bathymetric-profiles

GMT (Generic Mapping Tools) shell scripts extracting and stacking serial cross-track bathymetric profiles across the Kuril-Kamchatka Trench (north and south segments) with grdtrack, plotting median stacked profiles with error envelopes over a shaded-relief basemap.

GNU Octave script plotting a single cross-section bathymetric profile of a deep-sea trench, with AWK preprocessing to extract distance/depth columns from a raw table before loading and plotting in Octave (markers, fixed limits, 300-dpi export). Kuril-Kamchatka Trench; Lemenkova (2019), AWK+Octave+GMT, GeoScience Engineering 65(4):1-22.

AWK shell pipeline that reshapes a long GMT cross-section profile table into a wide analysis table: extracts the depth column, slices individual trench profiles by regex range, and pastes them side-by-side (12726x5 to 201x11), with mktemp temp files and cleanup.

GNU Octave script plotting stacked cross-section bathymetric profiles of a deep-sea trench from a CSV of depths along a 400-km transect (dlmread, two-panel subplots with markers, annotations, 300-dpi PDF export). Kuril-Kamchatka Trench; Lemenkova (2019), AWK and Octave integrated with GMT, GeoScience Engineering 65(4):1-22.

Over 20 GMT (Generic Mapping Tools) shell scripts fitting polynomial and Fourier regression models to stacked bathymetric trench-profile data by weighted least squares with trend1d, comparing model orders and plotting residuals across many ocean trenches worldwide.

Over 40 GMT (Generic Mapping Tools) shell scripts extracting and stacking serial cross-track bathymetric profiles across ocean trenches with grdtrack, plotting mean/median stacked profiles with error envelopes over shaded-relief basemaps for trench morphology and geomorphometric analysis.

GMT (Generic Mapping Tools) shell scripts fitting polynomial and Fourier regression models to stacked bathymetric trench-profile data by weighted least squares with trend1d, comparing model orders and plotting residuals for Kuril-Kamchatka Trench geomorphology.