Collaborative Research: Geomorphodynamic Modulation of Biogeochemical Fluxes and Basin Stratigraphy of the Fly River

0742526 GoniAbstract基金提供给PI进行多方面、多学科的研究，以了解巴布亚新几内亚Fly河的沉积物和有机物通量。这项工作建立在以前的研究由PI在飞河下游的工作，了解沉积物的输送和分散，并在飞三角洲和海上斜坡了解有机物埋藏在系统中。这项工作将测试三个相关的假设，都是重要的，因为MARGINS的源到汇倡议的既定目标：1）飞河运输，埋葬和封存全球显着数量的有机碳; 1）渠道和洪泛区之间的沉积物交换过程调制地球化学通量，3）部分和全部渠道撕脱治理沉积物和碳积累在远端洪泛区。计划对洪泛区进行实地调查、取样和取芯，并在三个不同的机构进行实验室研究和建模工作。

0742526 GoniAbstract Funds are provided for the PIs to carry out a multi-faceted, multi-disciplinary research towards understanding sediment and organic matter fluxes in the Fly River, Papua New Guinea. The work builds on previous study by the PIs working in the lower reaches of the Fly River River to understand sediment delivery and dispersal, and in the Fly delta and offshore clinoform to understand organic matter burial in the system. The work will test three related hypotheses, all important as the stated goals of the MARGINS' source-to-sink initiative: 1) that the Fly River transports, buries and sequesters a globally significant amount of organic carbon; 1) sediment exchange processes between channels and floodplains modulate biogeochemical fluxes, and 3) partial and full channel avulsions govern sediment and carbon accumulation across the distal floodplain. Field surveys and sampling and coring of the floodplains is planned, as are lab studies and modeling efforts at three different institutions.