5:15 PM - 6:30 PM
[HTT23-P13] Estimation of snow water equivalent by satellite images in Hokkaido
Keywords:Remote Sensing, snow water equivalent
This study aims to estimate the snow water equivalent through the amount of snowmelt in Hokkaido using satellite images in the range of visible and inferred, as the first step of area estimation of the amount of snowfall.
First, we have researched the correlation between the river inflow to Chubetsu Dam in Northern Hokkaido and the seasonal change of the average brightness of Landsat-8 images. We found that the both have a strong correlation. The river's basin was calculated from topographic maps and Digital Elevation Model (DEM). The area of basin is 230.5km2, which is ~3.5% error compared to the officially announced at 238.9km2. Since clouds and vegetation in the area make the amount of snowfall unclear, we discussed the influence.