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ORIGINAL RESEARCH article

Front. Mar. Sci.
Sec. Ocean Observation
Volume 11 - 2024 | doi: 10.3389/fmars.2024.1412736

Regional Tidal Modelling at European Coast Using Tide Gauges and Satellite Altimetry

Provisionally accepted
Kutubuddin Ansari Kutubuddin Ansari 1*Janusz Walo Janusz Walo 1Kinga Wezka Kinga Wezka 1MERY BISWAS MERY BISWAS 2Soumyajit Mukherjee Soumyajit Mukherjee 3
  • 1 Warsaw University of Technology, Warsaw, Masovian, Poland
  • 2 Presidency University, Kolkata, West Bengal, India
  • 3 Indian Institute of Technology Bombay, Mumbai, Maharashtra, India

The final, formatted version of the article will be published soon.

    The study investigates sea-level measurements along the coastal area of Europe for the sixty-year time span. Linear and quadratic modeling of tide-gauge measurements showed an almost positive rate of trend of sea-level rise (0.09 to 3.6 mm yr -1 ) and low acceleration (-0.05 to 0.40 mm yr - 2 ). A least squares harmonic estimation tidal modeling is carried out to estimate frequency (cycles per day) for a certain period. The smaller and higher tidal frequencies of these stations indicate their stability in terms of their surface variation. We used the 1993-2020 satellite altimetry data from the nearest grid points of the tide gauge station. The correlation coefficient between observed and satellite altimetry (lowest 0.53 and highest 0.93) varies at each station. This happens because of many factors that can affect the large difference in sea level trend between the satellite-derived and the tide gauge results. Finally, to implement a global reference system for physical heights, the offshore topographic slope direction, and slope range with contour spacing from the sea to the associated coastline have been analyzed by using Bathymetry data. The abrupt change of slope from the coastline towards the Sea can be seen towards the east, west, and southeast on the European coast. This is also an important factor that affects the variation of sea level.

    Keywords: European coast, Tide gauge, satellite altimetry, Harmonic analysis (HA), Bathymetry data

    Received: 05 Apr 2024; Accepted: 12 Jul 2024.

    Copyright: © 2024 Ansari, Walo, Wezka, BISWAS and Mukherjee. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Kutubuddin Ansari, Warsaw University of Technology, Warsaw, 00-661, Masovian, Poland

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