Landslide scar location is fundamental for the risk management process, e.g., it allows mitigation of these areas, decreasing the associated hazards for the population. Remote sensing data usage is an essential tool for landslide identification, mapping, and monitoring. Despite its potential use for landslide risk management, remote sensing usage does have a few drawbacks. The aforementioned ev...

Methods: Field data on sagebrush species and structural characteristics collected in 2005 were regressed against spectral values and transformed indices derived from Landsat TM data. Step-wise regression methods were used to build (1) a combinedmodel that ignored species and physical differences in sagebrush, and (2) four different models that took those differences in account. Parsimonious mod...

Spatially registered Landsat Thematic Mapper (TM) and SPOT (Systeme Pour I'Observation de la Terre) panchromatic images were merged by combining multiresolution wavelet decomposition components from each, and then reconstructing a merged image using the inverse wavelet transform. Three wavelet merging techniques were compared to the intensityhue-saturation merging technique. The comparison resu...

Juniper ; encroachment into shrub steppe and grassland systems is one of the most prominent changes occurring in rangelands of western North America. Most studies on juniper change are conducted over small areas, although encroachment is occurring across large regions. Development of image-based methods to assess juniper encroachment over large areas would facilitate rapid monitoring and identi...

The concern about water quality in inland water bodies such as lakes and reservoirs has been increasing. Owing to the complexity associated with field collection of water quality samples and subsequent laboratory analyses, scientists and researchers have employed remote sensing techniques for water quality information retrieval. Due to the limitations of linear regression methods, many research...

This study* evaluated computer-aided analysis techniques applied to Thematic Mapper Simulator (TMS) data for the purpose of mapping forest cover types. Specifically, classification results obtained using a supervised set of training statistics and various combinations of three and four channels subsets of the seven available TMS channels are compared for three classification algorithms: L2, GML...