Propagation of internal tides on the Northwest Australian Shelf studied with time-augmented empirical orthogonal functions

J.W. Book; Nicole Jones; Ryan Lowe; Gregory Ivey; C.R. Steinberg; R.M. Brinkman; A.E. Rice; Cynthia Bluteau; S.R. Smith; T.A. Smith; S. Matt

Propagation of internal tides on the Northwest Australian Shelf studied with time-augmented empirical orthogonal functions

J.W. Book
, Nicole Jones
, Ryan Lowe
, Gregory Ivey
, C.R. Steinberg
, R.M. Brinkman
, A.E. Rice
, Cynthia Bluteau
, S.R. Smith
, T.A. Smith
, S. Matt

Research output: Chapter in Book/Conference paper › Conference paper › peer-review

Abstract

A series of collaborations between U.S. and Australian funded
projects resulted in the deployment of 30 moorings at 23 different
sites between November 2011 and August 2012 along
the Northwest Australian Shelf (NWS), a region of strong internal
tide oscillations. The measurement program peaked during
April 2012.

A time-augmented empirical orthogonal function (EOF) technique
was developed and implemented that allowed the correlated
variability, structure, and phasing of semidiurnal internal
tide packets to be evaluated at multiple mooring sites. This
technique allows the EOF analysis to preserve the non-linear
character of the internal wave packets without requiring a large
number of EOF modes.

In three different examples from the NWS, between 45% and
65% of the variance of complex internal tide dominated temperature
structures were explained using only two EOF modes.
Using only the first mode of the EOFs our analysis also identified
a propagation blocking effect that was found to be associated
with the mesoscale coastal circulation and the wind.

Original language	English
Title of host publication	The Proceedings of the 20th Australasian Fluid Mechanics Conference
Editors	Greg Ivey, Nicole Jones, Tongming Zhou
Publisher	Australian Fluid Mechanics Society
Number of pages	4
ISBN (Print)	9781740523776
Publication status	Published - 2016
Event	20th Australasian Fluid Mechanics Conference - University of Western Australia, Perth, Australia Duration: 5 Dec 2016 → 8 Dec 2016 Conference number: 20 http://www.afms.org.au/20AFMC/

Conference

Conference	20th Australasian Fluid Mechanics Conference
Abbreviated title	AFMC
Country/Territory	Australia
City	Perth
Period	5/12/16 → 8/12/16
Internet address	http://www.afms.org.au/20AFMC/

Access to Document

http://people.eng.unimelb.edu.au/imarusic/proceedings/20/744%20Paper.pdf

Cite this

Book, J. W., Jones, N., Lowe, R., Ivey, G., Steinberg, C. R., Brinkman, R. M., Rice, A. E., Bluteau, C., Smith, S. R., Smith, T. A., & Matt, S. (2016). Propagation of internal tides on the Northwest Australian Shelf studied with time-augmented empirical orthogonal functions. In G. Ivey, N. Jones, & T. Zhou (Eds.), The Proceedings of the 20th Australasian Fluid Mechanics Conference Australian Fluid Mechanics Society. http://people.eng.unimelb.edu.au/imarusic/proceedings/20/744%20Paper.pdf

@inproceedings{c2f793c588264abcb79f1588e6e6ea7a,

title = "Propagation of internal tides on the Northwest Australian Shelf studied with time-augmented empirical orthogonal functions",

abstract = "A series of collaborations between U.S. and Australian funded projects resulted in the deployment of 30 moorings at 23 different sites between November 2011 and August 2012 along the Northwest Australian Shelf (NWS), a region of strong internal tide oscillations. The measurement program peaked during April 2012. A time-augmented empirical orthogonal function (EOF) technique was developed and implemented that allowed the correlated variability, structure, and phasing of semidiurnal internal tide packets to be evaluated at multiple mooring sites. This technique allows the EOF analysis to preserve the non-linear character of the internal wave packets without requiring a large number of EOF modes. In three different examples from the NWS, between 45\% and 65\% of the variance of complex internal tide dominated temperature structures were explained using only two EOF modes. Using only the first mode of the EOFs our analysis also identified a propagation blocking effect that was found to be associated with the mesoscale coastal circulation and the wind.",

author = "J.W. Book and Nicole Jones and Ryan Lowe and Gregory Ivey and C.R. Steinberg and R.M. Brinkman and A.E. Rice and Cynthia Bluteau and S.R. Smith and T.A. Smith and S. Matt",

year = "2016",

language = "English",

isbn = "9781740523776",

editor = "Greg Ivey and Nicole Jones and Tongming Zhou",

booktitle = "The Proceedings of the 20th Australasian Fluid Mechanics Conference",

publisher = "Australian Fluid Mechanics Society",

note = "20th Australasian Fluid Mechanics Conference, AFMC ; Conference date: 05-12-2016 Through 08-12-2016",

url = "http://www.afms.org.au/20AFMC/",

}

Book, JW, Jones, N , Lowe, R , Ivey, G, Steinberg, CR, Brinkman, RM, Rice, AE, Bluteau, C, Smith, SR, Smith, TA & Matt, S 2016, Propagation of internal tides on the Northwest Australian Shelf studied with time-augmented empirical orthogonal functions. in G Ivey, N Jones & T Zhou (eds), The Proceedings of the 20th Australasian Fluid Mechanics Conference. Australian Fluid Mechanics Society, 20th Australasian Fluid Mechanics Conference, Perth, Western Australia, Australia, 5/12/16. <http://people.eng.unimelb.edu.au/imarusic/proceedings/20/744%20Paper.pdf>

Propagation of internal tides on the Northwest Australian Shelf studied with time-augmented empirical orthogonal functions. / Book, J.W.; Jones, Nicole ; Lowe, Ryan et al.
The Proceedings of the 20th Australasian Fluid Mechanics Conference. ed. / Greg Ivey; Nicole Jones; Tongming Zhou. Australian Fluid Mechanics Society, 2016.

Research output: Chapter in Book/Conference paper › Conference paper › peer-review

TY - GEN

T1 - Propagation of internal tides on the Northwest Australian Shelf studied with time-augmented empirical orthogonal functions

AU - Book, J.W.

AU - Jones, Nicole

AU - Lowe, Ryan

AU - Ivey, Gregory

AU - Steinberg, C.R.

AU - Brinkman, R.M.

AU - Rice, A.E.

AU - Bluteau, Cynthia

AU - Smith, S.R.

AU - Smith, T.A.

AU - Matt, S.

N1 - Conference code: 20

PY - 2016

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N2 - A series of collaborations between U.S. and Australian funded projects resulted in the deployment of 30 moorings at 23 different sites between November 2011 and August 2012 along the Northwest Australian Shelf (NWS), a region of strong internal tide oscillations. The measurement program peaked during April 2012. A time-augmented empirical orthogonal function (EOF) technique was developed and implemented that allowed the correlated variability, structure, and phasing of semidiurnal internal tide packets to be evaluated at multiple mooring sites. This technique allows the EOF analysis to preserve the non-linear character of the internal wave packets without requiring a large number of EOF modes. In three different examples from the NWS, between 45% and 65% of the variance of complex internal tide dominated temperature structures were explained using only two EOF modes. Using only the first mode of the EOFs our analysis also identified a propagation blocking effect that was found to be associated with the mesoscale coastal circulation and the wind.

AB - A series of collaborations between U.S. and Australian funded projects resulted in the deployment of 30 moorings at 23 different sites between November 2011 and August 2012 along the Northwest Australian Shelf (NWS), a region of strong internal tide oscillations. The measurement program peaked during April 2012. A time-augmented empirical orthogonal function (EOF) technique was developed and implemented that allowed the correlated variability, structure, and phasing of semidiurnal internal tide packets to be evaluated at multiple mooring sites. This technique allows the EOF analysis to preserve the non-linear character of the internal wave packets without requiring a large number of EOF modes. In three different examples from the NWS, between 45% and 65% of the variance of complex internal tide dominated temperature structures were explained using only two EOF modes. Using only the first mode of the EOFs our analysis also identified a propagation blocking effect that was found to be associated with the mesoscale coastal circulation and the wind.

UR - http://www.afms.org.au/20AFMC/

UR - http://afms.org.au/proceedings.html

M3 - Conference paper

SN - 9781740523776

BT - The Proceedings of the 20th Australasian Fluid Mechanics Conference

A2 - Ivey, Greg

A2 - Jones, Nicole

A2 - Zhou, Tongming

PB - Australian Fluid Mechanics Society

T2 - 20th Australasian Fluid Mechanics Conference

Y2 - 5 December 2016 through 8 December 2016

ER -

Propagation of internal tides on the Northwest Australian Shelf studied with time-augmented empirical orthogonal functions

Abstract

Conference

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