ANALYSIS OF EFFECTS. AFTER TYPHOON 8115 
IN COASTAL AREA AND FIELDS IN HOKKAIDO, 
NORTHERN JAPAN, USING LANDSAT MSS DATA 
Shigetsugu UEHARA 
National Research Center for Disaster Prevention, 
Science and Technology Agency(STA) 
3-] Tennodai, Sakura-mura, Niihari-gun, 
Ibaraki-ken 300-12, Japan 
Kiyoshi TSUCHIYA 
Chiba University 
1-3 Yayoicho, Chiba-shi, Chiba-ken 280, 
Japan 
Yuichi YAMAURA & Kazuo TACHI 
Earth Observation Center(EOC), 
National Space Development Agency of Japan(NASDA) 
Ohashi, Hatoyama-mura, Hiki- -gun, 
Saitama-ken 350-03, Japan 
Abstract 
Based on Landsat MSS data taken consecutively after typhoon 8115 
which brought heavy rainfall over Hokkaido and subsequent flood, coast- 
al phenomena and feasibility of detecting flooded area were investigated 
assisted with areal photos taken immediately after the previous flood. 
It was found there exist fairly complicated meso-scale phenomena 
such as counter currents along the coast of eastern Hokkaido. In a 
small bay the existence of local circuration generated perhaps due to 
the effect of coastal shape and ocean current was observed also. 
Several experiments reveal that MSS band 4 and 5 imageries are 
effective to detect sea surface phenomena. 
Detecting flooded area in mid-eastern plain of Hokkaido was fairly 
difficult from the MSS imagery analysis. 
I. Introduction 
Recently the utilization of remotely sensed data by satellites 
has been increasing year by year and a lot of papers have been pub- 
lished in many countries including Japan. 
Tsuchiya, one of the authors, et al.[1] indicated examples of 
Sea surface phenomena around Japan revealed by airborne MSS, Land- 
sat MSS, Landsat RBV and Geostationary Geometrological Satellite of 
Japan (GMS) data. 
Regarding sea surface phenomena, Munday et al. [2] reported 
about the detection of oil slicks and oil spill by MSS and MSC. In 
1980, Ochiai reported the effectiveness of airborne MSS and Landsat 
RBV camera in the detection of oil slicks in coastal area in Japan 
[3]. As early as 1973, Pirie et al.[4] and Klemas et al.[5] stud- 
ied suspended substances and coastal processes based on Landsat MSS 
data. As to oceanic front, Mun and Gordon[6] carried out a fine 
Study based on Landsat MSS data, while Pierson et al.[7] made a 
good analysis based on Landsat MSS and SKYLAB EREP data. 
For the detection of expanding patterns of river effluents 
from the river, Tsuchiya et al.[8] reported a result of digital 
analysis around Ishikari Bay in Hokkaido based on Landsat MSS and 
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