NEAR REAL‐TIME MAPPING OF THE 1975 MISSISSIPPI RIVER FLOOD IN LOUISIANA USING LANDSAT IMAGERY1
作者:
Eddie L. Schwertz,
Bradley E. Spicer,
Henry T. Svehlak,
期刊:
JAWRA Journal of the American Water Resources Association
(WILEY Available online 1977)
卷期:
Volume 13,
issue 1
页码: 107-115
ISSN:1093-474X
年代: 1977
DOI:10.1111/j.1752-1688.1977.tb01994.x
出版商: Blackwell Publishing Ltd
关键词: flood mapping;land use maps;Landsat imagery;flood damage assessment
数据来源: WILEY
摘要:
ABSTRACT:The project described in this report was undertaken by the Louisiana State Planning Office to establish the extent of backwater flooding in Louisiana in April 1975. Band 7 Landsat imagery, enlarged to a scale of 1:250,000 was used to visually identify flooded areas. Inundated areas were delineated on overlays keyed to 1:250,000 U.S. Geological Survey topographic quadrangles. Tabular data identifying acres flooded, according to land use type, were derived by merging the flood map overlays with computerized 1972 land use data. Approximately 1.12 million acres of the state were inundated by flood waters. The total acreage and land use types affected by flooding were determined within 72 hours from the time the flood areas were imaged. Flooded maps were prepared for 26 parishes. Field observations were made by Louisiana Cooperative Extension Service county agents in order to determine the accuracy of parish flood maps and flood acreage figures by land use type. Results indicated that this was a fast, accurate, and relatively inexpensive method of compiling flood data for disaster planning and postflood analysis.
点击下载:
PDF
(696KB)
返 回