The proportionality between raindrop-driven soil erosion delivery and area of soil exposed to raindrops under a uniform precipitation rate was investigated in terms of individual size classes using laboratory flume experiments. In particular, we examined the dependence of soil erosion on the area exposed to raindrop detachment. Twelve experiments were performed on the same laboratory flume, fil...

[1] We explored the dependence of experimental bedrock erosion rate on shear stress, bed load sediment flux, alluvial bed cover, and evolving channel morphology. We isolated these variables experimentally by systematically varying gravel sediment flux Qs and water discharge Qw in a laboratory flume, gradually abrading weak concrete “bedrock.” All else held constant, we found that (1) erosion ra...

We present experimental results for water wave turbulence excited by piston-like programmed wavemakers in a water flume with dimensions 6 × 12 × 1.5 meters. Our main finding is that for a wide range of excitation amplitudes the energy spectrum has a power-law scaling, Eω ∼ ω−ν . These scalings were achieved in up to one-decade wide frequency range, which is significantly wider than the range av...

INTRODUCTION The Cross-shore Transport Experiment (CROSSTEX) is a multi-investigator, multi-university, scientific research project centered around a coordinated series of near-prototype scale experiments that were conducted at Oregon State University's O.H. Hinsdale Wave Research Laboratory (HWRL) during the summer of 2005 (Maddux et al, 2006). The experiments took place in the 104m long, 3.7m...

Today’s computing trends are not favorable for data security. On the one hand, software systems are exploding in size and complexity, exposing more vulnerable code to attackers. On the other, users store more valuable data on their machines and on websites, giving attackers ever larger incentives. Industry’s approach is a game of catch-up, a constant stream of piecemeal security patches. In aca...

In order to measure flow rate in open channels, including irrigation hydraulic structures are used with a relatively high degree of reliance. Venturi flumes among the most common and efficient type, they can discharge using only water level at specific point within converging section an empirical relationship. There have been limited number attempts simulate venturi flume computational fluid dy...