TITLE:
A Study on the Impact of Urban River Refurbishment to the Thermal Environment of Surrounding Residential Area
AUTHORS:
Daewuk Kim, Jae-Gyu Cha, Eung-Ho Jung
KEYWORDS:
Residential Area, Urban Heat Island, Urban Micro Climate, River Refurbishment, Thermal Environment
JOURNAL NAME:
Journal of Environmental Protection,
Vol.5 No.5,
April
25,
2014
ABSTRACT:
In this
study, a simulation was conducted targeting Beomeo stream of Daegu, for the
purpose of the quantitative determination of the changes in thermal environment
of surrounding residential areas according to the urban river refurbishment.
For the study method, the reviews of literature and model verification were
conducted, and then the results were derived through the process of comparing
and analyzing the thermal environment resulting from the river refurbishment of
the target area. As a result of the model verification, the accuracy of
modeling was 95%. As a result of a simulation of the target area, in respect of
the fluctuation of temperature, the temperature decreased by 1.33°C more in the
daytime than in the night time, due to the river refurbishment. In respect of
the positions, the decrease of the temperature was 1.33°C at 2 pm at position
1, the position of river refurbishment, and the highest in the entire time
slots. Also, the changes in temperature increasingly decreased from position 1
to position 4. It seemed that it was because there was the highest radiant heat
at position 1 with the biggest gap between artificial mulching and natural
mulching, and the effect of the gap in the radiant heat influenced successively
over position 2, 3 and 4. Lastly, in respect of the effect of river
refurbishment on the surrounding area, the effect reached to position 3, in
other word, 60 meters from the river.