Collaborative Research: Morphodynamics of the Madeira River: an Amazonian anabranching mega-river facing imminent disruption

合作研究：马德拉河的形态动力学：一条面临迫在眉睫的破坏的亚马逊流域巨河

• 批准号: 1147722
• 负责人: Jorge Abad
• 金额: $ 2.99万
• 依托单位: University of Pittsburgh
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-04-15 至 2014-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1147722&HistoricalAwards=false
• 关键词: Collaborative; Research; Morphodynamics; Madeira; River

Morphodynamics of the Madeira River: An Amazonian Anabranching Mega-River Facing Imminent DisruptionThe Madeira River, the largest tributary in water discharge and sediment transport of the Amazon basin, will be dammed by the end of 2012. This project will collect hydrogeomorphologic and hydraulic information before human intervention. The main objectives are to a) analyze the fluvial morphodynamics to understand the mechanism controlling the development of anabranching patterns in this megariver (this information will serve as baseline for examination of anthropogenic effects); b) identify the geoenvironmental mosaic of the floodplain and the morphosedimentary processes controlling its evolution and architectural style, and c) provide predictive mathematical tools and generate new concepts for management of anabranching rivers. The field work in Brazil, using research vessel-based surveys from Porto Velho to Humaita, will span the Madeira's flow before regulation, with surveys during low and high water stages. This project provides a unique and last opportunity to study the dynamics and morphology of the largest tributary of the Amazon River before it is dammed. The researchers will collaborate with Brazilian colleagues on two expeditions in 2012--at low water and high water. In addition to providing rare insights into the workings of so-called "Mega-rivers", the results and data base obtained from these expeditions will be fundamental for assessing and modeling the short and medium-term impacts of the dam on the Amazon and the Amazon plume as a result of the alteration of sediment and water fluxes. The project will support the interdisciplinary education and training of graduate and undergraduate students, and its results are expected to inform Brazilian and international institutions involved in environmental management in the Amazon basin.

马德拉河的形态动力学：一条面临迫在眉睫的破坏的亚马逊河流域异常分支马德拉河是亚马逊流域最大的排水和泥沙输送支流，将于 2012 年底筑坝。该项目将在之前收集水文地貌和水力信息。人为干预。主要目标是 a) 分析河流形态动力学，以了解控制该大河中分支模式发展的机制（该信息将作为检查人为影响的基线）； b) 识别洪泛区的地质环境镶嵌以及控制其演化和建筑风格的形态沉积过程，以及 c) 提供预测数学工具并产生管理分支河流的新概念。 巴西的实地工作将利用从波多韦柳到胡迈塔的研究船进行调查，将在调节前跨越马德拉河的水流，并在低水位和高水位期间进行调查。该项目为研究亚马逊河最大支流筑坝前的动态和形态提供了一个独特的、最后的机会。研究人员将与巴西同事合作，在 2012 年进行两次探险——低水位和高水位。除了提供对所谓“巨型河流”的运作情况的罕见见解外，从这些探险中获得的结果和数据库对于评估和建模大坝对亚马逊和亚马逊河的短期和中期影响至关重要。亚马逊羽流是沉积物和水通量变化的结果。该项目将支持研究生和本科生的跨学科教育和培训，其结果预计将为参与亚马逊流域环境管理的巴西和国际机构提供信息。