Introduction to Physical Oceanography
Homework Set 7
Due 5 November 2008
Late homework will cost 15 points per week or
part of a week it is late.
In this assignment, you are asked to
consider deep water types and their circulation based
on the core method.
- Using the T-S plot below,
which is based on hydrographic data collected from the South Atlantic:
- Where in the South
Atlantic is the station located (relative to land
or prominent bottom features)? Please be specific, "South
not a acceptable answer.
- Assuming mixing occurs along straight lines,
draw best-fitting straight lines through the water masses
(points) in the figure. Use the intersections of the straight
lines to determine water types. (see figure 13.9 in the
text for an example).
- Do the observed data on the Temperature-Salinity
curve fit the idea of water masses being formed by the mixing
of waters from different water types, e.g. is the fit excellent,
good, poor, or very poor?
- Please give your reasons for judgment.
- What are the temperatures
and salinities of the water types you plotted on the figure
above? Using the temperatures and salinities of the water types
on the figure, and the information in Table 13.1 of the class
notes, what are the names of the water types you plotted on
- Using the information in Section
13.4 of the Class Notes, what is the source of Antarctic Intermediate
and Antarctic Bottom Waters? At what latitude do they
- The figure below shows the
distribution of salinity in the Indian Ocean along 80° E from
India to Antarctica. On the figure, draw the mid-line of at least
one core, and sketch the possible flow of water in the core as
indicated by the distribution of salinity.
- List at least four different
types of tracers that could be used with the core method.
13 October, 2008