Oral

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

[A-HW28_30AM2] Water and material transport and cycle in watersheds: from headwater to coastal area

Wed. Apr 30, 2014 11:00 AM - 12:45 PM 314 (3F)

Convener:*Kazuhisa Chikita(Department of Natural History Sciences, Faculty of Science, Hokkaido University), Tomohisa Irino(Faculty of Environmental Earth Science, Hokkaido University), Shin-ichi Onodera(Graduate School of Integrated and Arts Sciences, Hiroshima University), Shinji Nakaya(Department of Civil Engineering, Faculty of Engineering, Shinshu University), Masahiro Kobayashi(Forestry and Forest Products Research Institute), Mitsuyo Saito(Graduate School of Environmental and Life Science, Okayama University), Seiko Yoshikawa(Narional Institute of Agro-Environmental Sciences), Noboru Okuda(Center for Ecological Research, Kyoto University), Chair:Shinji Nakaya(Department of Civil Engineering, Faculty of Engineering, Shinshu University)

We focus on water and material transport and cycle in watersheds. The area includes headwater to coastal or estuarine area. We welcome these new topics in various scales and fields. For example, material transport in soil, slope and watershed scale, suspended material transport interacting with dissolved material, groundwater flow system and material transport, heterogeneity and dynamics, scale up from soil to watershed, effect of human activity and climate change for long period, N and P cycles, contaminant transport, river - groundwater interaction, new tracer methods, and sediment analysis etc.

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11:00 AM - 11:15 AM

[AHW28-08] The radioactivity of cesium in stream water during base flow from a small watershed in forested headwaters

*Yoshiki SHINOMIYA¹, Masahiro KOBAYASHI², Koji TAMAI², Yasuhiro OHNUKI², Yuko ITOH², Takanori SHIMIZU², Shin'ichi IIDA², Tatsuhiko NOBUHIRO³, Shinji SAWANO², Yoshio TSUBOYAMA², Toshihide HIRUTA⁴ (1.Tohoku Res. Ctr, For. and For. Prod. Res. Inst., 2.For. and For. Prod. Res. Inst., 3.Hokkaido Res. Ctr., For. and For. Prod. Res. Inst., 4.Fukushima Pref. For. Res. Ctr.)

11:15 AM - 11:30 AM

[AHW28-09] Contribution of suspended solids to the migration of radiocaesium in forests

*Masahiro KOBAYASHI¹, Yoshiki SHINOMIYA², Yasuhiro OHNUKI², Toshihide HIRUTA³ (1.Forestry and Forest Products Research Institute, 2.Tohoku Reseach Center, Forestry and Forest Products Research Institute, 3.Fukushima Prefectural Forestry Research Centre)

11:30 AM - 11:45 AM

[AHW28-10] Water and radiocesium balance in several paddy fields in Fukushima

*Seiko YOSHIKAWA¹, Sadao EGUCHI¹, Sunao ITAHASHI¹, Masato IGURA¹, Nobuharu KIHOU¹, Shigeto FUJIMURA², Takashi SAITO³, Hideshi FUJIHARA¹, Kazunori KOHYAMA¹, Noriko YAMAGUCHI¹, Satoru OHKOSHI³ (1.National Institute for Agro-environmental Sciences, 2.National Agriculture and Food Research Organization, 3.Fukushima Agricultural Technology Centre)

11:45 AM - 12:00 PM

[AHW28-11] The characteristics of sediment load from a coastal forested drainage basin and their agents (2)

*Kazuhisa CHIKITA¹, Wataru IWASAKA², Md motaleb HOSSAIN², Takuto MIYAMOTO² (1.Faculty of Science, Hokkaido University, 2.Graduate School of Science, Hokkaido University)

12:00 PM - 12:15 PM

[AHW28-12] Changes of mineral composition and load of suspended materials in the Saru River, Hokkaido before and after 2003

*Tomohisa IRINO¹, Satoshi NAKADA², Ken IKEHARA³, Youhei YAMASHITA¹, Osamu SEKI¹, Seiya NAGAO⁴ (1.Hokkaido University, 2.Kyoto University, 3.Institute of Geology and Geoinformation, National Institute of Advanced Industrial Science and Techn, 4.Kanazawa University)

12:15 PM - 12:30 PM

[AHW28-13] Estimation of Sediment discharge with distributed USLE and L-Q Equation in Water-Conservation Forest

*Ryoichiro NAKASHIMA¹, Kazunori TANJI¹, Masato OKAMURA² (1.Faculty of Environment and Information Studies Keio University, 2.Graduate school of Media and Governance Keio University)

12:30 PM - 12:45 PM

[AHW28-14] Sediment loading processes in a tectonic and forested catchment: field observations and modelling

*Md motaleb HOSSAIN¹, Kazuhisa CHIKITA², Takuto MIYAMOTO¹ (1.Graduate School of Science, Hokkaido University, 2.Faculty of Science, Hokkaido University)