Rainfall, soil moisture, increasing temperature and changes in vegetation cover are the most important parameters effecting drought. Therefore, analysis of vegetation fraction and soil spectral signature, especially in red and infra red bands, are essential in drought estimation using remote sensing. In this study, Modified Perpendicular Drought Index (MPDI), which uses Vegetation Fraction (VF)...

In situ infrared and visible-light ellipsometric investigations of boron nitride thin films at elevated temperatures situ infrared and visible-light ellipsometric investigations of boron nitride thin films at elevated temperatures" (1998). Faculty Publications from the Department of Electrical and Computer Engineering. 14. In situ infrared ͑IR͒ spectroscopy and visible-light ͑VIS͒ spectroscopic ell...

Timely harvest is critical to achieve maximum seed viability and vigour in agricultural production. However, little information exists concerning how to reap the best quality seeds of Leymus chinensis, which is the dominant and most promising grass species in the Songnen Grassland of Northern China. The objective of this study was to investigate and evaluate possible quality indices of the seed...

The geostatistical properties of soil moisture patterns from five different sites in Australia (Tarrawarra and Point Nepean) and New Zealand (three sites from the Mahurangi River Basin—Carran’s, Clayden’s and Satellite Station) are analysed here. The soil moisture data were collected using time domain reflectometry and consistent methods for all sites, thereby allowing comparisons to be drawn b...

The flammability of wildland vegetation is strongly dependent upon the moisture content of fine dead fuels. Consequently, assessing the moisture content of these fuels to within a reasonable degree of accuracy is an important part of wildland fire management. Estimates of fine fuel moisture content can also be combined with information on wind speed, vegetation type and drought effects to provi...

one of the methods of understanding and evaluating the irrigation management is to measure soil moisture, plant indices and vegetation temperature. the present study aims to introduce a traditional pattern of irrigation management (continuous water rotation in an irrigation zone) in the pistachio gardens of ardakan, and evaluate its strengths and weaknesses. a tdr device was used in a one-month...

This work aims to compare the performance of new methods to estimate the Soil Moisture Content (SMC) of bare soils from their spectral signatures in the reflective domain (0.4-2.5 µm) in comparison with widely used spectral indices like Normalized Soil Moisture Index (NSMI) and Water Index SOIL (WISOIL). Indeed, these reference spectral indices use wavelengths located in the water vapour absorp...

This research developed a numerical-hierarchical framework that captured surface conditions and climate parameters. Volume changes under distinct scenarios of boundary, antecedent moisture, meteorological parameters were predicted using coupled seepage-deformation model. Risk was hierarchically based on expert judgment for (Stage-I indices) normal distribution moisture atmospheric (Stage-II ind...

The use of data from multiple sensors is often required to ensure data coverage and continuity, but differences in the spectral characteristics of sensors result in spectral index values being different. This study investigates spectral response function effects on 48 spectral indices for cultivated grasslands using simulated data of 10 very high spatial resolution sensors, convolved from field...