title: Flooding patterns of the Okavango Wetland in Botswana between 1972 and 2000.
abstract: The inundated area of the Okavango Delta changes annually and interannually. The variability relates to regional precipitation over the catchment area in the Angolan highlands, and to local rainfall. The patterns of the wetland were captured using more than 3000 satellite images for the period 1972 to 2000, near daily NOAA AVHRR data for 1985-2000, and less frequent images of the Landsat sensors from 1972 onwards. One AVHRR image for every 10-day period was classified into land and water using an unsupervised classification method. Evaluation against Landsat TM and ERS2-ATSR data indicate an agreement of 89% for the size of estimated inundation area. Results show that the wetland area has varied between approximately 2450 km2 and 11400 km2 during the last 30 years.
authors.affiliation: Department of Land and Water Resources Engineering, Royal Institute of Technology, Stockholm, Sweden. jennymcc@kth.se
authors.forename: Jenny M
authors.initials: JM
authors.lastname: McCarthy
authors.forename: Thomas
authors.initials: T
authors.lastname: Gumbricht
authors.forename: Terence
authors.initials: T
authors.lastname: McCarthy
authors.forename: Philip
authors.initials: P
authors.lastname: Frost
authors.forename: Konrad
authors.initials: K
authors.lastname: Wessels
authors.forename: Frank
authors.initials: F
authors.lastname: Seidel
mesh_terms: D001902:Botswana; D004190:Disasters; D017753:Ecosystem; D004784:Environmental Monitoring; D045483:Rivers; D014881:Water Supply