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RISS 인기검색어
- 검색키워드
- 저자 : (Keinosuke Gotoh) (검색결과 6 건)
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Investigation of the coastal zone environment using remote sensing data acquired form landsat-5/TM
Byungdug Jun,Keinosuke Gotoh,In-Tae Yang 江原大學校 附設 環境硏究所 1992 環境硏究 Vol.9 No.-
Application of remote sensing techniques to study the environment investigation of Omura Bay. Nagasaki Prefecture, Japan and vicinity of Ulsan harbor, Korea are described. Remote sensing of transparency / sea surface temperature(SST) / water depth and its application to the mapping of three dimension using personal computer from Landsat-5/TM sensors data is discussed. After an introduction to the image processing related to above-said theme involved, the method to decrease error (instrumentation error of satellite sensors and so on) for the investigation of transparency, SST and water depth using Landsat-5/TM data are indicated. These methods are yielded a root mean square (r.m.s) error of 0.21m, 0.49? and 2.55m for transparency, SST and water depth in Omura Bay data, Nagasaki Prefecture, Japan respectively. The suggested model is applied to around Ulsan harbor area. Kyungsungnamdo, Korea.
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人工衛星 데이터를 이용한 솔잎혹파리와 산성우의 상관관계 분석
金應南,後薦惠之後薦惠之端,楊寅台 江原大學校 附設 環境硏究所 1998 環境硏究 Vol.15 No.-
솔잎혹파리에 의한 송림피해는 그 대상지역이 매우 넓고 지속적으로 증가하면서 위치를 옮겨가고 있다. 또한 송림피해는 약 7년이 경과하면 회복되는 것으로 보고되고 있으나 일부지역에서는 그대로 고사하고회생하지 못하고 있는데 이것은 산성우와 밀접한 관계가 있는 것으로 추측된다. 따라서 이 연구에서는1990년대에 들어서 강원도 지역 중에서도 송림고사 피해가 가장 심하게 발생 하고 있는 평창권을 대상으로 하여, 1984년과 1993년의 인공위성자료로부터 식물의 활 In this study, an attempt was done to analyze the damaged areas by pine gall midge in PYONGCHANG county by using the LANDSAT/TM data observed on Nov.12, 1984 and Oct.20. 1993. This county has suffered most serious damage in the forest areas caused by pine gall midge in KANGWON prefecture, KOREA. The method of Normalized Difference Vegetation Index is used to detect the damage situation for the passed 10 years. A normal recovery of the damaged areas was observed 7 years after the first damage has occurred. But, there was a lot of pines died and never resurrect again in some areas. The reason of this phenomenon may due mainly to the acid rain in that areas. Therefore the relationship between the damaged areas and the acid rain is considered in this study. As a result of this study the damage state and the distribution pattern of the damaged areas in PYONGCHANG county are clearly understood. The acid rain (pH less than 5.6)is observed on the whole KANGWON prefecture in the 1990's and also the Rainfall intensity of pH less than 5.0 is increased by 10 times in 1995 compared with rainfall intensity of the same pH observed in 1991
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A fundamental experiment on detecting corrosion of reinforced concrete structure by remote sensing
Yinming Chen,Keinosuke Gotoh 江原大學校 附設 環境硏究所 1992 環境硏究 Vol.9 No.-
The corrosion-induced deterioration of reinforced concrete structures is a pervasive, world-wide problem in all saltwater coastal regions. In many cases, the corrosions are hidden inside the reinforced concrete structures, making it impossible to observe corrosions by eye. The usual detecting method was by destructive testing or some non-destructive means, such as ultrasonic flaw detection. moreover, destructive testing weakens reinforced concrete structures. Ultrasonic detection has the drawback of being time-consuming when applied to detecting flaws in concrete structures. Ultimately, these testing methods are neither cost- nor time-effective. In order not to destroy the reinforced concrete structures we must quickly find the location of corrosion. During the past 23 years, research in reinforced concrete structures by the method of remote sensing with infrared thermography was been applied.1) Infrared thermography has been found capable of detecting corrosion because there is a difference in the surface temperature of sound and delaminated reinforced concrete structures under heated conditions. This article describes a fundamental experiment in detecting the cavities which are inside reinforced structures by remote sensing infrared thermography. Furthermore, the remote sensing method can detect vast areas in corrosion-reinforced concrete structures.
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リモトセソシソグ技術による大規模ゴミ処分場の維持·管理について
楊寅台,後藤惠之輔,全炳德 江原大學校 附設 環境硏究所 1997 環境硏究 Vol.14 No.-
Recently, due to the rapid progress of industry, pollution problems related to industrial and domestic waste had become a serious issue to be taken in consideration. In the past, domestic and industrial wastes were used to be thrown into the sea for the purpose of land reclamation. Nowadays, there are some procedures used in dealing with reducing the size of these wastes such as recycling and fill material in earth works. In Japan, the weight of domestic and industrial wastes collected in 1990 was about 200million tons. This huge amount was just much enough to construct the KANSAI International Airport. One can imagine how wide is the surface area needed for that purpose. This paper presents an investigation about Tsurumi Ryokuchi Park in Osaka City and the main wastes dumping site if Seoul City, Korea now. Satellite data were used here study the changes of temperature in landfil site with the passage of time. Using satellite data is believed to be a suitable method in monitoring the settlement and consolidation of the waste materials.
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