globalchange  > 气候变化与战略
DOI: 10.1073/pnas.1912921117
论文题名:
Water level changes; subsidence; and sea level rise in the Ganges-Brahmaputra-Meghna delta
作者: Becker M.; Papa F.; Karpytchev M.; Delebecque C.; Krien Y.; Khan J.U.; Ballu V.; Durand F.; Le Cozannet G.; Islam A.K.M.S.; Calmant S.; Shum C.K.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2020
卷: 117, 期:4
起始页码: 1867
结束页码: 1876
语种: 英语
英文关键词: Bangladesh ; Delta ; Sea level ; Subsidence ; Water level
Scopus关键词: fresh water ; water ; acceleration ; Article ; atmospheric moisture ; carbon footprint ; climate change ; controlled study ; dynamics ; El Nino ; environmental impact ; environmental parameters ; evolution ; evolutionary adaptation ; India ; priority journal ; sea level ; sea surface temperature ; stream (river) ; subsidence ; water analysis
英文摘要: Being one of the most vulnerable regions in the world, the Ganges-Brahmaputra-Meghna delta presents a major challenge for climate change adaptation of nearly 200 million inhabitants. It is often considered as a delta mostly exposed to sea-level rise and exacerbated by land subsidence, even if the local vertical land movement rates remain uncertain. Here, we reconstruct the water-level (WL) changes over 1968 to 2012, using an unprecedented set of 101 water-level gauges across the delta. Over the last 45 y, WL in the delta increased slightly faster (∼3 mm/y), than global mean sea level (∼2 mm/y). However, from 2005 onward, we observe an acceleration in the WL rise in the west of the delta. The interannual WL fluctuations are strongly modulated by El Niño Southern Oscillation (ENSO) and Indian Ocean Dipole (IOD) variability, with WL lower than average by 30 to 60 cm during cooccurrent El Niño and positive IOD events and higher-thanaverage WL, by 16 to 35 cm, during La Niña years. Using satellite altimetry and WL reconstructions, we estimate that the maximum expected rates of delta subsidence during 1993 to 2012 range from 1 to 7 mm/y. By 2100, even under a greenhouse gas emission mitigation scenario (Representative Concentration Pathway [RCP] 4.5), the subsidence could double the projected sea-level rise, making it reach 85 to 140 cm across the delta. This study provides a robust regional estimate of contemporary relative WL changes in the delta induced by continental freshwater dynamics, vertical land motion, and sea-level rise, giving a basis for developing climate mitigation strategies. © 2020 National Academy of Sciences. All rights reserved.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/164347
Appears in Collections:气候变化与战略

Files in This Item:

There are no files associated with this item.


作者单位: Becker, M., Littoral Environnement et Sociétés, Centre National de la Recherche Scientifique, Université de la Rochelle, La Rochelle, 17000, France; Papa, F., Laboratoire d'Etudes en Géophysique et Océanographie Spatiales, Centre National de la Recherche Scientifique, Institut de Recherche Pour le Développement, Université Toulouse Paul Sabatier, Centre National d'Études Spatiales, Toulouse, 31400, France, Indo-French Cell for Water Sciences, International Joint Laboratory Institut de Recherche Pour le Développement, Indian Institute of Science, Bangalore, 560012, India; Karpytchev, M., Littoral Environnement et Sociétés, Centre National de la Recherche Scientifique, Université de la Rochelle, La Rochelle, 17000, France; Delebecque, C., Laboratoire d'Etudes en Géophysique et Océanographie Spatiales, Centre National de la Recherche Scientifique, Institut de Recherche Pour le Développement, Université Toulouse Paul Sabatier, Centre National d'Études Spatiales, Toulouse, 31400, France; Krien, Y., Laboratoire de Recherche en Géosciences et Energies, Université des Antilles, Pointe-à-Pitre, 97159, France; Khan, J.U., Laboratoire d'Etudes en Géophysique et Océanographie Spatiales, Centre National de la Recherche Scientifique, Institut de Recherche Pour le Développement, Université Toulouse Paul Sabatier, Centre National d'Études Spatiales, Toulouse, 31400, France, Institute of Water and Flood Management, Bangladesh University of Engineering and Technology, Dhaka, 1000, Bangladesh; Ballu, V., Littoral Environnement et Sociétés, Centre National de la Recherche Scientifique, Université de la Rochelle, La Rochelle, 17000, France; Durand, F., Laboratoire d'Etudes en Géophysique et Océanographie Spatiales, Centre National de la Recherche Scientifique, Institut de Recherche Pour le Développement, Université Toulouse Paul Sabatier, Centre National d'Études Spatiales, Toulouse, 31400, France; Le Cozannet, G., Bureau de Recherches Géologiques et Minières, Orléans Cedex, 45060, France; Islam, A.K.M.S., Institute of Water and Flood Management, Bangladesh University of Engineering and Technology, Dhaka, 1000, Bangladesh; Calmant, S., Laboratoire d'Etudes en Géophysique et Océanographie Spatiales, Centre National de la Recherche Scientifique, Institut de Recherche Pour le Développement, Université Toulouse Paul Sabatier, Centre National d'Études Spatiales, Toulouse, 31400, France; Shum, C.K., Division of Geodetic Science, School of Earth Sciences, Ohio State University, Columbus, OH 43210, United States, Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan, 430077, China

Recommended Citation:
Becker M.,Papa F.,Karpytchev M.,et al. Water level changes; subsidence; and sea level rise in the Ganges-Brahmaputra-Meghna delta[J]. Proceedings of the National Academy of Sciences of the United States of America,2020-01-01,117(4)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Becker M.]'s Articles
[Papa F.]'s Articles
[Karpytchev M.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Becker M.]'s Articles
[Papa F.]'s Articles
[Karpytchev M.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Becker M.]‘s Articles
[Papa F.]‘s Articles
[Karpytchev M.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.