Determination of Mean Sea Level using coastal tide gauge and satellites altimetry data analysis Case study: Persian Gulf and Oman Sea

Mean sea level in various countries is calculated from spectral analysis of observations tide gauge which it has not enough precision. For the determination of mean sea level the instantaneous sea level heights observed by Topex/Poseidon and Jason-1 satellites during the years 1992 to 2008 (altimetry data) are used.In this research is assumed, the sea surface in addition to periodic tidal variations,changes in long-term exposure (approximately constant), and polar ice melting due to linear movement of tectonic plates. Also in this study The repetitive periodic coverage from satellite altimetry data to prepare time series covering the study area.Here For the modeling of mean sea level (MSL), all the periodic variations of lunisolar and polar tidal origins as well as the linear variations due to melting of icebergs, plate tectonics, and sea currents have to be modeled.This calculates is executed via least squares method for removing tidal variations.Due to long period data, All of known constituents in tidal potential such as M2,S2, K1, O1 … are considered. Mean sea level respect to reference ellipsoid WGS84 during 1992, 1997, 2000, and 2008 is defined.