As sediment is transported through river corridors, it typically spends more time in storage than transport, and as a result, delivery timescales are controlled by the duration of storage. Present understanding largely derived from models or field studies covering relatively short (≤102 year) spans. Here we quantify distribution for 17 km length Powder River Montana, USA determining age eroded ...

The statistics of meander and related problems are studied as particular realizations of compact polymer chain foldings. This paper presents a general discussion of these topics, with a particular emphasis on three points: (i) the use of a direct recursive relation for building (semi) meanders (ii) the equivalence with a random matrix model (iii) the exact solution of simpler related problems, ...

This is the first of three papers on the geometric and combinatorial characterization of global Sturm attractors which consist of a single closed 3-ball. The underlying scalar PDE is parabolic, ut = uxx + f(x, u, ux) , on the unit interval 0 < x < 1 with Neumann boundary conditions. Equilibria are assumed to be hyperbolic. The geometric description is in terms of the regular cell complex define...

Baltic Sea is one of the World's most oxygen-depletes seas, so region requires urgent mitigation measures to significantly reduce nitrogen and phosphorus inputs from land through rivers, which cannot be achieved without large-scale restoration wetland buffer zones. The manuscript summarizes findings discrete choice experiment aimed at assessment preferences Danish, German, Polish citizens towar...

Cristina Barrón*, Eugenia T. Apostolaki and Carlos M. Duarte 1 Griffith School of Environment, Australian Rivers Institute-Coast and Estuaries, and Australian Research Council Centre of Excellence for Coral Reef Studies, Griffith University, Brisbane, QLD, Australia 2 Hellenic Centre for Marine Research, Institute of Oceanography, Heraklion, Greece 3 Department of Global Change Research, Instit...

Parallel programming is characterized by a growing set of parallel architectures, paradigms and programming languages. The question how to support a programmer best in designing and implementing a parallel program is still an important topic of research. This is especially true when trying to utilize distributed memory machines (e.g. Transputers or workstation clusters). For many application ar...

It has recently been hypothesized that intertidal mussel beds and seaweed canopies in the Gulf of Maine are alternate community stable states or disturbance patch mosaics dominated by either seaweed or mussel communities. The community that occurs in a given site is proposed to be stochastic and dependent on the size of the original disturbance and subsequent recruit availability. Large disturb...