ASSESSMENT OF 13 YEARS OF SEA LEVEL VARIATIONS AT THE CASPIAN SEA USING SATELLITE ALTIMETRY OBSERVATIONS

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JAFARI A.A.F.; AZMOUDEH ARDALAN A.R.

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Journal: Journal of the Earth and Space Physics Year:2007 | Volume:33 | Issue:1 Page(s): 21-30

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Title

ASSESSMENT OF 13 YEARS OF SEA LEVEL VARIATIONS AT THE CASPIAN SEA USING SATELLITE ALTIMETRY OBSERVATIONS

Author(s)

JAFARI A.A.F. | AZMOUDEH ARDALAN A.R. | Issue Writer Certificate

Keywords

CASPIAN SEAQ2

SATELLITE ALTIMETRYQ3

TOPEX/POSEIDONQ3

JASONQ3

FOURIER ANALYSISQ3

SEA LEVEL VARIATIONSQ3

Abstract

The goal of this research is study of SEA LEVEL VARIATIONS of CASPIAN SEA. For this purpose the SATELLITE ALTIMETRY data of Topex/Posidon (T/P) and JASON-1, and coastal tide gauge observations at Anzali, Sdra, Noshahr harbors are used. The algorithmic steps of the research are as follows: (1) As the first step the data from T/P and JASON-1 satellites are collected and standard corrections are applied to the data. (2) The CASPIAN SEA is divided into cells and Sea level changes are studied within those cells. (3) The coastal tide gauge observations are analysis for periodic and non-periodic changes. (4) The same analysis as of step (3) is applied to the SATELLITE ALTIMETRY data for recognition of periodic and non-periodic changes of the CASPIAN SEA level. For the steps (3) and (4) Fourier transform and Least Squares Spectrum analyses were performed. An almost steady slope from Southwest towards Northeast is observed in terms of orthometric heights of the mean CASPIAN SEA level. (5) Dynamic height of mean CASPIAN SEA level is computed and it was found out that the observed slope most have non gravimetric origin. The potential information needed for the computation of dynamic height of mean CASPIAN SEA level was provided by EGM96 geopotential model after being transformed into ellipsoidal harmonic coefficients and applied in ellipsoidal harmonic expansion of Earth’s gravitational field. Finally the methodology applied in this research is offered to the users via a software, which allows the sea level variation study of CASPIAN SEA via SATELLITE ALTIMETRY observations.

Cites

CASPIAN SEA LEVEL TIME SERIES ANALYSIS USING SATELLITES ALTIMETRY DATA

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APA: Copy

JAFARI, A.A.F., & AZMOUDEH ARDALAN, A.R.. (2007). ASSESSMENT OF 13 YEARS OF SEA LEVEL VARIATIONS AT THE CASPIAN SEA USING SATELLITE ALTIMETRY OBSERVATIONS. JOURNAL OF THE EARTH AND SPACE PHYSICS, 33(1), 21-30. SID. https://sid.ir/paper/80484/en

Vancouver: Copy

JAFARI A.A.F., AZMOUDEH ARDALAN A.R.. ASSESSMENT OF 13 YEARS OF SEA LEVEL VARIATIONS AT THE CASPIAN SEA USING SATELLITE ALTIMETRY OBSERVATIONS. JOURNAL OF THE EARTH AND SPACE PHYSICS[Internet]. 2007;33(1):21-30. Available from: https://sid.ir/paper/80484/en

IEEE: Copy

A.A.F. JAFARI, and A.R. AZMOUDEH ARDALAN, “ASSESSMENT OF 13 YEARS OF SEA LEVEL VARIATIONS AT THE CASPIAN SEA USING SATELLITE ALTIMETRY OBSERVATIONS,” JOURNAL OF THE EARTH AND SPACE PHYSICS, vol. 33, no. 1, pp. 21–30, 2007, [Online]. Available: https://sid.ir/paper/80484/en

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