Publication Date:
2022-05-26
Description:
Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy at the Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution May 1988
Description:
This thesis is a study of the effect of geothermal sources on the deep circulation,
temperature and salinity fields. In Chapter 1 background material is given
on the strength and distribution of geothermal heating. In Chapter 2 evidence for
the influence of a hydrothermal system in the rift valley of the Mid-Atlantic Ridge
on nearby property fields and a model of the flow around such a heat source are
presented, with an analysis of a larger-scale effect. Results of an analytical model
for a heat source on a β-plane in Chapter 3 show how the response far from the
source can have a structure different from the forcing because of its dependence
on two parameters: a Peclet number (the ratio of horizontal advection and vertical
diffusion), and a Froude-number-like parameter (the ratio of long wave phase speed
to background flow speed) which control the relative amount of damping and advection
of different vertical scales. The solutions emphasize the different behavior
of a dynamical field like temperature compared to tracers introduced at the source.
These ideas are useful for interpreting more complicated solutions from a numerical
model presented in the final chapter.
Description:
This study was supported by the National Science Foundation grants OCE8515642
to T. Joyce and OCE82-13967 to B. Warren, and by the WHOI-MIT Joint
Program Ocean Ventures Fund.
Keywords:
Geothermal resources
;
Atlantis II (Ship : 1963-) Cruise AII109
;
Oceanus (Ship : 1975-) Cruise OC133
;
Oceanus (Ship : 1975-) Cruise OC78
;
Knorr (Ship : 1970-) Cruise KN104
Repository Name:
Woods Hole Open Access Server
Type:
Thesis
Format:
application/pdf
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