Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1912921117 |
Water level changes, subsidence, and sea level rise in the Ganges-Brahmaputra-Meghna delta | |
Becker, Melanie1; Papa, Fabrice2,3; Karpytchev, Mikhail1; Delebecque, Caroline2; Krien, Yann4; Khan, Jamal Uddin2,5; Ballu, Valerie1; Durand, Fabien2; Le Cozannet, Goneri6; Islam, A. K. M. Saiful5; Calmant, Stephane2; Shum, C. K.7,8 | |
2020-01-28 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2020 |
卷号 | 117期号:4页码:1867-1876 |
文章类型 | Article |
语种 | 英语 |
国家 | France; India; Bangladesh; USA; Peoples R China |
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 (similar to 3 mm/y), than global mean sea level (similar to 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 Nino Southern Oscillation (ENSO) and Indian Ocean Dipole (IOD) variability, with WL lower than average by 30 to 60 cm during co-occurrent El Nino and positive IOD events and higher-than-average WL, by 16 to 35 cm, during La Nina 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. |
英文关键词 | delta water level sea level subsidence Bangladesh |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000509791700013 |
WOS关键词 | INDIAN-OCEAN ; NORTHERN BAY ; EL-NINO ; VARIABILITY ; BANGLADESH ; REGRESSION ; IMPACTS ; DIPOLE ; MOTION ; BENGAL |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
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/249638 |
专题 | 地球科学 |
作者单位 | 1.Univ La Rochelle, CNRS, Littoral Environm & Soc, F-17000 La Rochelle, France; 2.Univ Toulouse Paul Sabatier, Lab Etud Geophys & Oceanog Spatiales, CNRS, Inst Rech Dev,Ctr Natl Etud Spatiales, F-31400 Toulouse, France; 3.Indian Inst Sci, Int Joint Lab Inst Rech Dev & Indian Inst Sci, Indo French Cell Water Sci, Bangalore 560012, Karnataka, India; 4.Univ Antilles, Lab Rech Geosci & Energies, F-97159 Pointe A Pitre, France; 5.Bangladesh Univ Engn & Technol, Inst Water & Flood Management, Dhaka 1000, Bangladesh; 6.Bur Rech Geol & Minieres, F-45060 Orleans, France; 7.Ohio State Univ, Sch Earth Sci, Div Geodet Sci, Columbus, OH 43210 USA; 8.Chinese Acad Sci, Inst Geodesy & Geophys, Wuhan 430077, Peoples R China |
推荐引用方式 GB/T 7714 | Becker, Melanie,Papa, Fabrice,Karpytchev, Mikhail,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,2020,117(4):1867-1876. |
APA | Becker, Melanie.,Papa, Fabrice.,Karpytchev, Mikhail.,Delebecque, Caroline.,Krien, Yann.,...&Shum, C. K..(2020).Water level changes, subsidence, and sea level rise in the Ganges-Brahmaputra-Meghna delta.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,117(4),1867-1876. |
MLA | Becker, Melanie,et al."Water level changes, subsidence, and sea level rise in the Ganges-Brahmaputra-Meghna delta".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 117.4(2020):1867-1876. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论