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The potential of using an acoustic source for enhanced remediation of NAPL
Acoustic Stimulation (AS), is a technology in which an acoustic signal is introduced to the subsurface with the aim to affect NAPL phases. During a HIP pilot (2006-2009, with contractor HMVT) two field pilot tests were conducted with AS and effects on NAPL phases were recorded both at the LNAPL and DNAPL site.
Stability of rubble mound breakwaters with a berm : the upper slope
Physical model tests were performed to obtain information on the stability of rock slopes with a horizontal berm. This paper is focussed on the rock slope stability of the slope above the berm.
A stochastic formulation for erosion of cohesive sediments
Fine (cohesive) sediments play a key role in aquatic ecosystems as these ediments in suspension determine light penetration into the water column hence affect rimaryproduction determine the strata of the seabed supporting benthic life and the sediment's organic content forms food supply to filter feeders. Therefore, the behavior of fine sediments often forms a central theme in assessing the impact of infrastructure and management strategies.
Operational rapid flood mapping : a pilot study in the Mekong area
Reliable and timely information is essential for appropriate flood management. This article describes a probabilistic method to assess flood extent from SAR data. It also addresses the derivation of flood levels and flood depth based on probabilistic flood extents and SRTM. The methods are tested on multiple incidence angle Envisat ASAR images.
Operational satellite based flood mapping using the Delft-FEWS system
Reliable and timely information is essential for appropriate flood management. This article describes a probabilistic method to assess flood extent from SAR data. The article also addresses the derivation of flood levels and flood depth based on probabilistic flood extents and SRTM. The methods are tested on Envisat ASAR images in a hydrological open standard IT platform (Delft-FEWS).
Toxicity profiling : an integrated effect-based tool for site-specific sediment quality assessment
The present work explores the applicability of in vitro toxicity profiles as aneffect-based tool for sediment quality assessment. For this purpose, a previously published dataset was used, in which sedimentextracts from 15 different locations in the Rhine-Meuse estuary were tested in 5 different bioassays. Three useful approachescould be distinguished for applying toxicity profiles in sediment quality assessment.
Using biological effect tools to define good environmental status under the European Union Marine Strategy Framework Directive : viewpoint
MICORE : dune erosion and overwash model validation with data from nine European field studies
This paper presents the first results of beach profile hindcasting with XBeach using recently measured coastal dataacquired under storm conditions at eight European sites, including a comparison to model results obtained with off-the-shelf models.
Real-time forecasting of morphological storm impacts : a case study in the Netherlands
Recent events like the Sumatra tsunami and Hurricane Katrina have reminded the world of the vulnerability of coastal areas to extreme events. Despite hydraulic engineering measures to minimize failure probability of coastal defence structures, a probability of failure, albeit small, remains. To assist local authorities and the population in their response to extreme events, timely access to relevant information of sufficient accuracy regarding impending natural threats is crucial. Current real-time systems do not include all relevant physics (e.g. morphodynamic response). This paper describes the efforts in the framework of the MICORE project to develop such an improved real-time system for the prediction of storm impacts. This paper addresses the proposed system architecture and some preliminary results. Also the paper addresses some aspects of the development environment that may be of more general interest than to this project alone.
The article presents a number of troublesome issues that can be found in the source code of a program. While it focuses on Fortran 90/95, the issues are similar for other programming languages.