Tidal channel networks mediate the exchange of water, nutrients and sediment between an estuary and marshes. Biology feeds back into channel morphodynamics through the influence of vegetation on both flow and the cohesive strength of channel banks. Determining how vegetation affects channel networks is essential in understanding the biological functioning of intertidal ecosystems and their ecos...

An analytical solution of the equilibrium distribution of suspended sediment concentrations (SSC) in an estuary along the longitudinal axis is extended to include variable width. A turbidity maximum is formed at the convergence of fluxes from freshwater discharge and (vertically well mixed) salinity gradients. Simple scaling relationships control the longitudinal distribution of SSC and depend ...

It has been previously proposed that alkalinity release from sediments can play an important role in the carbonate dynamics on continental shelves, lowering the pCO2 of seawater and hence increasing the CO2 uptake from the atmosphere. To test this hypothesis, sedimentary alkalinity generation was quantified within cohesive and permeable sediments across the North Sea during two cruises in Septe...

The U.S. Department of Agriculture-Natural Resources Conservation Service has recommended domestic cattle grazing exclusion from riparian corridors for decades. This recommendation was based on a belief that domestic cattle grazing would typically destroy stream bank vegetation and in-channel habitat. Continuous grazing (CG) has caused adverse environmental damage, but along cohesive-sediment s...

[1] In this, the first of a pair of papers which address the simulation and automated measurement of well-sorted natural granular material, a method is presented for simulation of two-phase (solid, void) assemblages of discrete non-cohesive particles. The purpose is to have a flexible, yet computationally and theoretically simple, suite of tools with well constrained and well known statistical ...

Preprint of Capape, S., Martín-Vide, J., and Colombo, F. (2016). “Subaqueous Barchans and 1 Plane Beds from Deposition of Quartz Silt.” J. Hydraul. Eng., 10.1061/(ASCE)HY.19432 7900.0001212, 06016020 3 Subaqueous Barchans and Plane Beds from Deposition of Quartz Silt 4 S. Capape*, J.P. Martín-Vide, and F. Colombo 5 Abstract 6 The suspension flow of quartz silt (geometric mean grain size of 4.15...

Abstract A computational fluid dynamics numerical model addressed the problem of local scouring and deposition calculation for non-cohesive sediment clear water conditions near single double cylindrical piers. The results piers correlate very well with physical model's while are higher than case pier, especially when large-eddy turbulence model, van Rijn bed-load transport equation, fine mesh s...

We study some generalized notions of cohesiveness which arise naturally in connection with eeective versions of Ram-sey's Theorem. An innnite set A of natural numbers is n{cohesive (respectively, n{r{cohesive) if A is almost homogeneous for every computably enumerable (respectively, computable) 2{coloring of the n{element sets of natural numbers. (Thus the 1{cohesive and 1{r{cohesive sets coinc...

We describe a framework for the simultaneous estimation of model parameters in partial differential equation using sparse observations. Markov Chain Monte Carlo sampling is used Bayesian to estimate posterior probability distributions each parameter. necessary components this approach and its broad potential application models unsteady processes. The applied three case studies, increasing compl...