| 要約: | It is with especially great pleasure, and a bit of nostalgia, that I introduce the March 2012 special issue of Oceanography on "Oceanic Spreading Center Processes: Ridge 2000 Program Research." My very first oceanographic cruise was to the Juan de Fuca Ridge in 1983 aboard the National Oceanic and Atmospheric Administration (NOAA) ship Discoverer. On that cruise, scientists from NOAA and the Lamont-Doherty Geological Observatory were collecting deep-sea photographs and seafloor basalt samples to ground truth the Sea MARC I side-scan sonar images collected the previous year from the NOAA ship Surveyor. The camera sled was "homemade" at Lamont by Bill Ryan and his group of students and technicians. It was far from sleek (see photo), but it did the job well as long as we didn't hang it up on a cliff—which happened on occasion.
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