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

这项研究将集中在孟加拉国的恒河-雅鲁藏布江三角洲。PI以前的工作调查了泥沙在陆上三角洲平原上的扩散，发现三分之一的泥沙负荷被隔离在那里，内陆架是每年70万吨泥沙的重要门户。PI将调查内陆架的沉积物动力学，包括大泥沙负荷的季节性扩散，以及连接河口与海岸线、陆架和峡谷沉积中心的运输路径。计划进行四次巡航，进行啁啾和侧扫声学调查，对收集的数据进行取心和实验室分析，并进行Be/Th和Pb/Cs测年。这项拟议的研究将为沿着这一高产和高能边缘的较长期层序发展提供重要的见解。教育部分包括与孟加拉科学家的密切合作，在纽约州立大学和达卡大学之间建立一个学术方案，共同指导学生，在网上开设短期课程，以及在纽约州立大学招收孟加拉国学生。

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.