Caribbean tsunami and earthquake hazards studies

(Top) Shaded relief of the new multibeam bathymetry along the Puerto Rico Trench illuminated from the northwest. Thin contours indicate bathymetry at 500-m intervals. (bottom) Combined bathymetry map of the multibeam bathymetry data, single-beam bathymetry compilation around Puerto Rico, Lidar data near shore, and topography of Puerto Rico. Contour interval is 500 m. Thick barbed white lines denote thrust faults; thick white lines denote normal faults; thin white line denotes strike-slip fault; thin black line denotes northern edge of tilted carbonate platform and southern edge on land; dashed lines indicate head scarp of slope failures; dotted line indicates debris toe; blue lines indicate fissures in the seafloor; A - pull-apart basin; B - location of probable extinct mud volcano observed on backscatter images. Large box and a grey arrow show location and viewing direction of the figure shown in the tsunami section.