NON-STATIONARY POOLED FLOOD FREQUENCY ANALYSIS
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dc.contributor.author | Cunderlik J.M. | |
dc.contributor.author | Burn D.H. | |
dc.date.accessioned | 2022-01-23T03:37:38Z | |
dc.date.available | 2022-01-23T03:37:38Z | |
dc.date.issued | 2003 | |
dc.identifier | https://elibrary.ru/item.asp?id=1481990 | |
dc.identifier.citation | Journal of Hydrology, 2003, 276, 1-4, 210-223 | |
dc.identifier.issn | 0022-1694 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/34524 | |
dc.description.abstract | The presence of significant non-stationarity in a hydrologic time series cannot be ignored when estimating design values for future time horizons. This paper introduces a second-order non-stationary approach to pooled flood frequency analysis. The proposed approach separates the non-stationary pooled quantile function into a local time-dependent component, comprising the location and scale distribution parameters, and a regional component that can be regarded as time-independent under the assumption of second-order non-stationarity. A local trend analysis is used for identification, local significance assessment and estimation of the changes in the time-dependent components. A regional trend analysis based on a regional bootstrap-resampling algorithm is then applied for assessment of the changes at a regional scale. A Monte-Carlo experiment is used for evaluating the performance of the method in the estimation of trend magnitudes in the location and scale parameters of a non-stationary series. The model is then applied on a study catchment from a homogeneous region. The results show that ignoring even a weakly significant non-stationarity in the data series may seriously bias the quantile predicted for time horizons as near as 0-20 years in the future. | |
dc.subject | ANNUAL MAXIMUM FLOOD | |
dc.subject | NONSTATIONARITY | |
dc.subject | LOCAL AND REGIONAL TREND | |
dc.subject | MANN-KENDALL TEST | |
dc.subject | POOLED FLOOD FREQUENCY | |
dc.subject | L-MOMENTS | |
dc.title | NON-STATIONARY POOLED FLOOD FREQUENCY ANALYSIS | |
dc.type | Статья |
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