碩士 / 國立中山大學 / 海洋資源學系 / 82 / A stable research platform,located at a coastal site off
Taichung Harbor with an average water depth of about 8m,has
been instrumented with a sonic anemometer with three-component
wind speed, and air temperature sensors,and with three wind
monitors at three different heights above the sea surface. A
telemetry system has been used to transmit data to an inland
receiving station.The wind turbulence data for the period
between April 30 and November 19,1993 from this platform have
been analyzed by the eddy correlation method to obtain wind
stress and heat fluxes at various wind speeds. Data from near
south-bound direction with longer fetch were used separately by
the present study because it is unobstructed from the land and
marine structures.Our results indicate that the wind stress is
proportional to the square of wind speed.At lower winds,the
drag coefficient,Cd,decteases with increaseing wind speed.At
higher winds,it seems that Cd increases or remains unchanged
with the wind speed.Cd was found to be generally larger for
growing waves(smaller Co/u*)than for steady or decaying waves(
larger Co/u*).The value of Cd with longer fetch from near north
direction is generally higher than that with shorter fetch from
near west direction.On the other hand,heat fluxes increase with
the increasing wind speed and wave height.
| Identifer | oai:union.ndltd.org:TW/082NSYSU277001 |
| Date | January 1994 |
| Creators | Ko, Chih Shing, 柯志軒 |
| Contributors | Tseng, Ruo Shan, 曾若玄 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 67 |
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