PURSUIT SURVEY OF SNOWFALL PROCESS IN REGIONAL SCALE DUE TO CHEMICAL APPROACH

Abstract

 Target of the study is development of verification database to estimate regional spatial-temporal snow variation(snowfall process and deposited snow environment) due to chemical approach. We tried to research snow-fall process using compared with stable isotope and ion composition in Agano basin(From 2014 to 2016). As results, Agano basin is ruled by a snowfall of the Japan sea side origin. However, the part round border area of Agano basin(From south esast to east) occurs to snowfall of pacific ocean side derivation and regional peculiar water circulation to effect south side low pressure.