TITLE:
The Time Series Spectral Analysis of Satellite Altimetry and Coastal Tide Gauges and Tide Modeling in the Coast of Caspian Sea
AUTHORS:
Mahmoud Pirooznia, Sayyed Rouhollah Emadi, Mehdi Najafi Alamdari
KEYWORDS:
Least Square Spectral Analysis, Harmonic Analysis, Altimetry Satellite, Coastal Tide Gauges
JOURNAL NAME:
Open Journal of Marine Science,
Vol.6 No.2,
April
15,
2016
ABSTRACT: This study endeavors to
deal with the least square spectral analysis on the time series, to find
present significant frequencies, to analyze 40 tide components using harmonic
methods and to show relationship between discovered frequencies and 40
components of tide. For the purpose of collecting data of altimetry satellites
of Topex/Poseidon (T/P), Jason 1, Jason 2 and coastal tide gauges of Bandar
Anzali, Noshahr, and Nekah were utilized. In this time series formed by cross
over points of altimetry satellite and then using least square spectral
analysis on time series derived from altimetry satellite and coastal tide
gauges the significant components were found and annual, biannual, and monthly
components were discovered. Then, analysis of 40 tide components was conducted
using harmonic method to find the amplitude and phase. It represented that
solar annual (Sa) plays the most significant role on Caspian Sea corresponded
to the least square spectral analysis of the time series. The results shows
that the annual (Sa) and semi-annual Solar (Ssa) constituents on all of the
ports listed have the highest amplitude in comparison with the other
constituents which are respectively 16 cm, 18 cm and 15 cm for annual
constituent and 2.8 cm, 5.4 cm and 3.7 cm for semi-annual constituent.