Thesis (M.S.)--University of Wisconsin--Madison, 1965. / eContent provider-neutral record in process. Description based on print version record. Bibliography: l. 33-34.

The 'migrating thermal bar' phenomenon, known to occur in certain large, dimictic, freshwater lakes, has been studied in laboratory and mathematical models. The temperature fields observed in the laboratory agreed with those observed in Lake Ontario and a linear physical model for the speed of the 'thermal bar', based on negligible horizontal advection and diffusion of heat, gave reasonable values for both the laboratory model and Lake Ontario. Observations were also made of the associated velocity field. On the basis of this laboratory model, which suggests that horizontal advection and diffusion of heat were not of primary importance, mathematical models were developed. First the temperature field was calculated from the one-dimensional heat diffusion equation. Then the velocity field was calculated assuming that the flow was driven by buoyancy forces and balanced by viscous forces. On the basis of the similitude between the temperature fields found in my models and those observed in the lakes, it seems possible that the velocity field of the models also provides a good approximation to the circulation associated with the bar in lakes. There are no direct measurements of the velocities associated with the bar in lakes and they will be difficult to obtain as such velocities are expected, in Lake Ontario, to be only of the order of 1 cm sec⁻¹. / Science, Faculty of / Physics and Astronomy, Department of / Graduate

Thesis (M.S.)--Oregon State University, 2010. / Printout. Includes bibliographical references (leaves 114-123). Also available on the World Wide Web.

Reach defined analysis concentrated on the water temperature change that occurred in a stream/river segment over the course of one full diurnal cycle. Digital thermistors, data loggers and computer model development were utilized in reach analysis to link parameters of the stream system to a specific temperature change. The methodology employed was relatively simple and fast, and many successive stream segments were analyzed simultaneously. Reach analysis of stream temperature change identified the existing components of the stream system that caused increased water temperature and predicted the effectiveness of managed improvements to the stream system. Stream and river temperature regulation has focused on system and basin wide management. Often, the source of increased water temperature originates in only a part of the stream system. Reach defined analysis identified the portions of the stream system in which most water temperature change occurred, offered an explanation for the temperature response and provided specific information about the alternate strategies that may ameliorate undesired water temperatures. The development of the computer model Heat Source included physically based mathematical descriptions of stream energy and hydrologic processes. An implicit finite difference numerical method was implemented for simultaneous solution. The methodology presented in Heat Source is portable and applicable to all streams, rivers and open channels. / Graduation date: 1997

Thesis (M.S.)--Oregon State University, 1992. / Typescript (photocopy). Includes bibliographical references (leaves 85-90). Also available on the World Wide Web.

Thesis (M.S.)--Oregon State University, 1997. / Typescript (photocopy). Includes bibliographical references (leaves 119-125). Also available on the World Wide Web.

Thesis (Ph. D.)--Colorado State University, 2002. / Title from citation and abstract page (viewed Nov. 17, 2004). Includes bibliographical references.

Thesis (Ph. D.)--University of Wisconsin--Madison. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Thesis (M.S.)--State University of New York at Binghamton, Department of Physics, 2007. / Includes bibliographical references (leaves 79-82).

Thesis (M.S.)--University of Wisconsin--Madison, 1968. / Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.