[HTT18-P03] Spatial variation in chemical soluble ions of the surface snow in the Tateyama Mountains in Toyama Japan
Keywords:Snow chemistry, Spatial variation
We collected the surface snows in Tateyama Mountains in April, May, June, July and August 2017 and measured the water stable isotopes and the concentrations of major ions (Cl-, NO3-, SO42-, Na+, NH4+, K+, Mg2+, Ca2+) of the samples. Based on the results, we created maps of their spatial variation using a GIS software.
The results show the concentration of Cl- was relatively higher in the area near the fumaroles in Jigoku valley during the study period. This is probably due to HCl contained in the volcanic gas emitted from the fumaroles. The concentrations of ions other than Cl- were generally higher in the southern area of the Murododaira in April. This suggests that the aerosols are mainly supplied from the Tateyama caldera located in south of the mountain. These spatial variations of soluble ions may affect vegetation and microbial activity in snow.