Determination of Sea Level Trends of the Marmara Sea from Satellite Altimetry and Tide Gauges Data (2010- 2019)


Erkoç M. H. , Doğan U.

12th Coastal Altimetry Workshop, Rome, Italy, 4 - 07 February 2020, pp.35

  • Publication Type: Conference Paper / Summary Text
  • City: Rome
  • Country: Italy
  • Page Numbers: pp.35

Abstract

Sea level is one of the most used indicators in regional and global climate change studies as it is affected by climate events. It also affected by tectonic motion, earthquake and local effects. In order to determine sea level, two main methods are used. The first one is tide gauge that is measure sea level relative to a ground benchmark as a datum. It can be also affected by vertical ground movements. The other is satellite altimetry that measures sea level relative to a geocentric reference and not affected by vertical land motions. The purpose of this study, to determine sea level changes from tide gauges and various satellite altimetry missions in the Marmara Sea. For this aim, relative sea level trends and tidal parameters have been estimated over period 2010-2019 by main tidal frequencies using least-squares harmonic estimation method from two tide gauge stations distributed in the Marmara sea operated by TUDES (Turkish National Sea Level Monitoring System). The Satellite altimetry mission data also have been used to estimate absolute sea level. The data have been obtained by AVISO, ESA-EO,Copernicus Open Access Hub data archive in the period of 2010-2019.Sea level trend and tidal parameters have been determined and compared with two method both the tide gauge station and satellite altimetry. And tidal parameter also compared to global models such as FES2004, FES2014, DTU10 and Tpxo 7.2