In this thesis, the interpretation and reduction of ocean heat
flow measurements are discussed on the basis of theoretical models.
The instrument effect x heat flow measurements is investigated for the
case of long period measurements by studying the heat conduction
along the measurement probe for both steady and unsteady state bottom
temperatures. This effect is found to be unimportant. Measurement
errors due to recent bottom temperature transients are studied
and the possible magnitude of such errors is estimated. Moreover,
effects of climatic variation on the ocean floor temperature are estimated
on the basis of diffusion models. It is shown that climatic variations
with periods longer than one thousand years will be unattenuated
and will affect the entire ocean floor.
The perturbation method is used to study the effects of an irregular
topography and a variable thickness of ocean floor sediments on the heat flow. Some special examples are given to provide a comparison
between the perturbation solutions and exact solutions of similar
problems. The perturbation method is also applied to a buried body
with different thermal conductivity from its surroundings and the reliability
of the perturbation solution is examined.
Heat flow anomalies due to heat transport by magma intruded
into crustal layers is studied by solving the heat conduction equation.
It is shown that magmatic intrusions can lead to very large surface
heat flow anomalies.
Finally, the possibility of deriving the ocean floor thermal gradient
on the basis of on-ship measurements performed on sediment
cores is investigated. The results appear positive. The temperature
variations in flowing wells and the temperature variation in a cylindrical
sediment core influenced by the movement of water along the
axis of the core are also studied. / Graduation date: 1968
| Identifer | oai:union.ndltd.org:ORGSU/oai:ir.library.oregonstate.edu:1957/28208 |
| Date | 14 November 1967 |
| Creators | Shih, Keh-gong |
| Contributors | Bodvarsson, Gunnar |
| Source Sets | Oregon State University |
| Language | en_US |
| Detected Language | English |
| Type | Thesis/Dissertation |
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