Flow within a Trough Blowout at Cape Cod

Patrick Hesp, Thomas Smyth, Ian Walker, Paul Gares, Thad Wasklewisz

Research output: Contribution to journalConference article

3 Citations (Scopus)

Abstract

The Province Lands dunefield at Cape Cod is characterised by large parabolic dunes on which have developed very significant numbers of active saucer and bowl blowouts. Blowouts occur across the entire dune landscape but many are initiated on the high lee margins of large erosional ridges and bowl blowouts within the larger parabolic dune landscape. Evolution of these blowouts is characterised by multiple stages. The first few evolutionary stages are described. In addition, the aerodynamics and flow structure within a trough blowout and former saucer blowout developed within a high ridge crest is elucidated from 2D sonic anemometer data, smoke bombs and videography. The flow is characterised by decreasing then increasing flow up the blowout centreline, and marked, highly turbulent opposed flow separation immediately inside and around the marginal entrance walls of the blowout.
LanguageEnglish
Pages288-292
Number of pages5
JournalJournal of Coastal Research
Issue numberSI 75
DOIs
Publication statusPublished - 2016
Externally publishedYes
Event14th International Coastal Symposium - Sydney, Australia
Duration: 6 Mar 201611 Mar 2016
https://www.jcronline.org/toc/coas/75

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blowout
trough
dune
videography
anemometer
flow structure
turbulent flow
smoke
aerodynamics

Cite this

Hesp, P., Smyth, T., Walker, I., Gares, P., & Wasklewisz, T. (2016). Flow within a Trough Blowout at Cape Cod. Journal of Coastal Research, (SI 75), 288-292. https://doi.org/10.2112/SI75-058.1
Hesp, Patrick ; Smyth, Thomas ; Walker, Ian ; Gares, Paul ; Wasklewisz, Thad. / Flow within a Trough Blowout at Cape Cod. In: Journal of Coastal Research. 2016 ; No. SI 75. pp. 288-292.
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Hesp, P, Smyth, T, Walker, I, Gares, P & Wasklewisz, T 2016, 'Flow within a Trough Blowout at Cape Cod', Journal of Coastal Research, no. SI 75, pp. 288-292. https://doi.org/10.2112/SI75-058.1

Flow within a Trough Blowout at Cape Cod. / Hesp, Patrick; Smyth, Thomas; Walker, Ian; Gares, Paul ; Wasklewisz, Thad.

In: Journal of Coastal Research, No. SI 75, 2016, p. 288-292.

Research output: Contribution to journalConference article

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AU - Smyth, Thomas

AU - Walker, Ian

AU - Gares, Paul

AU - Wasklewisz, Thad

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AB - The Province Lands dunefield at Cape Cod is characterised by large parabolic dunes on which have developed very significant numbers of active saucer and bowl blowouts. Blowouts occur across the entire dune landscape but many are initiated on the high lee margins of large erosional ridges and bowl blowouts within the larger parabolic dune landscape. Evolution of these blowouts is characterised by multiple stages. The first few evolutionary stages are described. In addition, the aerodynamics and flow structure within a trough blowout and former saucer blowout developed within a high ridge crest is elucidated from 2D sonic anemometer data, smoke bombs and videography. The flow is characterised by decreasing then increasing flow up the blowout centreline, and marked, highly turbulent opposed flow separation immediately inside and around the marginal entrance walls of the blowout.

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