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Our objective was to develop an interactive information and visualization framework for Floridas wetlands. We standardized and integrated 2,130 geo-referenced point observations of 78 different physical, chemical, and biological attributes collected in Florida's wetlands from 1987 to present. A Web-based GIS tool was created with ArcIMS to augment these point observations with other GIS layers ...

Department of Earth and Environmental Science Environmental Geochemistry Laboratory The University of Texas at San Antonio ________________________________________________________________________ Abstract Century-long disposal of sewage sludge in Mitchell Lake at San Antonio, Texas has resulted in hyper-eutrophic conditions and an excess accumulation of toxic metals in the lake system. To ident...

Over the past few decades GIS and statistical spatial data analysis tools have been successfully applied in the fields of meteorology, environmental monitoring, ecological analysis, and mineral exploration (to name but a few). While these synergistic tools operate on spatial data, as yet they have not been incorporated into a single 'user-friendly' software environment. For this reason statisti...

Probability maps are used to define areas with high and low certainty of exceeding a threshold value. The most popular methods for creating these maps are variants of indicator kriging. However, such methods are questionable when the data exhibit a trend or contain measurement errors, the latter of which is common in most data sets. This paper presents an alternative approach that maps the risk...

Remote sensing and GIS techniques were developed and evaluated to retrospectively analyze the impacts of the McNally Fire on air quality. The McNally Fire was a large wildfire over 54,700 ha (150,000 acres) in size that occurred in the Sequoia National Forest, California, 21 July through 26 August 2002. MODIS satellite images and NOAA pictures were used to digitize smoke plumes. Smoke plumes we...

Mozambique is a country located in the southwest of African continent. The has great climatic diversity. tropical monsoon (Am), savanna (Aw), hot semiarid (BSh), and humid subtropical (Cwa Cfa) highland (Cwb) climates stand out. regions classified have potential for rational exploitation low medium chill requirement peach trees. There are already technologies cultivation trees Brazil. objective...

There are numerous methods to classification of feature types. Imagine provides classification models in addition to texture features and convolution methods that assist in detecting various feature types. Using ESRI's ArcView and ArcGIS Feature Analyst extension, the process of feature extraction is readily accessible and user-friendly to the analyst. But, in general, road detection, specifica...