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

[0742526]摘要为PIs提供了资金，以开展多方面、多学科的研究，以了解巴布亚新几内亚Fly河的沉积物和有机质通量。这项工作建立在先前的研究基础上，pi在Fly河下游工作，以了解沉积物的输送和扩散，并在Fly三角洲和近海斜形区工作，以了解系统中的有机质埋藏。这项工作将测试三个相关的假设，所有这些假设都对边际从源头到汇计划的既定目标很重要：1)飞河运输、掩埋和封存了全球大量的有机碳；1)河道与洪泛平原之间的泥沙交换过程调节了生物地球化学通量；3)部分和全部河道的冲刷控制了远端洪泛平原的泥沙和碳积累。计划对泛滥平原进行实地调查、取样和取芯，同时还计划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.