia settlement abandonment, and furthermore reveals striking similarity between the total duration of the second dust event and settlement abandonment. The Iranian record demonstrates this region's threshold behavior in dust production, and its ability to maintain this climate state for multiple centuries naturally. |
英文关键词 | 4.2 ka event stalagmite drought Mesopotamia dust |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000454707700015 |
WOS关键词 | HOLOCENE CLIMATE-CHANGE ; SOURCE AREAS ; WEST ASIA ; CAVE ; VARIABILITY ; COLLAPSE ; RECORDS ; DEPOSITION ; SEDIMENTS ; RATIOS |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/205055 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Univ Oxford, Dept Earth Sci, Oxford OX1 3AN, England; 2.Northumbria Univ, Dept Geog & Environm Sci, Newcastle Upon Tyne NE1 8ST, Tyne & Wear, England; 3.Univ Cape Town, Dept Geol Sci, ZA-7701 Rondebosch, South Africa; 4.Univ Groningen, Ctr Isotope Res, NL-9747 AG Groningen, Netherlands; 5.Geol Survey Iran, Res Inst Earth Sci, Tehran, Iran |
推荐引用方式 GB/T 7714 | Carolin, Stacy A.,Walker, Richard T.,Day, Christopher C.,et al. Precise timing of abrupt increase in dust activity in the Middle East coincident with 4.2 ka social change[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2019,116(1):67-72. |
APA | Carolin, Stacy A..,Walker, Richard T..,Day, Christopher C..,Ersek, Vasile.,Sloan, R. Alastair.,...&Henderson, Gideon M..(2019).Precise timing of abrupt increase in dust activity in the Middle East coincident with 4.2 ka social change.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,116(1),67-72. |
MLA | Carolin, Stacy A.,et al."Precise timing of abrupt increase in dust activity in the Middle East coincident with 4.2 ka social change".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 116.1(2019):67-72. |
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