Sea Topography of the Ionian and Adriatic Seas Using Repeated GNSS Measurements
| Autor: | Sotiris Lycourghiotis |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Global Navigation Satellite System
lcsh:Hydraulic engineering 010504 meteorology & atmospheric sciences Geography Planning and Development Context (language use) Satellite system geoid coastal mapping Aquatic Science 010502 geochemistry & geophysics Precise Point Positioning 01 natural sciences Biochemistry Kinematic gps lcsh:Water supply for domestic and industrial purposes kinematic GPS lcsh:TC1-978 Geoid 0105 earth and related environmental sciences Water Science and Technology lcsh:TD201-500 GNSS Geodesy EGM96 GNSS applications 3d image ellipsoid Geology |
| Zdroj: | Water, Vol 13, Iss 812, p 812 (2021) Water Volume 13 Issue 6 |
| ISSN: | 2073-4441 |
| Popis: | The mean sea surface topography of the Ionian and Adriatic Seas has been determined. This was based on six-months of Global Navigation Satellite System (GNSS) measurements which were performed on the Ionian Queen (a ship). The measurements were analyzed following a double-path methodology based on differential GNSS (D-GNSS) and precise point positioning (PPP) analysis. Numerical filtering techniques, multi-parametric accuracy analysis and a new technique for removing the meteorological tide factors were also used. Results were compared with the EGM96 geoid model. The calculated differences ranged between 0 and 48 cm. The error of the results was estimated to fall within 3.31 cm. The 3D image of the marine topography in the region shows a nearly constant slope of 4 cm/km in the N–S direction. Thus, the effectiveness of the approach “repeated GNSS measurements on the same route of a ship” developed in the context of “GNSS methods on floating means” has been demonstrated. The application of this approach using systematic multi-track recordings on conventional liner ships is very promising, as it may open possibilities for widespread use of the methodology across the world. |
| Databáze: | OpenAIRE |
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