Nonuniform field runoff can reduce the effectiveness of filter strips that are a uniform size along a field margin. Effectiveness can be improved by placing more filter strip where the runoff load is greater and less where the load is smaller. A modeling analysis was conducted of the relationship between pollutant trapping efficiency and the ratio of filter strip area to upslope contributing ar...

The long-term goal of this project is to understand the patterns and timing of latest Pleistocene sedimentation in the Geoclutter area of the NJ margin. Paleoenvironmental reconstructions of the study area were developed using benthic foraminifera and sediment texture analyses of drill cores obtained in Fall 2002 using the ACHC-800 from the RV Knorr. This award was extended through October 31, ...

Improving wind erosion prediction and control requires correct estimates of the suspended dust (ss) and saltation (sn) components from field erosion events. The objectives of this study were to (a) develop an improved methodology (HPS) to estimate the fractions of sn and ss in the sediment discharge, and (b) compare HPS predictions to those of LM (Leys and McTainsh, 1996) and CN (Chepil and Woo...

In this paper we present two new texture segmentation algorithms based on local spectrum analysis with the two dimensional S-Transform. The effectiveness of these algorithms is demonstrated both on simple synthetic images, and complicated, real images of glacial sediment deposits. The S-Transform method is robust and is insensitive to changes in light intensity, and moisture variations. The eff...

A three-dimensional (3D) texture model was developed to help characterize the aquifer system of Central Valley, California (USA), for a groundwater flow model. The 52,000-km Central Valley aquifer system consists of heterogeneous valley-fill deposits. The texture model was developed by compiling and analyzing approximately 8,500 drillers’ logs, describing lithologies up to 950m below land surfa...

Current streambank restoration efforts focus on providing bank stability, enhancing water quality, and improving woody habitat using native vegetation rather than traditional engineering techniques. However, in most cases harsh site conditions limit restoration success. A two-year field study was conducted at Twentymile Creek, in northern Mississippi, investigating edaphic factors governing the...

Erosion from forest roads is an important contribution to the sediment budget of many forested basins, particularly over short time scales. Sediment production from 74 road segments was measured over three years to examine how road slope, segment length, cutslope height, and soil texture affect sediment production and how these relationships change with time. In the first year, differences in s...