• Development of Mathematical Model for Both Solute Transport in Snow and Isotopic Evolution of Snowmelt
  • Lee, Jeonghoon;
  • Dept. of Earth Sciences, Dartmouth College;
  • 눈 속에서의 용질이동 및 융설의 동위원소변동에 관한 모델개발
  • 이정훈;
  • 다트머스대학 지구과학과;
Abstract
Chemical and isotopic variations of snowmelt provide important clues for understanding snowmelt processes and the timing and contribution of snowmelt to catchment or watershed in spring. The newly developed model includes a hydraulic exchange between mobile and immobile water (${\omega}$), and isotopic exchanges between both mobile water and ice ($f_1$) and immobile water and ice ($f_2$). Since the new model is based on the mobile-immobile water conceptualization, which is widely used for describing chemical tracer transport in snow, it allows simultaneous calculations of chemical as well as isotopic variations in snowpack discharge. We compare the model results with a study of solute transport and isotopic evolution of snowmelt in snow, using artificial rain-on-snow experiments with conservative anion ($Br^-$). These observations are used to test the newly developed model and to better understand physical processes in a seasonal snowpack where our model simulates the chemical and isotopic variations.

Keywords: Snowmelt;Solute transport;Isotopic evolution of snowmelt;Mobile-imobile water model;

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This Article

  • 2012; 17(5): 31-39

    Published on Oct 31, 2012

  • 10.7857/JSGE.2012.17.5.031
  • Received on Jul 1, 2012
  • Revised on Oct 23, 2012
  • Accepted on Oct 25, 2012