PMEL Publications Abstract

FY 1970

Bathymetry and magnetics of a region (POL-421-3) 29° to 35°N, 155° to 165°W

Rea, D.K.

NOAA Tech. Report ERL146-POL4 (1970)

Bathymetric and magnetic anomaly maps of an area in the central north Pacific Ocean have been prepared from data collected for ESSA’s SEAMAP project to delineate and interpret the topographic and magnetic features present. The bathymetric map includes the northern portion of the Musicians Seamounts, a part of the Murray fracture zone, a large elevated fault block, a small part of the Hawaiian Arch, and abyssal hills. The magnetic anomaly map shows normally polarized local dipole anomalies associated with the seamounts and linear dipole anomalies associated with fault scarps. Two linear dipole anomalies not associated with topography may reflect shear zone that resulted from a change in direction of sea-floor spreading and that was offset by a minor transform fault.

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