GRACE observed mass loss in the middle and lower Yangtze basin
GRACE observed mass loss in the middle and lower Yangtze basin
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GRACE观测到长江中下游地区质量损失
DOI：
10.1016/j.geog.2018.06.008
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发表时间：
2019-03
影响因子：
2.4
通讯作者：
Wan Xiaoyun
中科院分区：
文献类型：
--
作者：
Ran Jiangjun;Tangdamrongsub Natthachet;Shi Junchao;Wang Changqing;Wang Lihui;Wan Xiaoyun
人为建筑对环境有很大的影响。三峡大坝作为世界上最大的大坝就是一个典型的例子，自2003年6月以来，三峡大坝影响了长江下游水流输送的质量异常。然而，TGD对下游大众运输的影响的证据并未记录在案。在这项研究中，我们分析了GRACE的月重力解，以调查长江下游质量的变化。从我们的结果来看，TGD下游有相当大的质量损失。通过与TGD现场水位资料的比较，我们发现大同站GRACE的质量变化在TGD蓄水后不久就减小了。此外，通过与宜昌站和大同站的现场输沙和河道流量进行比较，发现两站的输沙资料具有相似的质量损失特征，而两站的河道流量保持在一个相对稳定的水平。这说明仍需进一步研究，以更好地了解其作用机制。
Anthropogenic architectures have a significant impact to the environment. The Three Gorges Dam (TGD),.as the largest dam in the world, is a typical example, and has influenced the mass anomalies transported.by the flow downstream in the Yangtze River since June 2003. However, the evidence of TGD influence.on downstream mass transportation is not documented. In this study, we analyze the monthly gravity.solutions from GRACE to investigate the downstream mass variations of Yangtze River. From our results,.the considerable mass loss is detected in the downstream of TGD. By comparing our estimations with the.in situ water level data of TGD, we find that the mass variations derived from GRACE at Datong station.decreases shortly after the impoundment of TGD. This confirms a strong connection between them..Furthermore, by comparing with the in situ sediment load and river discharge at Yichang and Datong.gauging stations, we find that the sediment load data shows a similar mass loss signature while the river.discharge of both stations has stay at a relative stable level. This indicates that further study is still.needed to understand the mechanism better.
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影响因子：
5.4
作者：
Xianwei Wang;C. de Linage;J. Famiglietti;C. Zender
通讯作者：
Xianwei Wang;C. de Linage;J. Famiglietti;C. Zender
影响因子：
5.4
作者：
Schmidt, John C.;Wilcock, Peter R.
通讯作者：
Wilcock, Peter R.
影响因子：
--
作者：
Hao Yu;Ying Wu;Jing Zhang;B. Deng;Zhuoyi Zhu
通讯作者：
Hao Yu;Ying Wu;Jing Zhang;B. Deng;Zhuoyi Zhu
影响因子：
3.9
作者：
Wahr, J;Molenaar, M;Bryan, F
通讯作者：
Bryan, F
影响因子：
3.9
作者：
Swenson, Sean;Chambers, Don;Wahr, John
通讯作者：
Wahr, John