Fig. 2: Maps of depth to auto-picked largest negative velocity gradient (NVG) and record sections of stacked SRFs.
From: The Indian Plate subducting below the Tibet Plateau is tearing apart
a Map using 1°-radius bins. Color scale: depth to NVG; opacity is proportional to number of SRFs per bin (fully transparent if <3 SRFs in a bin; numbers of SRFs shown in Fig. S2m, n). Yellow stars and gray lines mark locations of SRF boundary (transition from deep (blue) to shallow (red), strongest NVG) as picked from record sections. b–e Record sections calculated using 1°-radius bins, along 32°, 31°, 30° and 29°N as shown in a. f Map using 0.5°-radius bins. g–j Record sections using 0.5°-radius bins along oblique profiles AA’, BB’, CC’, and DD’ as in f. Blue circles are auto-picked maximum negative arrivals between 80 and 220 km, mapped in a and f. Cyan and pink overlays are interpretations of NVGs I-LAB and T-LAB, constrained to agree where profiles intersect. All record sections are vertically exaggerated ×2 and have the same horizontal scale as the maps.
