استخدام البعد الرابع لتحديد التغير المكاني لمجرى نهر دجلة للفترة بين (1989 - 2009)

Abstract

AbstractThe search is deal with the changing of the Time which take place in past petiods. And which can be studied from the base of information or Geographical place at a time period.So that it was the study is completed the (4 dimention) as aone of base factors which appatent the changing of date time it was completed the study of changing the place of stream of Tigtis river through twenty years. It include 1989-2009.The reason was to reach for the difference of data and time between the years. In order to define the amount of importance of (4 dimention) in Geography Studing, because it take place the changing of time and place.And it determine the limit of deviate of the rivet from its main riverbed.