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Application of Altimetry in Oceanographic Research
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Application of Altimetry in Oceanographic Research

A special issue of Journal of Marine Science and Engineering (ISSN 2077-1312). This special issue belongs to the section "Ocean Engineering".

Deadline for manuscript submissions: closed (31 August 2023) | Viewed by 2472

Special Issue Editor

Dr. Kamil Kowalczyk

E-Mail Website
Guest Editor
Department of Geoinformation and Cartography, Uniwersytet Warminsko-Mazurski w Olsztynie, Olsztyn, Poland
Interests: Prof. Dr. Kamil Kowalczyk conducts research in the field of modelling changes in the surface of the Earth's crust and the sea surface near the shore from geodetic data; he uses both terrestrial and satellite measurement data, levelling, gravimetric, altimetry, GNSS and radar interferometry; most of his research uses time series analyses; in his research, he determined several surface models of vertical movements of the Earth's crust in areas of Central and Eastern Europe; he determined changes in the level of the Baltic Sea along its southern coastline over the last 200 years of its history; he also analyzed the relationship between the vertical movements of the Earth's crust and changes in sea levels and surfaces around Europe, improving his method of combining hybrid data for geodynamic purposes; he is the co-author of a method of detecting the so-called jumps in time series

Special Issue Information

Dear Colleagues,

Altimetric measurements are classified as methods of satellite geodesy. These measurements can be applied for determining the topography of ocean waters, the geoid and the parameters of the Earth's gravitational field are determined. Altimetric data with high temporal resolution and can be used on a global scale; the results of these data can be analyzed regardless of the time of day or season. The continuity of altimetric data allows for the analysis of changes in the surfaces of the seas and oceans over time (waves), the study of ocean tides and sea currents, and changes in the thickness of the ice cover. The purpose of this Special Issue is to show the practical use of altimetric data in oceanographic research. Research may concern all geophysical phenomena that can be directly or indirectly developed from altimetry. This research area has not yet been explored. The verification of the obtained results with other measurement methods is welcome, as well as looking for relationships between the results from altimetry and phenomena, such as salinity, temperature, water pressure or seabed topography.

Dr. Kamil Kowalczyk
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Journal of Marine Science and Engineering is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • satellite altimetry
  • geoid
  • vertical crustal movements
  • altimetric time series
  • ocean tides
  • seabed topography
  • sea level changes
  • oceanography

Published Papers (2 papers)

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Research

18 pages, 6619 KiB  
Article
Improving the Accuracy of Seafloor Topography Inversion Based on a Variable Density and Topography Constraint Combined Modification Method
by Yongjin Sun, Wei Zheng, Zhaowei Li, Zhiquan Zhou and Xiaocong Zhou
J. Mar. Sci. Eng. 2023, 11(4), 853; https://doi.org/10.3390/jmse11040853 - 18 Apr 2023
Viewed by 963
Abstract
The use of satellite altimetry to recover marine gravity anomalies allows for the rapid acquisition of seafloor topography on a wide range of regional scales. Currently, the commonly used approaches for inverting seafloor topography have been focused on the linear correlation between gravity [...] Read more.
The use of satellite altimetry to recover marine gravity anomalies allows for the rapid acquisition of seafloor topography on a wide range of regional scales. Currently, the commonly used approaches for inverting seafloor topography have been focused on the linear correlation between gravity anomalies and seafloor topography and have disregarded the effect of density contrast between the crust and seawater on depth. Therefore, we proposed a variable density and topography constraint combined modification (VDTCCM) method by deriving Parker’s formula and the Bouguer plate formula by introducing variable density and topography factors. This method can effectively recover topography-related nonlinear terms of gravity anomalies. Subsequently, the seafloor topography of the South China Sea was estimated by applying the VDTCCM method and was defined as Seafloor topography one (ST1), and following, the accuracy was evaluated using shipborne sounding data (SSD). The results indicate that the ST1 model’s SSD-checked accuracy is 23.34% and 39.42% higher than the common international models of ETOPO1 and DTU10, respectively. Moreover, the ST1 model has advantages in mapping rugged areas, showing more detailed topographical features. Consequently, the VDTCCM method can provide beneficial references for the construction of seafloor topography models on a large regional scale using gravity anomalies recovered from satellite altimetry. Full article
(This article belongs to the Special Issue Application of Altimetry in Oceanographic Research)
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15 pages, 8903 KiB  
Article
Relationship of Satellite Altimetry Data, and Bathymetry Observations on the West Coast of Africa
by Katarzyna Pajak, Magdalena Idzikowska and Kamil Kowalczyk
J. Mar. Sci. Eng. 2023, 11(1), 149; https://doi.org/10.3390/jmse11010149 - 08 Jan 2023
Cited by 1 | Viewed by 1067
Abstract
The sea surface is variable in time and space; therefore, many researchers are currently interested in searching for dependencies and connections with the elements influencing this diversity, e.g., with the seabed topography. An important problem is combining or comparing models obtained based on [...] Read more.
The sea surface is variable in time and space; therefore, many researchers are currently interested in searching for dependencies and connections with the elements influencing this diversity, e.g., with the seabed topography. An important problem is combining or comparing models obtained based on different data sets with different accuracies and spatial resolutions. These studies are designed to discover the relationship that may exist between observations of the shape of the seabed and changes in sea level. The aim of this study is to investigate the relationship by checking the correlation between the observations from the point recording of satellite altimetry measurements and the bathymetric data. The object of research is the capital city of Gabon—Libreville, located on the west coast of Africa and three point in Las Palmas. The results present sea level, salinity, and potential temperature variations in selected points. The highest trends of sea level changes occur, at one point, in the open ocean (P6) and at coastal points (Libreville, P3, Pointe Noire). The study indicates that, from 1993 to 2020, the temperature trend at the assessed points is on average 0.018  ±  0.012 °C·year−1, while the average salinity trend is 0.008  ±  0.005 1e−3 year−1. The correlation coefficients for the sea water temperature trend and the sea water salinity trend—determined at 0.20 and 0.08—present a weak linear relationship. Correlation takes slightly higher values for elevation, which is determined at 0.38. Research shows that there is a relationship between satellite and bathymetric observations on the east coast of Africa; however, the strength of the correlation depends on the location. Full article
(This article belongs to the Special Issue Application of Altimetry in Oceanographic Research)
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