Counter-intuitive influence of Himalayan river morphodynamics on Indus Civilisation urban settlements.
Counter-intuitive influence of Himalayan river morphodynamics on Indus Civilisation urban settlements.
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DOI：
10.1038/s41467-017-01643-9
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发表时间：
2017-11-28
影响因子：
16.6
通讯作者：
Gupta S
中科院分区：
文献类型：
--
作者：
Singh A;Thomsen KJ;Sinha R;Buylaert JP;Carter A;Mark DF;Mason PJ;Densmore AL;Murray AS;Jain M;Paul D;Gupta S
青铜时代的印度河文明(距今约4.6-3.9万年)的城市化与大型喜马拉雅水系提供的水资源有关，尽管城市规模最大的印度河聚居地位于远离现存的喜马拉雅河的地方。在这里，我们分析了与这些聚落相关的一条主要古河道的沉积结构、年代学和物源。我们证明，古河道是苏特勒河的前身，苏特勒河是今天喜马拉雅河中的第三大河。利用砂粒的光激发发光测年，我们证明了苏特勒日流在这一过程中终止的时间比印度河占领早得多，在~8 ka之后不久就完成了转向现在的过程。因此，印度河城市聚落沿着废弃的河谷而不是活跃的喜马拉雅河发展。在约8 ka之后，将Sutlej限制在目前的切割航线上，可能会降低其频繁改道的倾向，从而使位于残留古河道沿线的印度河定居点能够长期稳定。青铜时代的印度河文明(4.6-3.9 ka)被认为与喜马拉雅山水资源的开发有关。在这里，作者表明，沿着萨特勒河的前河道，印度河定居点沿着废弃的河谷发展，而不是活跃的喜马拉雅河。
Urbanism in the Bronze-age Indus Civilisation (~4.6–3.9 thousand years before the present, ka) has been linked to water resources provided by large Himalayan river systems, although the largest concentrations of urban-scale Indus settlements are located far from extant Himalayan rivers. Here we analyse the sedimentary architecture, chronology and provenance of a major palaeochannel associated with many of these settlements. We show that the palaeochannel is a former course of the Sutlej River, the third largest of the present-day Himalayan rivers. Using optically stimulated luminescence dating of sand grains, we demonstrate that flow of the Sutlej in this course terminated considerably earlier than Indus occupation, with diversion to its present course complete shortly after ~8 ka. Indus urban settlements thus developed along an abandoned river valley rather than an active Himalayan river. Confinement of the Sutlej to its present incised course after ~8 ka likely reduced its propensity to re-route frequently thus enabling long-term stability for Indus settlements sited along the relict palaeochannel. The Bronze-age Indus civilisation (4.6–3.9 ka) was thought to have been linked to the development of water resources in the Himalayas. Here, the authors show that along the former course of the Sutlej River the Indus settlements developed along the abandoned river valley rather than an active Himalayan river.
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影响因子：
2
作者：
East, Amy E.;Clift, Peter D.;VanLaningham, Sam
通讯作者：
VanLaningham, Sam
影响因子：
3.4
作者：
Gupta, A. K.;Sharma, J. R.;Sreenivasan, G.
通讯作者：
Sreenivasan, G.
影响因子：
5.2
作者：
Dutt, Som;Gupta, Anil K.;Edwards, R. Lawrence
通讯作者：
Edwards, R. Lawrence
DOI：
10.1073/pnas.1112743109
发表时间：
2012-06-26
影响因子：
11.1
作者：
Giosan, Liviu;Clift, Peter D.;Syvitski, James P. M.
通讯作者：
Syvitski, James P. M.
4100 年前印度西北部夏季季风突然减弱
影响因子：
5.8
作者：
Dixit, Yama;Hodell, David A.;Petrie, Cameron A.
通讯作者：
Petrie, Cameron A.