Fig. 2: Seismic tomography profiles of Öræfajökull.
From: Internal volcano-magmatic structure of Öræfajökull volcano, Iceland
Cross-section LET inversion results for both S-wave (a, b) and P-wave (d, e) velocities, as well as Vp/Vs ratios (c, f). Profiles AA’ (a−c) and BB’ (d−f) can be viewed on Fig. 1. Black dots represent earthquake source locations, yellow “C” represents the area of the theorized chimney/core, and “?” may represent the source of heat influx (see text for more details). Note the zone of lower P- and S- velocities and high Vp/Vs ratios at depth (2−6 km bsl) representing the theorized area of a melt intrusion. Black contour line represents the 0.85 correlation boundary derived from the checkerboard reconstruction test (see Methods, Fig. S9).
