Japan Geoscience Union Meeting 2014

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Oral

Symbol A (Atmospheric, Ocean, and Environmental Sciences) » A-CC Cryospheric Sciences & Cold District Environment

[A-CC31_29AM1] Glaciology

Tue. Apr 29, 2014 9:00 AM - 10:45 AM 312 (3F)

Convener:*Keisuke Suzuki(Department of Environmental Sciences, Faculty of Science, Shinshu University), Yuji Kodama(National Institute for Polar Research), Chair:Keisuke Suzuki(Department of Environmental Sciences, Faculty of Science, Shinshu University)

9:15 AM - 9:30 AM

[ACC31-02] Change for chemical compornent of rime ice in two decades

*Osamu NAGAFUCHI1, Kuriko YOKOTA2, Koyomi NAKAZAWA1, Naoko HISHIDA1, Keisuke IKEDA1 (1.the University of Shiga Prefecture, 2.Toyohashi University of Technology)

Rime-ice and snow samples were collected at mountainous sites in Kyushu Island, Japan during from 1991 to 2014, and both soluble and insoluble substances in the melted rime-ice were analyzed by ion chromatography, inductively coupled plasma-mass spectrometry (ICP/MS) and analytical electron microscopy, in order to find the change of composition ratio of atmospheric pollutants cause by East Asian region. Although N/S ratio in rime-ice ranged from 0.1 to 0.3 in 1990's, recent year this ratio increased about 1.0. This phenomenon indicates that the composition of atmospheric pollutants changed during two decades in Eat Asian Continent.