A Study of The Geoid and Marine Topography in Lagoons

• Autorzy: Lycourghiotis Sotiris , Paraskevi Crawford Elizabeth , Kariotou Foteini

Identyfikatory

DOI

10.29227/IM-2024-01-19

Warianty tytułu

PL

Badanie geoidy i topografii morskiej w lagunach

• Języki publikacji: EN

Abstrakty

EN

The study of geoid fluctuations in coastal areas is extremely important in understanding the changes in the extent of the Earth’s crust and also in the form of the mean sea surface topography (MSST). In recent years, the GNSS-on-boat method has made important steps towards the detailed description of marine topography, achieving precision to the order of a few centimeters, which is much more significant than has been achieved with the alternative satellite and altimetric methods. In this study, the method is applied for the first time in a lagoon, a challenging but exceptionally interesting environment both from a geophysical and hydrodynamic viewpoint. The ‘Papas’ lagoon in Western Achaia (Greece) was chosen for field measurements. The result for the geoid form shows a peak (13-15cm) in the marine topography approximately in the center of the lagoon. If this is confirmed in other lagoons or lakes, it will constitute a significant contribution to hydrocyanic dynamic models, which currently take as a basic assumption that the surface of the water is level. At the same time, the form of the SST indicates a significant reduction in gravity in the center of the lagoon, which may be linked either with a local reduction in the thickness-density of the Earth’s crust or with the existence of underground voids, faults or deposits.

Słowa kluczowe

EN

geoid; marine topography; lagoons; sea surface topography

PL

geoida; topografia morska; laguny; topografia powierzchni morza

• Wydawca: Polskie Towarzystwo Przeróbki Kopalin
• Czasopismo: Inżynieria Mineralna
• Rocznik: 2024
• Tom: Vol. 1, no. 1
• Strony: 181--185
• Opis fizyczny: Bibliogr. 15 poz., rys.

Twórcy

autor

Lycourghiotis Sotiris

• School of Science and Technology, Hellenic Open University, 18 Par. Aristotelous Str., 26335 Patras, Greece
• Department of Civil Engineering, University of Peloponnese, 1 M. Alexandrou Str., Koukouli,26334 Patras, Greece

• https://orcid.org/000-0002-0416-9757

autor

Paraskevi Crawford Elizabeth

• Department of Civil Engineering, University of Peloponnese, 1 M. Alexandrou Str., Koukouli,26334 Patras, Greece

autor

Kariotou Foteini

• School of Science and Technology, Hellenic Open University, 18 Par. Aristotelous Str., 26335 Patras, Greece

Bibliografia

• 1. Lycourghiotis, Sotiris, and Foteini Kariotou. "Τhe “GPS/GNSS on Boat” Technique for the Determination of the Sea Surface Topography and Geoid: A Critical Review." Coasts 2.4 (2022): 323-340.
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• 5. Rocken, C.; Johnson, J.; Van Hove, T.; Iwabuchi, T. Atmospheric water vapor and geoid measurements in the open ocean with GPS. Geophys. Res. Lett. 2005, 32, L12813.
• 6. Foster, J.H.; Carter, G.S.; Merrifield, M.A. Ship-based measurements of sea surface topography. Geophys. Res. Lett. 2009, 36, L11605.
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• 9. Lycourghiotis, S. Developing a GNSS-on-boat based technique to determine the shape of the sea surface. In Proceedings of the 7th International Conference on Experiments/Process/System/Modeling/Simulation/Optimization, Athens, Greece, 5–8 July 2017; Volume 1, pp. 113–119.
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• 15. Lycourghiotis, Sotiris, and Foteini Kariotou. "Τhe “GPS/GNSS on Boat” Technique for the Determination of the Sea Surface Topography and Geoid: A Critical Review." Coasts 2.4 (2022): 323-340.

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).