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Article

Analysis of the Dynamic Height Distribution at the Estuary of the Odra River Based on Gravimetric Measurements Acquired with the Use of a Light Survey Boat—A Case Study

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Faculty of Electronics, Telecommunications and Informatics, Gdańsk University of Technology, 80-233 Gdańsk, Poland
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Faculty of Navigation, Maritime University of Szczecin, 70-500 Szczecin, Poland
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Faculty of Civil and Environmental Engineering, Gdańsk University of Technology, 80-233 Gdańsk, Poland
*
Authors to whom correspondence should be addressed.
Sensors 2020, 20(21), 6044; https://doi.org/10.3390/s20216044
Received: 19 September 2020 / Revised: 14 October 2020 / Accepted: 21 October 2020 / Published: 23 October 2020
(This article belongs to the Special Issue Measurement Methods in the Operation of Ships and Offshore Facilities)
This article presents possible applications of a dynamic gravity meter (MGS-6, Micro-g LaCoste) for determining the dynamic height along the Odra River, in northwest Poland. The gravity measurement campaign described in this article was conducted on a small, hybrid-powered survey vessel (overall length: 9.5 m). We discuss a method for processing the results of gravimetric measurements performed on a mobile platform affected by strong external disturbances. Because measurement noise in most cases consists of signals caused by non-ideal observation conditions, careful attempts were made to analyze and eliminate the noise. Two different data processing strategies were implemented, one for a 20 Hz gravity data stream and another for a 1 Hz data stream. A comparison of the achieved results is presented. A height reference level, consistent for the entire estuary, is critical for the construction of a safe waterway system, including 3D navigation with the dynamic estimation of under-keel clearance on the Odra and other Polish rivers. The campaign was conducted in an area where the accuracy of measurements (levelling and gravimetric) is of key importance for shipping safety. The shores in the presented area of interest are swampy, so watercraft-based measurements are preferred. The method described in the article can be successfully applied to measurements in all near-zero-depth areas. View Full-Text
Keywords: gravity anomalies and earth structure; gravimetric river survey; geophysical river survey; Fourier analysis; numerical modelling; time-series analysis; Europe gravity anomalies and earth structure; gravimetric river survey; geophysical river survey; Fourier analysis; numerical modelling; time-series analysis; Europe
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MDPI and ACS Style

Pyrchla, K.; Tomczak, A.; Zaniewicz, G.; Pyrchla, J.; Kowalska, P. Analysis of the Dynamic Height Distribution at the Estuary of the Odra River Based on Gravimetric Measurements Acquired with the Use of a Light Survey Boat—A Case Study. Sensors 2020, 20, 6044. https://doi.org/10.3390/s20216044

AMA Style

Pyrchla K, Tomczak A, Zaniewicz G, Pyrchla J, Kowalska P. Analysis of the Dynamic Height Distribution at the Estuary of the Odra River Based on Gravimetric Measurements Acquired with the Use of a Light Survey Boat—A Case Study. Sensors. 2020; 20(21):6044. https://doi.org/10.3390/s20216044

Chicago/Turabian Style

Pyrchla, Krzysztof, Arkadiusz Tomczak, Grzegorz Zaniewicz, Jerzy Pyrchla, and Paulina Kowalska. 2020. "Analysis of the Dynamic Height Distribution at the Estuary of the Odra River Based on Gravimetric Measurements Acquired with the Use of a Light Survey Boat—A Case Study" Sensors 20, no. 21: 6044. https://doi.org/10.3390/s20216044

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