ebs 506: special topics estuarine turbidity maximum lecturer: antonio baptista

EBS 506: Special Topics

Estuarine Turbidity MaximumLecturer: Antonio Baptista

Lecture 2

“CMOP: Transforming Ocean Exploration”

2

Course structure

• Typically, three parallel “activities” in each class

Lecture on supporting fundamentals or tools

(~40min)

Discussion of an ETM paper(~1h)

Activity towards understanding

Columbia River ETM

• Summary presentation (10 min• Open discussion (40 min)• Umbrella questions (10 min)

• Contextual forcing, dynamics and governing equations • ETM sources and characteristics• Observation and prediction tools• ETM experiments and analyses

• Part of lecture (occasionally)• Homework assignments (typically)


3

Lecture 2

• Discussion: Lin and Kuo 2003

• Context for understanding the Columbia River ETM: a brief introduction to the river-to-ocean system and to the SATURN/CORIE observatory (conclusion)

• Introduction to governing equations


4

Framing the course: umbrella questions

• What are ETMs?

• Where do ETMs occur?

• What causes ETMs?

• Why are ETMs important?

• How can ETMs be observed/modeled?

• How do ETMs vary in time?

• How do ETMs affect microbial communities, estuarine productivity and fisheries ?

• How are ETMs affected by climate and human activities?

• What do ETMs look like in the Columbia River estuary?


5

Discussion of Lin and Kuo 2003

A model study of Turbidity Maxima in the York River Estuary, Virginia

IntroductionMethodResults

Prototype simulationsDiagnostic analysisAnalysis of mechanisms

Summary and discussion

Map

Tables

Figures


6

The York River

• a navigable estuary on the west side of Chesapeake Bay• approximately 64 km long• ranges in width from 1.6 km at its head to 4 km near its mouth

http://en.wikipedia.org/wiki/York_River_(Virginia)

Ch

esapeake B

ay


7

Figure 1

“The model has 8 vertical layers, which divide the local water depth equally”

pg. 1270


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Figure 2


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Figure 3


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Figure 4


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Figure 5


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Figure 6


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Figure 7


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Figure 8


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Figure 9


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Figure 10


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Figure 11


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Equation 1


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Equations 2 and 3


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Equation 4


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Equations 5 and 6


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Equation 7

1. Convergence of bottom residual flow

2. Tidal asymmetry3. Inhibition of

turbulent diffusion by stratification

4. Local erosion

ebs 506: special topics estuarine turbidity maximum lecturer: antonio baptista

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