Applied Physics of Air-Sea-Land Interaction during Hurricane Katrina

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Prof. S. A. Hsu
Prof. S. A. Hsu
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Professor S. A. Hsu
Professor S. A. Hsu
α Louisiana State University Louisiana State University

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Applied Physics of Air-Sea-Land Interaction during Hurricane Katrina

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Abstract

A decade ago in August 2005 Hurricane Katrina devastated north-central Gulf of Mexico and southeastern Louisiana and Mississippi Gulf Coast. Although nearly all anemometers in the affected areas were destroyed by Katrina, few wind and wave measurement stations did survive the storm and provide some data to advance our understanding of the physics of air-sealand interaction. Analyses of these measurements indicate that : 1. On the basis of upper-air measurements made at Key West, FL, and Slidell, LA, the power-law wind profile is verified in the atmospheric surface boundary layer (up to 300m) where the friction dominants; 2. The cyclostrophic equation, which is the balance between centrifugal force and pressure gradient force, is validated so that the wind speed at 10m over the water, U10 = 6.3(1013 -Pmin) ^ (1/2), where Pmin is the minimum sea-level pressure; 3.The significant wave height (Hs) and its dominant wave period (Tp) can be normalized by using U*, which is the friction velocity (= (τ/ρ) ^ (1/2), where τ is the wind stress and ρ is the air density).

References

18 Cites in Article
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  12. S Hsu (2013). Storm surges in New York during Hurricane Sandy in 2012: A verification of the windstress tide relation.
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  14. S Hsu (2015). Relation between sea surface roughness, wind speed at 10m, and wave parameters during a tropical cyclone.
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Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

How to Cite This Article

Prof. S. A. Hsu. 2015. \u201cApplied Physics of Air-Sea-Land Interaction during Hurricane Katrina\u201d. Global Journal of Science Frontier Research - H: Environment & Environmental geology GJSFR-H Volume 15 (GJSFR Volume 15 Issue H2): .

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Journal Specifications

Crossref Journal DOI 10.17406/GJSFR

Print ISSN 0975-5896

e-ISSN 2249-4626

Keywords
Classification
GJSFR-H Classification: FOR Code: 059999
Version of record

v1.2

Issue date

May 15, 2015

Language
en
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A decade ago in August 2005 Hurricane Katrina devastated north-central Gulf of Mexico and southeastern Louisiana and Mississippi Gulf Coast. Although nearly all anemometers in the affected areas were destroyed by Katrina, few wind and wave measurement stations did survive the storm and provide some data to advance our understanding of the physics of air-sealand interaction. Analyses of these measurements indicate that : 1. On the basis of upper-air measurements made at Key West, FL, and Slidell, LA, the power-law wind profile is verified in the atmospheric surface boundary layer (up to 300m) where the friction dominants; 2. The cyclostrophic equation, which is the balance between centrifugal force and pressure gradient force, is validated so that the wind speed at 10m over the water, U10 = 6.3(1013 -Pmin) ^ (1/2), where Pmin is the minimum sea-level pressure; 3.The significant wave height (Hs) and its dominant wave period (Tp) can be normalized by using U*, which is the friction velocity (= (τ/ρ) ^ (1/2), where τ is the wind stress and ρ is the air density).

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Applied Physics of Air-Sea-Land Interaction during Hurricane Katrina

Professor S. A. Hsu
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