Water-related Features Research Articles

The Water in the Royal Monastery of Santa Maria De Poblet, Tarragona, Spain

The history and water-related features in the Poblet Cistercian Monastery, located in Tarragona province, Spain are described. The study is undertaken with the main purpose of obtaining data for the establishment of an integrated water management system inside the walls of the abbey, which is suffering water scarcity due to increasing demands and the prevalent semiarid conditions.

Disorder in vitreous SiO2: The effect of thermal annealing on structural properties

SiO2-passivation layers formed by thermal oxidation and various chemical vapor deposition (CVD) processes have been investigated by infrared spectroscopy and wet chemical etching studies in ammonium hydroxide water solutions. In order to obtain effects of thermal annealing on the dislocation structure of deposited oxides, these layers have been subjected to an annealing step. Disorder and water-related features in infrared spectra, as compared to activation energies and etch rates received from the etching experiments, show mainly two effects: the annealing of deposited films is accompanied by bond strain relaxation through viscous flow and decreased porosity without a measurable decrease in thickness. Within the infrared study, further evidence was obtained for disorder-induced mechanical mode coupling in oxides with a dislocation structure. In addition, the infrared spectroscopic and etching results for thermally grown oxides are very similar to those for annealed CVD oxides. Such a similarity was also obtained for unmodified CVD oxides processed at two very different temperatures.

High-Resolution Landsat for Geophysical Studies: ABSTRACT

Landsat provides a tool which can significantly aid geophysical exploration programs. It can be used for End_Page 725------------------------------ planning the exploration programs, it can be a link which coordinates data from conventional sources, and it can be an interpretation tool in its own right. Landsat is currently used to map and plan data acquisition programs. It can be processed to provide accurate map quality displays and its continuous coverage makes it a prime source for current information in remote areas and on a worldwide basis. Feature extraction from the Landsat data helps identify and locate crops, forest, marsh, and other factors which affect operations cost. Data-processing techniques which permit the extraction of depth over coastal waters make this tool useful in marine-acquisition programs as well. Remote bathymetry is providing accurate up-to-date hydrographic information in many areas of the world. Cost savings from this application of Landsat can offset the cost of Landsat data processing. Frequently displayed at conventional map scales, the Landsat image itself becomes an excellent working document for compiling and integrating other sources of information. It provides the basis for confirming or questioning data quality and accuracy as they are completed. Landsat data can be processed to enhance the surface expressions of geologic features. This then aids the interpreter in the detection of faults, folds, lineaments, and other expression of subsurface geology. The data lends itself to independent geologic interpretation which can then be compared to interpretations made from gravity or seismic data. The spectral characteristics of the multi-spectral sensor data can be processed to extract information, to enhance edges, and to aid in the detection of lineaments which aids the structural interpretation of the area. Also, the data can be processed to enhance spectral differences which aid in identifying surface rock types. Water-related features can be enhanced to aid in analyzing drainage and drainage patterns. With false color imagery, Landsat data will aid in analyzing vegetation, cultural features, accent faults, folds, and other geologic structures. End_of_Article - Last_Page 726------------