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Abstract
Desert creeping was used formally to describe desertification disaster. It is a major environmental problem, with adverse Socio-economic impact, particularly in the arid, semi arid and dry sub humid land of the world. It is ongoing greatest disaster out of 28 ones occur in Africa. The six most important ones in Africa are (Drought, Desertification, Conflicts, Epidemics, Locust infestation and Floods). In 1931 the great famine in sahelian zone of Africa caused by prolonged drought described as desertification disaster (Nur, 1992). FAO, UNDP, USAID, World Bank and other national and international organization continuously assist during onset and end results of this disaster without any effort at prevention phase. Several parts of many countries are out of production of renewable natural resources and added to desert areas annually. Desert creeping is slow onset disaster that people and government cannot feel it although they were suffering from different outcomes of it (Hunger, Famine, Conflict, and War) the end result is death. It is look like fatal disease disaster (HIV, AIDS and Malaria), the patients could not see the virus and parasite movement but they can feel the symptoms which consequently end with death. Experts said an ounce of prevention is better than cure for both deadly disasters. High need for systematic monitoring and assessment of desertification in Sudan was first addressed by Ayoub (1999) as first step of desert creeping disaster diagnosis .Since Sudan is wide country and the problem is huge periodic ground survey is impossible (considering financial constrain and civil war). Thus combination of satellite images and historical observation using Remote Sensing (RS) and Geographical Information System (GIS) could help in monitoring of this disaster. Extracted information will aid in establishment of early warning system for desert creeping in Sudan. Aim of this research was to track the movement of the desert boundary. Objectives of this research are to collect and connect small scale and sectoral work on desertification assessment to see the whole pictures of the temporal desert creeping disaster in Sudan. Since more valuable areas were engaged and encroach by desert annually. This could be achieved through monitoring of the historical movement of desert boundary using available satellite images and historical data. It is concluded that ongoing disaster affecting several parts of Sudan. Alt of efforts needed to combat this problem, several measures was recommended.
Keywords: Desertification, Disaster, Monitoring, Sudan.
