Spatial Data and Geographical Information System

Abstract

Regional plannin g and drought preparedness require an array of disparate pieces of information that have to be analyzed, evaluated and incorporated in the planning process. As our understanding will be formed about the reported events, we need to analyze the total natural hazards anticipated for the region with reference to the existing and planned developments and also calculate alternatives of mitigation prior to evaluation of the impact of the alternatives based on the economic and financial feasibility method. Assessment of drought requires information on various aspects from different sources such as meteorological and telecommunication satellites and ground based measurements on the land-use, soil moisture content, crop condition and natural vegetation over a large area in addition to spatial distribution of human habitat, instant resource availability for sharing, infra-structure facility etc. Parameters which are used in drought and mode of input are shown in Table 7.1. This chapter highlights the information types that are required in drought vulnerability analysis and its spatial analysis us ing GIS.Table 7.1Information requirement for drought assessment and source