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An analysis of the environmental phy...

Maze, Grace Marie.

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An analysis of the environmental physical conditions during Karenia brevis blooms on the West Florida Shelf.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	An analysis of the environmental physical conditions during Karenia brevis blooms on the West Florida Shelf./
作者:	Maze, Grace Marie.
面頁冊數:	107 p.
附註:	Source: Dissertation Abstracts International, Volume: 77-01(E), Section: B.
Contained By:	Dissertation Abstracts International77-01B(E).
標題:	Physical oceanography. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3719992
ISBN:	9781339006710

An analysis of the environmental physical conditions during Karenia brevis blooms on the West Florida Shelf.
Maze, Grace Marie.

An analysis of the environmental physical conditions during Karenia brevis blooms on the West Florida Shelf. - 107 p.

Source: Dissertation Abstracts International, Volume: 77-01(E), Section: B.

Thesis (Ph.D.)--University of Miami, 2015.

The most frequent and intense harmful algal blooms caused by the toxic dinoflagellate Karenia brevis occur on the West Florida Shelf. Causes of these blooms remain poorly known, including environmental conditions during their occurrence. Here the position of the Loop Current, freshwater discharge, and along- and cross-shore wind are analyzed using both real and modeled data. A spectral analysis shows several common spectral peaks at frequencies less than one cycle per 2.5 years, one cycle per year, and one cycle per 6 months with the real data, and one cycle per 2.5 years, one cycle per 9 months and one cycle per 8 months with the modeled data. A statistical analysis where persistent periods of no bloom and large blooms were separated from the real data, and persistent periods of high retention and low retention for the modeled data was also performed. A two-sample unequal variance T-Test analysis of the real data reveals that the difference between periods of large blooms and periods with no bloom are statistically significant to the 90% confidence level for the Loop Current's position. A T-Test analysis of the modeled data reveals similar trends but with some differences that are explained by some slight inaccuracies in the models ability to predict the Loop Current's northern position. Periods of large blooms are found to occur only when the Loop Current is in its northern position when the retention on the shelf is high, allowing a bloom to persist.

ISBN: 9781339006710Subjects--Topical Terms:

3168433
Physical oceanography.

An analysis of the environmental physical conditions during Karenia brevis blooms on the West Florida Shelf.
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500 $a Adviser: Maria J. Olascoaga.
502 $a Thesis (Ph.D.)--University of Miami, 2015.
520 $a The most frequent and intense harmful algal blooms caused by the toxic dinoflagellate Karenia brevis occur on the West Florida Shelf. Causes of these blooms remain poorly known, including environmental conditions during their occurrence. Here the position of the Loop Current, freshwater discharge, and along- and cross-shore wind are analyzed using both real and modeled data. A spectral analysis shows several common spectral peaks at frequencies less than one cycle per 2.5 years, one cycle per year, and one cycle per 6 months with the real data, and one cycle per 2.5 years, one cycle per 9 months and one cycle per 8 months with the modeled data. A statistical analysis where persistent periods of no bloom and large blooms were separated from the real data, and persistent periods of high retention and low retention for the modeled data was also performed. A two-sample unequal variance T-Test analysis of the real data reveals that the difference between periods of large blooms and periods with no bloom are statistically significant to the 90% confidence level for the Loop Current's position. A T-Test analysis of the modeled data reveals similar trends but with some differences that are explained by some slight inaccuracies in the models ability to predict the Loop Current's northern position. Periods of large blooms are found to occur only when the Loop Current is in its northern position when the retention on the shelf is high, allowing a bloom to persist.
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