Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1002/esp.3315 |
Contemporary glacigenic inputs to the dust cycle | |
Bullard, Joanna E. | |
通讯作者 | Bullard, Joanna E. |
来源期刊 | EARTH SURFACE PROCESSES AND LANDFORMS
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ISSN | 0197-9337 |
EISSN | 1096-9837 |
出版年 | 2013 |
卷号 | 38期号:1页码:71-89 |
英文摘要 | The importance of glacigenic dust in the Earth’s system during glacial periods is widely acknowledged. Under contemporary conditions, the world’s largest dust sources are in low-lying, hot, arid regions and this is where most aeolian research is focused. However the processes of dust production and emissions are still operating in cold climate regions, particularly in proglacial areas. This paper assesses current understanding of the relationship between glacierised landscapes and dust emissions and inputs to the global dust cycle. It focuses on how elements in the glacial and aeolian geomorphic sub-systems interact to determine the magnitude, frequency and timing of aeolian dust emissions, and on feedback mechanisms between the systems. Where they have been measured, dust emission intensity and deposition rates in glacierised catchments are very high, in some cases far exceeding those in lower latitudes, however, few studies span long time scales. The impact of future glacier retreat on the balance between sediment supply, availability and aeolian transport capacity and implications for glacigenic dust emissions is also considered. This balance depends on relative spatial and temporal changes in meltwater suspended sediment concentration and wind strengths, which promote dust emissions, and patterns and rates of soil development and vegetation succession on recently-deglaciated terrain which protect sediments from deflation. Retreat of the Antarctic ice sheet could mean that in future glacigenic contributions to the dust cycle exceed those of non-glacigenic sources in the southern hemisphere. Copyright (c) 2012 John Wiley & Sons, Ltd. |
英文关键词 | glacierised landscape dust cycle ice retreat dust deposition |
类型 | Review |
语种 | 英语 |
国家 | England |
收录类别 | SCI-E ; SSCI |
WOS记录号 | WOS:000313257000007 |
WOS关键词 | GREENLAND ICE-SHEET ; SUSPENDED SEDIMENT DYNAMICS ; SOUTHERN-VICTORIA-LAND ; MCMURDO DRY VALLEYS ; HIGH-ARCTIC GLACIER ; AEOLIAN DUST ; WIND EROSION ; DESERT DUST ; PRIMARY SUCCESSION ; EOLIAN SEDIMENT |
WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
WOS研究方向 | Physical Geography ; Geology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/176632 |
作者单位 | (1)Univ Loughborough, Dept Geog, Loughborough LE11 3TU, Leics, England |
推荐引用方式 GB/T 7714 | Bullard, Joanna E.. Contemporary glacigenic inputs to the dust cycle[J],2013,38(1):71-89. |
APA | Bullard, Joanna E..(2013).Contemporary glacigenic inputs to the dust cycle.EARTH SURFACE PROCESSES AND LANDFORMS,38(1),71-89. |
MLA | Bullard, Joanna E.."Contemporary glacigenic inputs to the dust cycle".EARTH SURFACE PROCESSES AND LANDFORMS 38.1(2013):71-89. |
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文件名称/大小 | 资源类型 | 版本类型 | 开放类型 | 使用许可 | ||
Contemporary glacige(7980KB) | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 |
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