Elena Huțanu, Andrei Urzică, L. Paveluc, C. Stoleriu, A. Grozavu
{"title":"利用landsat 7-etm +卫星影像与水利模型hec-ras对比分析洪涝地区。案例研究:吉家河，斯洛博齐亚-丁格尼河段","authors":"Elena HuÈ›anu, Andrei Urzică, L. Paveluc, C. Stoleriu, A. Grozavu","doi":"10.18509/gbp.2019.72","DOIUrl":null,"url":null,"abstract":"This study aims to make a comparison between flooded areas identified using the flood bands obtained with HEC-RAS hydraulic model, and the NDWI index resulted by processing Landsat 7-ETM+ satellite imagery. The study area was the upper sector of the Jijia River in Moldavian Plateau (North-Eastern Romania), affected by the July 2010 flood that was well caught in the satellite images. During that event the level of the Jijia River at Dingeni hydrometric station reached a value of 579 cm, far exceeding the level of flooding. Performing different flood simulations on the concerned river sector, a flooded area of 15.80 km has been revealed when applied the NDWI index, and a flooded area of 16.26 km when used the HEC-RAS hydraulic model. Following the field analysis, the values obtained with HEC-RAS are validated. The flooded area smaller by 0.46 km in the case of images Landsat 7-ETM+ could be explained by errors due to resolution or cloudiness.","PeriodicalId":9293,"journal":{"name":"BSAVA Congress Proceedings 2019","volume":"44 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2019-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"COMPARATIVE ANALYSIS OF FLOODED AREAS USING SATELLITE IMAGES LANDSAT 7-ETM+ AND HYDRAULIC MODEL HEC-RAS. CASE STUDY: THE JIJIA RIVER, SLOBOZIA-DINGENI SECTION\",\"authors\":\"Elena HuÈ›anu, Andrei Urzică, L. Paveluc, C. Stoleriu, A. Grozavu\",\"doi\":\"10.18509/gbp.2019.72\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This study aims to make a comparison between flooded areas identified using the flood bands obtained with HEC-RAS hydraulic model, and the NDWI index resulted by processing Landsat 7-ETM+ satellite imagery. The study area was the upper sector of the Jijia River in Moldavian Plateau (North-Eastern Romania), affected by the July 2010 flood that was well caught in the satellite images. During that event the level of the Jijia River at Dingeni hydrometric station reached a value of 579 cm, far exceeding the level of flooding. Performing different flood simulations on the concerned river sector, a flooded area of 15.80 km has been revealed when applied the NDWI index, and a flooded area of 16.26 km when used the HEC-RAS hydraulic model. Following the field analysis, the values obtained with HEC-RAS are validated. The flooded area smaller by 0.46 km in the case of images Landsat 7-ETM+ could be explained by errors due to resolution or cloudiness.\",\"PeriodicalId\":9293,\"journal\":{\"name\":\"BSAVA Congress Proceedings 2019\",\"volume\":\"44 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2019-08-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"BSAVA Congress Proceedings 2019\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.18509/gbp.2019.72\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"BSAVA Congress Proceedings 2019","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.18509/gbp.2019.72","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
COMPARATIVE ANALYSIS OF FLOODED AREAS USING SATELLITE IMAGES LANDSAT 7-ETM+ AND HYDRAULIC MODEL HEC-RAS. CASE STUDY: THE JIJIA RIVER, SLOBOZIA-DINGENI SECTION
This study aims to make a comparison between flooded areas identified using the flood bands obtained with HEC-RAS hydraulic model, and the NDWI index resulted by processing Landsat 7-ETM+ satellite imagery. The study area was the upper sector of the Jijia River in Moldavian Plateau (North-Eastern Romania), affected by the July 2010 flood that was well caught in the satellite images. During that event the level of the Jijia River at Dingeni hydrometric station reached a value of 579 cm, far exceeding the level of flooding. Performing different flood simulations on the concerned river sector, a flooded area of 15.80 km has been revealed when applied the NDWI index, and a flooded area of 16.26 km when used the HEC-RAS hydraulic model. Following the field analysis, the values obtained with HEC-RAS are validated. The flooded area smaller by 0.46 km in the case of images Landsat 7-ETM+ could be explained by errors due to resolution or cloudiness.
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