THRESHOLD TIME SERIES MODELING OF TWO ICELANDIC RIVERFLOW SYSTEMS1
- 1 August 1985
- journal article
- Published by Wiley in Jawra Journal of the American Water Resources Association
- Vol. 21 (4) , 651-662
- https://doi.org/10.1111/j.1752-1688.1985.tb05380.x
Abstract
This paper reports our experience in building time series models which connect the flows in two Icelandic rivers with the meteorological variables of precipitation and temperature. Two rivers with different hydrological characteristics were studied. In areas where precipitation may be either in the form of rain or snow linear models are inadequate to describe the relationship between the river and the meteorological variables. The methodology of threshold models recently developed seems to be well suited for taking into account the sharp difference in the relationship according to whether it is freezing or not. The possibility of identifying an alternative threshold variable is also explored.Keywords
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