Sediment trapping pathways and mechanisms through the Mekong tidal river, mangrove shoreline and subaqueous delta
Abstract
Rivers are the largest suppliers of particulate material to the world ocean, and in order to compare the mass budgets of major rivers and adjacent oceans we must understand the processes occurring in the tidal river, deltaic distributaries, and associated river-mouth shoreline environments. This proposed effort addresses processes in the main stem of tidal Mekong River, on the mangrove shorelines, and on the nearshore subaqueous delta. We propose to complete the second of two seasonal field efforts, and analyze and interpret the data sets collected over both high and low river-flow conditions. The field plan consists of both boatmounted and fixed instrumentation in the different environments in a coordinated design with other Tropical Deltas DRI participants (US and Global). We seek to understand how the tidal river modulates the quantity, grain size, and pathways of sediment, and thus the distribution of sediment from the river distributaries to one of two depositional sites: the mangrove shorelines or the prograding subaqueous delta. Thus, we will be able to show how processes in tidal rivers exert a control on the ultimate fate of sediment particles and characteristics of the seabed. Additionally, we propose to incorporate training and capacity building activities for the collaborating Vietnamese scientific communities into our research efforts.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 12, 2016
- Source ID
- N000141512011
Entities
People
- Andrea S. Ogston
Organizations
- Office of Naval Research
- United States Navy
- University of Washington