Examination of the human sense on dirtiness and smell of water environment at the hori river, Nagoya city, japan

Makoto Takeda, YUHEI Yamada, NAOKI MATSUO

Thursday 2 july 2015

17:42 - 17:45h at Asia (level 0)

Themes: (T) Hydro-environment, (ST) Impacts of pollutants on the water environment, Poster pitches

Parallel session: Poster pitches: 13G. Environment - Impact

In order to examine a water environmental improvement, human sense data on the water environment is very important criteria. However, human sense on the water environment has not been discussed in detail. This study examined the feature of human sense on dirtiness, color and smell of the water environment and the relation between human sense data and physical behaviors which are tide, rain situation and seasonal change. The study area is the Hori River which flows at the center of Nagoya city. In this study, the human sense data of last 2007, 2008, 2009 and 2010 year from Horikawa Sennin Chosatai were treated. Horikawa Sennin Chosatai is a citizen group which is interested in water environment of the Hori River. These data were attributed to any surveyors who took a survey at the bridges of the Hori River and the data were the feeling of their sense i.e. they looked at the water condition at the bridge of the Hori River and gave their opinion towards the conditions of the river. From the analysis of these data, the time and area on the worst condition of dirtiness, color and smell were obtained. Moreover, the difference of human sense between dirtiness and smell was shown clearly. Finally, the human sense models were developed with the Hayashi's quantification methods. The validity of the models, the difference of analysis results between dirtiness and smell, and future subjects were shown by comparison forecasting human sense data and questioner results.