Gis Modeling For Dust Storm Example

Gis Modeling For Dust Storm Example Gis Modeling For Dust Storm â€" Essay Example > In the desert regions, desert storms are very rampant; some regions also call them desert storms especially in context with deserts like the Sahara, they are meteorological phenomenons very common in the arid and/or semi arid regions of the world. They may arise from gust fronts blowing the loose dust and/or sand from the dry surfaces. The particles may be transported through suspension in the air leading to soil erosion from the region of occurrence to deposition on the area where the particles land like the pacific which receives deposits from china's storms. The major leading causes of these storms are forces of wind passing over an area of particles loosely held thus increasing their vibrations and their leaping tendencies. Repeated striking of the ground by the particles leads to loosening of the minor particles of dust, thus they begin to voyage in suspension. When the wind's speed get to speeds causing the smallest of particles to be suspended in air, there is said to be a population mainly of dust grains that are moving in a vast assortment of mechanisms like; creeping, suspension and/or saltation. The other cause of the storms may be due to wind and drought or poor grazing and farming practices that make the soil to be to the wind. Some of the poor farming methods are like dry land farming practice (Zhang et al, 1997). The impacts of a dust storm both physical and environmentally are numerous; a dust storm is capable of moving a whole sand dune while they also cause poor visibility in areas of occurrence. Dust storms as per research have been discovered to lead to an increase to spread of disease globally. Spores of virus on the ground will be blown into the atmosphere plus the minute particles; this then leads to acrid rain and/or smog in the urban areas. To the economy, the storms may lead to soil erosion in the dry lands and preferentially remove the organic matter and nutrient rich particle covering the top soils; this is of major detriment to the agricultural sector as production is greatly reduced while crops planted are greatly damaged. Dust storms are not entirely destructive since they can have good results on the areas of deposition: Southern and Central American rain forests are known to get their main soil mineral nutrients from Sahara desert. While the poor iron oceans get their iron from these storms (Stephenson et al, 1980). Abstract Ksahara et al (2001), vast tracks within the Gobi desert of the Mongolian plateau are susceptible to dust storms, in these isolated regions remote sensing techniques are adequately necessary and the fact that GIS has such equipment, their technology comes in handy to the desert residents who can't visually predict a storm with their naked eyes except when the storm has already formed leaving them at a very disadvantaged position. Remote sensing techniques can thus help in prediction and measurement of dust storms, there is the MODIS satellite data, temperature channel satellite data â€" AVHRR all used to map sand storms within the desert regions of Northern China and Mongolia. Differences between the thermal bands are used together with the geographic information system to map the storms in studies carried out by (Fung, 1996). Results then clearly show that dust and sand storm maps can be got from massive bands for the monitoring of both sandstorms and/or dust storms. Introduction Geographic information systems/geographic information systems (GIS), can be termed as a system able to capture, store/sort, manage and then present the data in question to a linked location. The term also can be used to refer to information systems able to integrate, store, analyze, store, display and share data that it receives. In a generic sense, GIS applications can be said to be tools allowing users a chance to models of user-created searches, they are able to analyze any spatial information, edit maps, data, and/or present results of the operations. Geographic Information Science may be said to be the science underlying geographic applications, systems and concepts, they are taught as degree courses and/or GIS Certificate programs at several universities. GIS techniques and technology