Figure 3
From: Shallow carbon storage in ancient buried thermokarst in the South Kara Sea

(a) Single U-shaped structure in the intersection of two high-resolution seismic lines. Inset shows volumetric approximation for an average-size U-shaped structure, providing constrains for the total thermokarst pool volume within the study area. See location in Fig. 1. (b) Fragment of a high-resolution seismic line, showing acoustic chimneys – evidence for shallow fluid flow and gas migration in the South Kara Sea and related seafloor mounds above the chimney system.