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IJMS Vol.32(1) [March 2003] >
|Title: ||Propagation of tides in the Cochin estuarine system, southwest coast of India|
|Authors: ||Srinivas, K.|
Maheswaran, P. A.
Asharaf, T. T. Mohamed
|Keywords: ||Sea level|
|Issue Date: ||Mar-2003 |
hourly data on sea level collected at four stations in the Cochin estuarine system has been made to
understand the tidal and non-tidal sea level variations inside the estuary, for
spring and neap phases during March 2000. Spring phase was dominated by
semi-diurnal tides whereas neap phase was dominated by diurnal tides. Diurnal
and semi-diurnal bands were together responsible for a high percentage of variance
of the observed sea level. The dominance of shallow water tides was seen with
increasing distance from the mouth. The sea level variance was dominated mainly
by tidal signals, but the tidal influence decreased rapidly inside the estuary.
Doodson’s Xo filter appears to be efficient for de-tiding the observed
sea level time series.
|Source:||IJMS Vol.32(1) [March 2003]|