Toshio Yasuda
A study of snowmelt characteristic using the time-series snow-cover images
Atsushi RIKIMARU, Kazuyoshi TAKAHASHI
The snow is a factor to cause the disaster, and it has the dual nature that it is a valuable water resource. Moreover, Yukigata has been used as a natural calendar and a farming calendar assumed to be beginning the farming affair and an index of the harvest from of old.
The time series ground snowfall observation image was acquired in setting up the ground fixed point camera that was able to be observed even because of a little bad weather, and observing it continuously in the present study.
The relation between Yukisiritu and total degree was associated from the affiliated ground snowfall observation image at that time and the snow melting characteristic was understood.Here, it doesn't contain the place where the snow is not seen under the tree, and the snowfall area seen from the observation point is made Yukisiritu.
The area was set Altitude level.
It has been understood to change Yukisiritu a decrease Altitude level.
Next, it compared it with the time series ground snowfall observation image in 2006. The area was set to the same part.
When 2008 year was same Yukisiritu, the value of a low total degree was indicated.The time series ground snowfall observation image was enabled to be pursued as Yukisiritu decrease characteristic.
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