Figure F2. A. Guangzhou Marine Geology Survey multichannel seismic lines that locate Site 1143 (proposed site SCS-9) at the crossing points of Line NS95-240 (CDP 3617) and Line NSL95-160 (CDP 1812). Line NS95-240 is shown below. TWT = two-way traveltime. B. Guangzhou Marine Geology Survey multichannel seismic lines that locate Site 1143 (proposed site SCS-9) at the crossing points of Line NS95-240 (CDP 3617) and Line NSL95-160 (CDP 1812). Line NSL95-160 is shown below.