Japan Geoscience Union Meeting 2014

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Oral

Symbol A (Atmospheric, Ocean, and Environmental Sciences) » A-HW Hydrology & Water Environment

[A-HW27_1AM2] Hydrological Cycle and Water Environment

Thu. May 1, 2014 11:00 AM - 12:15 PM 424 (4F)

Convener:*Takeshi Hayashi(Faculty of Education and Human Studies, Akita University), Youhei Uchida(Geological Survey of Japan, AIST), Atsushi Higuchi(Center for Environmental Remote Sensing (CEReS), Chiba University, Japan), Seiya Nagao(Institute of Nature and Environmental Technology, Kanazawa University), Chair:Takeshi Hayashi(Faculty of Education and Human Studies, Akita University), Youhei Uchida(Geological Survey of Japan, AIST), Atsushi Higuchi(Center for Environmental Remote Sensing (CEReS), Chiba University, Japan), Seiya Nagao(Institute of Nature and Environmental Technology, Kanazawa University)

11:30 AM - 11:45 AM

[AHW27-10] Effect of snow depth on hydrology of highland marshes - Analysis of PALSAR/ALOS data at Kiritappu, Sarobetsu and Oze -

Masatoshi IGARASHI1, Yasuhiro HISADA1, Hirohide DEMURA1, *Yoshiko OGAWA1, Shinichi SOBUE1 (1.Univ. of Aizu)

Keywords:highland marsh, hydrology, PALSAR, remote sensing, snow, peat

It is basically very difficult to monitor the hydrological environment of highland marsh with snow in winter. We lastly reported that the most famous highland marshes Oze keeps a largest amount of liquid water body under the thick snow layer (more than 2 m) in midwinter based on our analysis of PALSAR/ALOS data, a kind of L-band radar. We concluded that such liquid water would be squeezed out from peat layers by the load of heavy snow and not the meltwater. In this presentation, we show our new analysis results at Kiritappu and Sarobetsu, both of which are highland marshes locating in Hokkaido, where it snows a lot but not as much as Oze in winter. The PALSAR/ALOS data is used again. This time we find almost no liquid water body in midwinter and recognize the singularity of Oze. We try to evaluate the effect of snow depth, peat depth on hydrology of highland marshes in winter.