Enewetak Atoll, Enewetok, Marshall Islands, Trust Territory of the Pacific Islands (TTPI), North Pacific;
Summary
In Enewetak Lagoon 12 June - 5 July; on survey 19 June - 4 July following navigation set up and area reconnaissance. This operation was the first of several phases of investigation of two nuclear test craters, OAK and KOA, in the northern part of Enewetak Atoll. Data were acquired in parallel-line grids having nominal line spacings of 26 km (85 ft) for bathymetry, and 76 m (250 ft) for sidescan sonar and sub-bottom (Huntec boomer) profiles. Tie-line data were also acquired. Additional bathymetric data were acquired by small boat. The ship was operated only during daylight hours because hazards from shallow water and proximity to the reef required maximum visibility. A mosaic of the sidescan sonar images was constructed from the field data during the operation. A tide gauge was deployed in each of the craters for bathymetric corrections, although only the KOA gauge appears to have operated successfully. Bathymetry data: 350 km; Sidescan sonar data: 210 km; Sub-bottom profiler (Huntec) data: 115 km.
Comments
Original Center People field contained: Dave Folger (Ch. Sci./geologist); James Robb (curator/geologist); Greg Miller (technician); Kenneth Parolski (technician); Dann Blackwood (photographer).
Project = Pacific Enewetak Atoll Crater Exploration (PEACE), Pacific Enewetak Atoll Crater Exploration (PEACE)
