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  • 1
    Electronic Resource
    Electronic Resource
    REGIONALIZATION AND PREDICTION OF FLOODS IN THE FRASER RIVER CATCHMENT, B.C. (1984)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the American Water Resources Association 20 (1984), S. 0 
    Details
    ISSN: 1752-1688
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: Probability distributions that model the return periods of flood characteristics derived from partial duration series are proposed and tested in the Fraser River catchment of British Columbia. Theoretical distributions describing the magnitude, duration, frequency and timing of floods are found to provide a goof fit to the observed data. The five estimated parameters summarizing the flood characteristics of each basin are entered into a discriminant analysis procedure to establish flood regions. Three regions were identified, each displaying flood behavior closely related to the physical conditions of the catchment. Within each region, regression equations are obtained between parameter values and basin climatic and physiographic variables. These equations provide a satisfactory prediction of flood parameters and this allows the estimation of a comprehensive set of flood characteristics for areas with sparse hydrologic information.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1752-1688.1984.tb04803.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    PREDICTION OF MEAN ANNUAL FLOWS IN NORTH AND CENTRAL FLORIDA (1998)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the American Water Resources Association 34 (1998), S. 0 
    Details
    ISSN: 1752-1688
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: : A frequency analysis approach for the prediction of flow characteristics at ungaged locations is applied to a region of high annual precipitation and low topography in north and central Florida. Stationary time series of annual flows are fitted with the lognormal distribution and estimated parameters of the distribution are fitted by third order trend surfaces. These explain 65 and 74 percent of the observed variances in the mean and standard deviation, respectively. Predictions of parameters are then made for several locations previously unused in the study and they are used to estimate the return periods of various flows from the lognormal distribution. Application of the Kolmogorov-Smirnov goodness-of-fit test suggests that only one of the five test stations can be considered significantly different from the observed data, confirming the applicability of this technique.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1752-1688.1998.tb05967.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Modeling the effects of tropical cyclones on flooding in the Santa Fe river basin, Florida (1991)
    Springer
    GeoJournal 23 (1991), S. 361-373 
    Details
    ISSN: 1572-9893
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography
    Notes: Abstract Partial duration series flood analysis techniques are applied to 57 years of daily streamflow records on the Santa Fe river, Florida, in an effort to identify those floods resulting from the action of tropical cyclones and to compare their descriptive statistics to those of the other flood generating processes. Events of interest are identified by determining the basin's average response time and comparing the flood record to the area's history of tropical cyclone activity. Tropical cyclone-related floods are found to be less common than those caused by mid-latitude cyclones and to be of a larger magnitude and longer duration than floods caused by summer convective/frontal activity. The statistical properties of the models employed permit the representation of seasonally varying processes and facilitate extrapolation of findings to much rarer levels of flood definition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00193609
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Changes in Extreme Rainfall Events in South Africa (1999)
    Springer
    Climatic change 41 (1999), S. 249-257 
    Details
    ISSN: 1573-1480
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Extreme rainfall events can have severe impacts on society, so possible long-term changes in the intensity of extreme events are of concern. Testing for long-term changes in the intensity of extreme events is complicated by data inhomogeneities resulting from site and instrumentation changes. Using rainfall data from stations in South Africa that have not involved site relocations, but which have not been tested for inhomogeneities resulting from changes in instrumentation, a method of testing for changes in the intensity of extreme events is adopted. Significant increases in the intensity of extreme rainfall events between 1931–1960 and 1961–1990 are identified over about 70% of the country. The intensity of the 10-year high rainfall events has increased by over 10% over large areas of the country, except in parts of the north-east, north-west and in the winter rainfall region of the south-west. Percentage increases in the intensity of high rainfall events are largest for the most extreme events. While some inhomogeneities remain in the data used, the observed changes in the intensity of extreme rainfall events over South Africa are thought to be at least partly real.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1005450924499
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    Paper (German National Licenses)
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