Digital information technologies, such as the Internet, mobile phones and social media, provide vast amounts of data for decision-making resource management. However, access to these well their associated software training materials, is not evenly distributed: since 1990s there has been concern about a "Digital Divide" between data-rich data-poor. We present an innovative metric evaluating international variations in digital data: Data Poverty Index (DPI). The DPI based on Internet speeds,...

Arid and semi-arid regions are susceptible to high levels of erosion. A rapid cost effective methodological erosion assessment for these is required describe monitor the processes that control This study uses remote sensing contribution several factors Topography, land use, vegetation density, soil properties climatic proxies used determine risk provide basic maps water conservation practices. hierarchical decision tree sum combine weight parameters controlling The assigned weights each...

The disaster management applications of geographical information systems and remote sensing are examined relative to the cycle, in pre-disaster, crisis post-disaster contexts. We focus on uses limitations free or low-cost data software. A wide range geospatial datasets currently freely available, from digital elevation models (DEMs) thematic maps, multispectral satellite imagery virtual globes, such as Bing Maps. Maps hazardous terrain vulnerable features can be derived sets shuttle radar...

Earth systems operate over very diverse spatial and temporal scales. It requires application of a wide range specialized technologies to measure model their interrelation. This study is focused on the estimation final calculation erosion rates based interactions climate factors with topography for whole Tibetan plateau, by means remote sensing data. The complex interrelationship among natural (precipitation, soil texture, topography, vegetation) human activities (cultivation management),...

We evaluate how information extracted from free remote sensing imagery, using low-cost image processing software and Geographic Information Systems (GIS) can assist with hazard vulnerability mapping aspects of disaster preparedness. Object-Based Image Analysis (OBIA) by means Freeware Open-Source Software (FOSS), in combination high-resolution virtual globe imagery (such as GoogleEarth BingMap) was assessed against results derived commercially available software. Preliminary findings study...

High topography and hardly accessible terrains make field studies on a large-scale cumbersome. An integrative approach, employing several remote sensing techniques combined with studies, as well experimental numeric simulations, provides tools for the understanding of coupled processes. New technologies have capability measuring physical parameters, such precipitation, land use, vegetation coverage, soil moisture, uplift an area-wide coverage high spatial resolution. These allow us to...

Earth's changing surface reflects a dynamic linkage between various internal and processes. The aim of this ongoing project is to quantify erosion based on morphology combined with climatological data (precipitation) in tectonically climatologically very active area. This study carried out as consequence good results previous works, using both: empirical deterministic approaches by means remote sensing data. First: the attempt, Revised Universal Soil Loss Equation (RUSLE) its ability operate...