The Sandstorm Information Of Xinjiang Based On MODIS Data Is Drawn And Studied With The Ocological Effect Of Dust And Sand Weather

The sandstorm is a kind of disaster weather easily takes placed in springin the north of our country. Because the sandstorm bane society result invery bigness, would generally affect the society's production, life seriously,can sometimes and even endanger the life, and caused therefore and in recentyears more and more of extensive concern. Xinjiang locates in our country'snorthwest side, is the cold air come to enter the main passage of China. Plusthe plentiful ness sand dust material of the Xinjiang. Become the influenceour country the sandstorm resource of northern and big and part of regionsthe one of the grounds. Therefore research Xinjiang sandstorm, and not onlyrelate to Xinjiang's social development with the ecosystem environmentdevelopments, still relate to in the social development of the downstreamregion with environment developments. Therefore, the urgent demandresearch Xinjiang sandstorm did deeply into completely.After the sandstorm occurrence influence the scope is generally and alland very big, and the strong sandstorm process can stride over the scope ofthe area of a few provinces within a day. And keep on time short, the generalsandstorm process is all keep on a few hours, or a couple of days. Like thisand only rely on the dispersion's ground weather or environment whatobservation post order to prognosticate the data very difficult completelyunderstand the sandstorm's information. The wide person of Xinjiang groundis sparse, and various what observation post order distribute very sparse, anddistribute the asymmetry, and particularly is the material's area in the sanddust the more rare observation post point distributed. Can't on time thesandstorm information that offering is completely that sandstorminformation; this gave research Xinjiang to bring very big difficulty. Theremote sense to be used as a kind of validity to prognosticate the space thebig dimensions scope the means that change, and have already and alsobecome to withdraw the important data source of the relevant sandstorminformation. But current demand for wave band for the remote sense forusing feeling the data including little, space distinguishing the low lack ofrate with satisfying the research of. New generation MODIS the data,available wave band is many, and the space distinguish the rate opposite andhigher. This text make use of this kind of data, first the right differentresearcher bring upped the different and false color to strengthen theclassification's wave band the combination to proceeds the verification, andadopted the OIF index number the method to unite with worth method ofVariance matrix characteristic of Variance —correlations Variance andchoose the best wave band the combination to increase to identifying of sanddust ability. The next in order, pass to withdraw the spectrum characteristicof the wave band on behalf the worth method to look for fit learn the...