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Recent geophysical surveys provided seafloor depth data for an undersea portion of the Queen Charlotte–Fairweather fault.

Fig. 1. Recent geophysical surveys provided high-resolution seafloor depth data for the northernmost undersea portion of the Queen Charlotte–Fairweather fault (area outlined in red). The colored seafloor relief represents multibeam echo sounder data acquired along the continental shelf and slope in 2015 and 2016; the gray seafloor relief in deeper water west of the fault was acquired by the University of New Hampshire in 2005. Black boxes are locations of depth imagery shown in Figures 2a–2d. Purple lines represent high-resolution seismic reflection profiles that were acquired in 2016 aboard the R/V Norseman. One such profile (green line) is shown in Figure 2e. AMT represents the Alaska-Aleutian megathrust, and ME indicates Mount Edgecumbe. Click image for larger version.

Recent geophysical surveys provided seafloor depth data for an undersea portion of the Queen Charlotte–Fairweather fault.