Web-mapping is a growing and popular use of GIS but creating even a simple map is often a non-trivial and costly task. One potential solution to this problem is Scalable Vector Graphics (SVG), an XML based 2D graphics standard. SVG offers rich client-side interactivity and unrivalled graphical quality, without the need for an expensive mapping/applications server. We introduce SVG technology an...

Soil erosion by wind is a serious problem in many parts of Europe and leads to degradation of the resource soil. In order to achieve sustainable land use, tools to identify problem areas and to evaluate environmental sound management practices are needed and necessary. Until now no wind erosion measurements have been carried out in Austria. For the fist time assessment of soil erosion by wind h...

We analyze the spatial relationship of relocated aftershocks to the principal rupture planes of the Mw 7.3 1992 Landers mainshock from a structural point of view. We find that the aftershocks constitute primarily a several-kilometer-wide damage zone centered on the mainshock rupture planes. The intensity of damage decreases away from the principal faults. Less than half of the aftershocks occur...

Abstract A significant deficiency of most computer models used for stream floodplain analysis is that the locations of structures impacted by floodwaters, such as bridges, roads, and buildings, cannot be effectively compared to the floodplain location. This research presents a straightforward approach for processing output of the HEC-RAS hydraulic model, to enable two- and three dimensional f...

To identify the primary and derived geological factors determining spread activation of landslides within Zakarpatska Oblast, a database 2.575 were collected integrated into GIS, with total area 385.21 km2 covered. Using ArcView Spatial Analyst environment, landslide formation represented by constructed grids relief, its derivatives, density structural-tectonic heterogeneities have been examine...

Measurements of porosity and pore size distribution provide important data on the physical properties of soils. This paper presents a digital image method for the analysis of soil pores. In the analysis of soil thin sections, the image threshold separating pore space from the surrounding solid, as well as the capillary pore size threshold separating air pores and capillary pores, was obtained b...

The integration of environmental models and Geographical Information Systems (GIS) usually takes two approaches: loose coupling and tight coupling. This paper, however, presents a full coupling approach within a GIS environment that is achieved by developing the existing hydrological models with the macro language of GIS. Such an approach makes it easy to capitalize on the GIS visualization and...

The authors present an integrated GIS tool, Accessibility Analyst, for accessibility analysis in urban transportation planning, built as an extension to the desktop GIS software package, ArcView. Accessibility Analyst incorporates a number of accessibility measures, ranging from catchment profile analysis to cumulative-opportunity measures, gravity-type measures, and utility-based measures, con...

Optimum allocation of water for restoration Iraqi marshes is essential different related authorities. Abo-Ziriq marsh area about 120 km2 situated 40 km east Al-Nassryia city. After comparing the measured annual qualities with standards surface quality evaluation, was in acceptable limit. Hydro balance computation were done each month by using interface among HEC-RAS, HEC-GeoRAS and ArcView GIS ...