CAREER: Sediment Dynamics on the Bengal Shelf and Fate of the Ganges-Brahmaputra Floodpulse

职业：孟加拉陆架的沉积物动力学和恒河-雅鲁藏布江洪水脉冲的命运

• 批准号: 0347261
• 负责人: Steven Goodbred
• 金额: $ 50.62万
• 依托单位: SUNY at Stony Brook
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-08-01 至 2006-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0347261&HistoricalAwards=false
• 关键词: CAREER; Sediment; Dynamics; Bengal; Shelf

0347261Goodbred AbstractThe study will focus on the Ganges-Brahmaputra Delta in Bangladesh. Previous work by the PI investigated sediment dispersal across the subaerial delta plain and found the 1/3 of the sediment load was sequestered there and that the inner shelf represents an important gateway of 700 Mt of sediment annually. The PI will investigate sediment dynamics of the inner shelf, including seasonal dispersal of large sediment load, and transport pathways that link the river mouth with shoreline, shelf and canyon depocenters. Four cruises are planned, with CHIRP and side-scan acoustic surveys, coring and lab analysis of the collected data and Be/Th and Pb/Cs dating. The proposed study will provide important insights on the longer term sequence development along this high-yield and high-energy margin. The educational component includes strong collaboration with Bangladeshi scientists, establishing a scholastic program between SUNY and Dhaka University, co-mentoring of students, web-based short courses and recruitment of Bangladeshi students to SUNY.

【摘要】本研究将集中在孟加拉国的恒河-布拉马普特拉河三角洲。PI之前的工作调查了沉积物在陆上三角洲平原上的分散情况，发现1/3的沉积物负荷被隔离在那里，而内大陆架是每年700公吨沉积物的重要门户。PI将调查内大陆架的泥沙动力学，包括大泥沙负荷的季节性分散，以及连接河口与海岸线、大陆架和峡谷沉积中心的运输路径。计划进行四次巡航，包括CHIRP和侧面扫描声学调查，取心和实验室分析收集的数据，以及Be/Th和Pb/Cs定年。该研究将为这一高产高能量边缘的长期序列开发提供重要见解。教育部分包括与孟加拉国科学家的强有力合作、在纽约州立大学和达卡大学之间建立一个学术项目、共同指导学生、网上短期课程以及向纽约州立大学招收孟加拉国学生。