Figure 6
From: Crustal structure and seismic anisotropy of rift basins in Somaliland
(a)–(e) SKS splitting analysis results for five stations. Two-layer modelling is performed to fit the observed measurements from SKS splitting. The upper layer anisotropy varies only around the direction of ϕ estimated from crustal anisotropy. The top panels show the ϕ versus backazimuth and the bottom panels display δt versus backazimuth plots. Good and fair splitting measurements are shown with red plus and blue cross symbols, null measurements are shown with red circles, while theoretical curves for the best fit are shown in green colour curves. The parameters of the upper and lower layers from the minimum energy method are placed below the top panel. The direction of ϕ ranges from 50 to 56° and delay time is from 0.7 to 1.3 s for the lower layer.
