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| Titel |
Spatio-temporal interpolation of gaps in time series |
| VerfasserIn |
Gregor Laaha, Jon O. Skøien |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250045056
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| Zusammenfassung |
| Calculation of characteristic flows or design values are usually based on permanent streamflow records on a continuous or daily-mean basis. In case of failure of the measurement device hydrograph time series may exhibit erroneous values or gaps, which may be estimated from at-site and regional information in order to achieve the full time series. This paper proposes a space-time geostatistical method for interpolating low flow time series. The method is based on space-time cross-covariances between the subject time series and nearby, similar time series. We use a cross-validation approach based on hypothetical gaps. It is shown how the method performs for gaps of various length for a set of long-term time series in the Austrian province Burgenland. |
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