Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Kosaka, Hiroshi; Saegusa, Hiromitsu; Kusano, Tomohiro; Yasue, Kenichi; Takeuchi, Ryuji; Tajikara, Masayoshi*; Onoe, Hironori*; Shiomi, Tetsuya*
no journal, ,
no abstracts in English
Onoe, Hironori*; Shiomi, Tetsuya*; Kusano, Tomohiro; Yasue, Kenichi; Kosaka, Hiroshi; Saegusa, Hiromitsu; Takeuchi, Ryuji; Tajikara, Masayoshi*
no journal, ,
To study the methodology for estimation of the influence of long-term topographic and climate change on deep groundwater flow condition, we estimated of paleo-topography and paleo-climate for past several hundred thousand years based on data from research and field investigations and built geological structured model that considered paleo-topography distribution in case of Gifu Tono area. As a result, we showed technique to restore paleo-topography distribution for three dimensions from fluvial terrace surface data dotted along a river in utilizing DEM data and GIS. In addition, we showed estimate method of climate of glacial epoch and quantity of cultivation of groundwater by near-surface hydrological observation data, pollen fossil analysis and expenditure calculation based on them. Furthermore, we built three-dimensional geological structured model that was base on carrying out groundwater flow analysis by utilizing bygones information.
Kusano, Tomohiro; Yasue, Kenichi; Kosaka, Hiroshi; Saegusa, Hiromitsu; Takeuchi, Ryuji; Onoe, Hironori*; Shiomi, Tetsuya*; Tajikara, Masayoshi*
no journal, ,
In this study, we focused on long-term topography change due to uplift, denudation and climate change with ice age and interglacial cycles of natural phenomena, to estimate influence to groundwater flow characteristics, we estimated paleo-topography and paleo-climate and operated groundwater flow simulation in Tono area. Based on terrace area distribution scattered along river, we estimated paleo-topography in three dimensions with DEM data and GIS. we estimated climate of glacial and interglacial age by near-surface hydrological observation data, pollen fossil analysis and expenditure calculation based on them. In hydraulics geological structure model with paleo-topography, we operated groundwater flow simulation on three-dimensional saturation and unsaturation in steady state. It is thought less effect on groundwater flow characteristics change in current terrain from middle terrace area formation. It is important to evaluate influence of groundwater flow characteristics if that form mountains or hills. Change in groundwater flow characteristics with change of recharge rate is limited to high-altitude area compared to ramifications of the mountains.
Onoe, Hironori*; Shiomi, Tetsuya*; Tokusu, Mitsuhiro*; Hirakawa, Yoshiaki*; Kusano, Tomohiro; Yasue, Kenichi; Kosaka, Hiroshi; Saegusa, Hiromitsu; Takeuchi, Ryuji; Nohara, Tsuyoshi; et al.
no journal, ,
no abstracts in English