Storm Surges in the North Sea during the Winter 1953-4

Details Storm Surges in the North Sea during the Winter 1953-4 Storm Surges in the North Sea during the Winter 1953-4

Apr 1956

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1956rspsa.235..260d&link_type=abstract

Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences, Volume 235, Issue 1201, pp. 260-274

Mathematics

Logic

7

Scientific paper

Records of sea level for several North Sea ports for the winter of 1953-4 have been investigated. They were split into 14-day intervals, and each 14-day record was Fourier-analyzed to determine if any non-astronomical periods were present. There was evidence of some activity between 40 and 50 h period, and a determination of the phase angles at different ports showed that the activity could be due to a disturbance travelling southwards from the north of the North Sea. The disturbance was partly reflected somewhere near the line from Lowestoft to Flushing, so that one part returned past Flushing and Esbjerg towards Bergen while the other part travelled towards Dover, and there was evidence of its existence on the sea-current records taken near St Margaret's Bay. These results were confirmed by subtracting the predicted astronomical tidal levels from the observed values of sea level and cross-correlating the residuals so obtained for each port with those found at Lowestoft. The residuals at Lowestoft and Aberdeen were compared with the meteorological conditions, and it was found that, although they could be attributed to a large extent to conditions within the North Sea, there was an additional effect due to a travelling surge which was of the same order of magnitude at both Lowestoft and Aberdeen and which was closely related to the rate of change with time of the atmospheric pressure difference between Wick and Bergen.

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