The contamination range estimate method development of the non measurement seashore area

We accomplished the contamination range chart by intention decision tree algorithm which is one of among the data mining technique. The intention decision tree algorithm has been applied to the contamination relation numerical formula based on the variable as a topography factor (elevation, inclination, land use), rainfall of the relevant date. In order to establish a variable, we have used the equivalent salt deposit density (ESDD) for two years. The ESDD value has been measured every month from jan, 2005 to dec, 2006 in Korea seashore area 112 places. The contamination range of the non measure seashore area could be estimated by a previous measured variable (geomorphic factor, rainfall), ESDD and we have drew the contamination range map composed to 1 km² unit within 20 km from the all seashore area in Korea.