Assessment of trends in hydrological extremes using regional magnification factors

نویسندگان

چکیده

Abstract Detection and attribution of trends in individual at-site series hydrological extremes is routinely undertaken using simple linear regression-based models. However, the available records are often too short to allow a consistent assessment across different stations region. The theoretical developments presented this paper propose new method for estimating regional regression slope parameter region, or pooling group, catchment considered hydrologically similar, where annual maximum events at sites cross-correlated. Assuming follow two-parameter log-normal distribution, Monte Carlo simulations demonstrate ability framework accurately identify slope, provide estimates with reduced sampling variability as compared equivalent estimates, thereby enhancing statistical power trend test. This regionally-based would clear characterization changes several Finally, applied national dataset peak flow from 662 gauging located United Kingdom. results show that significantly positive (p

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ژورنال

عنوان ژورنال: Advances in Water Resources

سال: 2021

ISSN: ['1872-9657', '0309-1708']

DOI: https://doi.org/10.1016/j.advwatres.2021.103852