Geographical Information Systems (GIS) are becoming useful tools in making strategic decisions whenever data are found to have spatial distribution. Federal, state, and local governments are using GIS for assessment and planning in such areas as housing, healthcare, land use, natural resources, environmental monitoring and transportation. Companies are also using it to expand and consolidate ex...

The Gulf of Paria is a semi-enclosed shallow basin with increasing coastal development activities along Trinidad's west coast. Sediments present a host for trace metal pollutants from overlying waters, therefore determination of their content is critical in evaluating and detecting sources of marine pollution. This paper presents a Geographic Information System (GIS) analysis of geochemical ass...

In recent years, worldwide attention has shifted from point source to non-point source (NPS) pollutants, particularly with regard to the pollution of surface and subsurface sources of drinking water. This is due to the widespread occurrence and potential chronic health effects of NPS pollutants. The ubiquitous nature of NPS pollutants poses a complex technical problem. The area1 extent of their...

Urban flooding has become an increasingly important issue in many parts of the world. In this study, an integrated flood assessment model (IFAM) is presented for the coastal urban flood simulation. A web based GIS framework has been adopted to organize the spatial datasets for the study area considered and to run the model within this framework. The integrated flood model consists of a mass bal...

Population Viability Analysis (PVA) is a Monte Carlo simulation method for estimating the probability of extinction of threatened species. There has been a shift in the use of PVA from absolute species risk measurement to relative risk assessment associated with a ranking of management strategies. Furthermore, PVA models have sought to include more spatially explicit information, like habitat s...

This paper aims to explore the analysis of climate patterns embedded in the Global Climate Data Sets generated by the Community Climate System Model (CCSM) for the 4 Assessment Report of the Intergovernmental Report for Climate Change (IPCC). A Geographic Information Systems (GIS) approach is taken to examine spatiotemporal correlates among climate processes and to draw insights into their rela...