Fig. 1 | Scientific Reports

Fig. 1

From: Emissions of mantle helium and abiotic methane at newly discovered black smokers along the Central Indian ridge (12°S–16°S)

Fig. 1

Information about the study area. (a) Map and locations of the sampling sites. Each hydrothermal site is highlighted in red. Ridge tomography was generated from internal multibeam data, and inset global map was drawn from GEBCO 2020 grid29;both were visualized using QGIS30 (b) Photos of active hydrothermal vents taken with a Remotely Operated Vehicle (ROV). (c, d) Cross-sectional bathymetry of hydrothermal vents (marked with blue stars), oriented perpendicular to the spreading center. White bands with dashed lines indicate sections where data gaps were filled by Gaussian interpolation. (e) Cross-sectional bathymetry along sampling sites with helium isotope profile overlaid. Contours are interpolated for visualization only; white dots indicate actual CTD sampling locations and yellow diamonds indicate actual ROV sampling locations.

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