Behavior of Ammonium Sulfate Applied to Snowcover and its Effects on Snow Meltwater

KAWAI Motonari, SIMODAIRA Yuki, TASE Norio

doi:10.4145/jahs.30.137

Bibliographic Information

Other Title

雪面に散布された硫酸アンモニウム（硫安）の挙動と散布による融雪水への影響
セツメンニサンプサレタリュウサンアンモニウムリュウアンノキョドウトサンプニヨルユウセツスイエノエイキョウ

Search this article

Description

<p>Ammonium sulfate is commonly applied on the snow surface of ski runs to maintain the snow condition for the Alpine events. The applied ammonium sulfate possibly causes acidification of soil, deterioration of vegetation and so on. However, discharge processes of the applied ammonium sulfate from snowpack are still unknown. In this study, the discharge characteristics of applied ammonium sulfate were investigated by collecting snow meltwater through a lysimeter (1m²) and measured pH, conductivity, NH₄⁺ concentration, SO₄^2- concentration and δ¹⁸O. The applied ammonium sulfate was discharged from the snowpack with little change in quality. In contrast, the snow meltwater was acidified a little bit because of nitrification after application. The applied ammonium sulfate was not absorbed into the snow particles but adsorbed on the surface of the snow particles. Most of ammonium sulfate was thus immediately discharged with snow meltwater. Flow of water in snowpack and the daily variation of snow meltwater quality were affected by the application of ammonium sulfate, because ammonium sulfate lowers the snow temperature and keeps the freezing condition.</p>

Journal

Journal of Japanese Association of Hydrological Sciences

Journal of Japanese Association of Hydrological Sciences 30 (4), 137-147, 2000

THE JAPANESE ASSOCIATION OF HYDOROLOGICAL SCIENCES

Keywords

Details 詳細情報について

Export