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Summary for Field Activity Number 1983-012-FA

Alternate Leg ID: L-5-83-HW

Area of Operations: Honolulu, Hawaii, United States, Necker Ridge, Horizon Guyot, American Samoa, Oceania, North Pacific
South Pacific

Dates: October 29, 1983 to November 26, 1983

Objectives: Investigate ferromanganese crusts with emphasis on cobalt-rich crusts via dredging and hard substrate corer (Manheim-Burke type), sidescan sonar, photography, water sampling, and bottom instrument packaging emplacement on Horizon Seamount.

Type of Activity: Seismic profiling
Sea floor mapping

Information to be derived: Sea floor map
Bathymetric maps
Samples and chemical analysis

Summary: Lines: 36; Gravity cores: 3; Piston cores: 7; Chain dredge samples: 62.

USGS Project Number:

Contact: Frank Manheim (

Map for Area of Operations :

Map of field activity boundary.

Platform Info:
photo of LEE,  SAMUEL P
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