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
| Identifer | oai:union.ndltd.org:ORGSU/oai:ir.library.oregonstate.edu:1957/27036 |
| Date | 10 October 1996 |
| Creators | Boyd, Matthew S. |
| Contributors | Cuenca, Richard, Miner, Ronald |
| Source Sets | Oregon State University |
| Language | en_US |
| Detected Language | English |
| Type | Thesis/Dissertation |
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