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Using GMT for 2D and 3D Modeling of the Ryukyu Trench Topography, Pacific Ocean

Polina Lemenkova

Polina Lemenkova

  • College of Marine Geo-sciences, Ocean University of ChinaQingdao, People’ Republic of China
  • Analytical CenterMoscow, Russian Federation
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Lemenkova, Polina
  
26 sept. 2021
Using GMT for 2D and 3D Modeling of the Ryukyu Trench Topography, Pacific Ocean's Cover Image
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Publié en ligne: 26 sept. 2021
Pages: 213 - 225
Reçu: 11 déc. 2019
Accepté: 28 juin 2020
DOI: https://doi.org/10.2478/mgrsd-2020-0038
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© 2021 Polina Lemenkova, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Figure 1

Bathymetric map of the East China Sea, northern Philippine Sea, Ryukyu Arc and Ryukyu Trench. Bathymetry: GEBCO global terrain model, mapped using GMTSource: author
Bathymetric map of the East China Sea, northern Philippine Sea, Ryukyu Arc and Ryukyu Trench. Bathymetry: GEBCO global terrain model, mapped using GMTSource: author

Figure 2

Geologic map of the Ryukyu Trench. Bathymetric base map: ETOPO1 global terrain model, mapped using GMTSource: author
Geologic map of the Ryukyu Trench. Bathymetric base map: ETOPO1 global terrain model, mapped using GMTSource: author

Figure 3

Model of the geoid in the Ryukyu Trench area. Raster data: Earth Gravitational Model EGM96, mapped by GMTSource: author
Model of the geoid in the Ryukyu Trench area. Raster data: Earth Gravitational Model EGM96, mapped by GMTSource: author

Figure 4

Model of the marine free-air gravity anomaly showing gravitational settings in the Ryukyu trench-arc area. Data: gravity grid, visualized by GMTSource: author
Model of the marine free-air gravity anomaly showing gravitational settings in the Ryukyu trench-arc area. Data: gravity grid, visualized by GMTSource: author

Figure 5

Composite overlay of the 3D topographic mesh model on the 2D geoid contour plot for topographic modelling of the Ryukyu trench-arc areaSource: author
Composite overlay of the 3D topographic mesh model on the 2D geoid contour plot for topographic modelling of the Ryukyu trench-arc areaSource: author

Figure 6

Modelled stacked profiles for the southern (A) and northern (B) segments with the red solid line as a median, and error bars showing weighted standard deviation of the elevations; automatically digitized cross-section profiles in two segments (C), plotted in GMTSource: author
Modelled stacked profiles for the southern (A) and northern (B) segments with the red solid line as a median, and error bars showing weighted standard deviation of the elevations; automatically digitized cross-section profiles in two segments (C), plotted in GMTSource: author

Figure 7

Modelling graphs of the trend curves of general geomorphological transects and slope gradients using various mathematic approximations: fitted regression models y=f(x)+e; Weighted Least Squares, polynomial and Fourier. Plotted by GMTSource: author
Modelling graphs of the trend curves of general geomorphological transects and slope gradients using various mathematic approximations: fitted regression models y=f(x)+e; Weighted Least Squares, polynomial and Fourier. Plotted by GMTSource: author

Figure 8

Statistical histograms showing depth frequency in the cross-sections of the Ryukyu Trench, based on the bathymetric data: northern (A) and southern (B) partsSource: author
Statistical histograms showing depth frequency in the cross-sections of the Ryukyu Trench, based on the bathymetric data: northern (A) and southern (B) partsSource: author
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