Accession Number:

AD0749930

Title:

Shipboard Cruise Report on Leg Two of Expedition South Tow: Studies in the Southeast Pacific.

Descriptive Note:

Summary rept. 15 Feb-20 Mar 72,

Corporate Author:

SCRIPPS INSTITUTION OF OCEANOGRAPHY SAN DIEGO CALIF MARINE PHYSICAL LAB

Report Date:

1972-08-01

Pagination or Media Count:

42.0

Abstract:

The report summarizes Leg 2 of Expedition South Tow, conducted by the RV THOMAS WASHINGTON from Papeete, Tahiti to Valparaiso, Chile during 15 February - 20 March 1972. Extensive near-bottom geophysical data over the Pacific-Antarctic Rise at 51 degrees S were obtained in order to study the detailed structure of the magnetic time scale between magnetic Anomaly 3 on both sides of the rise crest. Underway bathymetry, magnetic, and navigation plots are included. An excellent surface magnetic profile on the west flank of the Pacific-Antarctic Rise showed Anomalies 1-20 clearly with an abrupt increase in the spreading half-rate from 2.3 cmyr for anomalies older than Anomaly 5 to 4.8 cmyr for the younger anomalies. Author

Subject Categories:

  • Physical and Dynamic Oceanography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE