| Alaska, 1982 | |
[1] [2] [3] [4] [5] [6] [7] [8] [9] [10]
The Lee was towing a kilometer-long string of microphones with an airgun at the end. In this way we could make seismic profiles of the deep seafloor and the crust beneath as we went. The entire voyage consisted of following a grid of lines on a nautical chart of the seas south of the Aleutian Islands, collecting data about the trench and subduction zone there.
September 26: "The routine has set in: two 4-hour watches a day, 8 to 12 o'clock. I sit at a a table and note the ship's speed and heading, water depth, etc. in ledgers and stick labels on the sonar records."
U.S. Geological Survey image
