UNITED STATES
DEPARTMENT OF THE INTERIOR
FISH AND WILDLIFE SERVICE
Bureau of Commercial Fisheries
P. O. Box 3830, Honolulu, Hawaii 96812
PLAN FOR TOWNSEND CROMWELL, CRUISE 2
I. OBJECTIVE:
The Trade Wind Zone Investigation is an oceanographic experiment
to verify a qualitative circulation model and to obtain those data
which are necessary to develop a model to explain the changes in
the distribution of properties (temperature, salinity, etc.) in
the sea in terms of seasonal changes in processes (net heat
exchange and water exchange across the sea surface, wind stress,
and effects of water motion). The experiment consists of three
phases: the design and planning phase to ensure that the data
to be obtained are significant in terms of the problems to be
tackled; the field phase, a four-ship, 24 months operation to
obtain observations of the three-dimensional time-sequence dis-
distribution of properties in the North Pacific trade wind zone;
the analysis and evaluation phase.
As part of the design and planning phase of the investigation a
sequence of cruises to take place at 30-day intervals using one
ship has been planned to test and evaluate the sampling procedures
and processing techniques.
Cruise 2 of the Townsend Cromwell is the second in this series of
cruises.
II. CRUISE PERIOD:
March 16 to April 4, 1964.
III. AREA OF OPERATION:
Central North Pacific bounded by latitudes 10° N., 27° N. and
longitudes 148° W., 158° W. (See attached chart for cruise track).
IV. MISSIONS:
A. OCEANOGRAPHIC
1. On each of the 42 oceanographic stations temperatures and
salinities will be obtained at the following depths: 0,
10 (50), 75, 100, 125, 150, 175, 200, 225, 250, 275, 300,
400, 500, 600, 800, 1000, 1200, and 1500 meters.