Figure 1
From: Heterogeneous slab thermal dehydration driving warm subduction zone earthquakes
Tectonic map. The background color, shown by the “Topo” color scale in the bottom left corner of the figure, with zero being sea level, indicates the surface topography (ETOPO1-Bedrock)76. The white line indicates the study region and the isodepth contours on the subducted Pacific Plate, with a contour interval of 100 km (Slab2)31. The yellow arrows show the convergence velocity. The red barbs on the red line mark the convergent plate boundary. The red triangles with white outlines indicate volcanoes77. The solid circles indicate earthquakes of all magnitudes that occurred from January 2000 through December 2010 (IRIS)74 and M > 5.5 earthquakes that occurred from January 1900 through December 2000 (Centennial)78. Earthquake magnitudes are indicated by the circle sizes, as shown by the legend in the bottom right corner of the map. The five-point stars with labels indicate M ≥ 7.5 earthquakes that have occurred in the past century. The three dashed yellow lines a-c indicate the profiles of the three cross-sections (Fig. S3) in northern, central, and southern Vanuatu, respectively.
