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Articles

1988: Vol. LXV No. 1

Spurious Long-Period Tides Due to Tide Gauge Errors

Submitted
July 31, 2015
Published
2015-05-13

Abstract

A combination of tide height errors, and resetting the gauge height to a staff reading at a fixed hour each day, can lead to spurious long-period signals in series of hourly tide heights. These signals can be of the same order as the fortnightly tides. The problem is discussed in relation to the tides at Sydney (Australia), where it is believed to be responsible for an anomalous Msf tide of amplitude 0.5 cm.