Japan Geoscience Union Meeting 2014

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International Session (Oral)

Symbol A (Atmospheric, Ocean, and Environmental Sciences) » A-CG Complex & General

[A-CG06_29PM2] Satellite Earth Environment Observation

Tue. Apr 29, 2014 4:15 PM - 6:00 PM 315 (3F)

Convener:*Riko Oki(Japan Aerospace Exploration Agency), Yoshiaki Honda(Chiba University, Center for Environmental), Kenlo Nishida Nasahara(Institute of Agricultural and Forest Engineering, University of Tsukuba), Takashi Nakajima(Tokai University Department of Network and Computer Engineering, School of Information and Design Engineering), Taikan Oki(Institute of Industrial Science, The University of Tokyo), Yokota Tatsuya(Center for Global Environmental Research, National Institute for Environmental Studies), Yukari N. Takayabu(Atmosphere and Ocean Research Institute(AORI), The University of Tokyo), Hiroshi Murakami(Earth Observation Research Center, Japan Aerospace Exploration Agency), Hajime Okamoto(Research Institute for Applied Mechanics,Kyushu University), Chair:Hiroshi Murakami(Earth Observation Research Center, Japan Aerospace Exploration Agency), Kenlo Nasahara(Faculty of Life and Environmental Sciences, University of Tsukuba)

5:45 PM - 6:00 PM

[ACG06-P01_PG] Detection of regional extent of permafrost thawing and waterlog damage area in boreal forest in eastern Siberia during w

3-min talk in an oral session

*Yoshihiro IIJIMA1, Konomi ABE2, Hajime ISE2, Tadashi MASUZAWA2 (1.JAMSTEC, 2.Regional Environmental Planning Inc.)

Keywords:ALOS, permafrost, wet climate, boreal forest, degradation, eastern Siberia

Wet climate with largely increased in rainfall during summer and snow accumulation during winter had perennially continued since 2004 in eastern Siberia. Soil moisture in the active layer had been rapidly increased corresponding with thawing permafrost near the surface during following years. The perennially water-logged active layer furthermore exacerbated the boreal forest habitat, namely withered and dead forests widely extended in this region. In the present study, we have attempted to extract the region of degraded boreal (larch) forest based on the analysis of satellite data (ALOS-AVNIR2 and PALSAR) in the left and right banks of the central Lena River Basin near Yakutsk, along with expansion of the water-logged forest floor in relation to permafrost degradation.