Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL072999 |
Elastic deformation of the Australian continent induced by seasonal water cycles and the 2010-2011 La Nina determined using GPS and GRACE | |
Han, Shin-Chan | |
2017-03-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:6 |
文章类型 | Article |
语种 | 英语 |
国家 | Australia |
英文摘要 | The solid Earth deforms elastically in response to changes in atmospheric, water, and ice mass load. I present geodetic (Gravity Recovery and Climate Experiment and GPS) observations of continental deformation at seasonal and interannual scales, responding to water and atmospheric cycles in Australia. In the southern summer, the central part of the Australian continent rises by a few millimeter and the north-south perimeter lengthens by similar to 1mm, induced by atmospheric unloading. In winter, the continent subsides and the perimeter shortens due to atmospheric loading. In autumn, increased soil moisture and groundwater result in 7mm of subsidence in northern Australia and produce a positive slope trending southward. This trend reverses in spring. The La Nina precipitation in 2010-2011 produced widespread subsidence of >10mm, followed by gradual uplift of 10mm over the next 3-4years, as water storage depletes slowly through evapotranspiration. The geodetic measurements find significant imbalance in the water cycle budget in Australia over 2010-2015. Plain Language Summary This study finds how the Australian continent has deformed responding to atmospheric and water cycle changes sustained over periods of long-term droughts and the heavy precipitation during the La Nina. The majority of the Australian continent was depressed by the La Nina water load in 2010-2011 and slowly rebounded afterward as the water evaporates from the continent. The geodetic measurements (like GPS and Gravity Recovery and Climate Experiment) find significant imbalance in the water cycle budget in Australia over 2010-2015. |
英文关键词 | GPS GRACE deformation hydrology atmosphere loading |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000399762700018 |
WOS关键词 | VARIABILITY ; BASIN ; EARTH ; MASS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/28802 |
专题 | 气候变化 |
作者单位 | Univ Newcastle, Sch Engn, Callaghan, NSW, Australia |
推荐引用方式 GB/T 7714 | Han, Shin-Chan. Elastic deformation of the Australian continent induced by seasonal water cycles and the 2010-2011 La Nina determined using GPS and GRACE[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(6). |
APA | Han, Shin-Chan.(2017).Elastic deformation of the Australian continent induced by seasonal water cycles and the 2010-2011 La Nina determined using GPS and GRACE.GEOPHYSICAL RESEARCH LETTERS,44(6). |
MLA | Han, Shin-Chan."Elastic deformation of the Australian continent induced by seasonal water cycles and the 2010-2011 La Nina determined using GPS and GRACE".GEOPHYSICAL RESEARCH LETTERS 44.6(2017). |
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