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Figure 1

From: Changing friction at the base of an Alpine glacier

Figure 1

Study site with stick–slip asperities and seismogram. (a) Orthoimage of Rhonegletscher and study site. (b) Zoom into the red rectangle of a. Background shows the bedrock topography from interpolated ground-penetrating-radar surveys29. Surface topography is indicated by gray contours. Red (blue) triangles indicate seismic sensor array in summer (winter). Red (blue) beach balls show focal mechanisms of individual summer (winter) stick–slip clusters. Zoom into dense asperity region is shown in Supplementary Fig. S6. (c) Vertical seismograms of events from one cluster. Source of orthoimage in a: Swiss Federal Office of Topography.

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