Generation of low–latitude seamount–trapped waves: a case study of the Seychelles Plateau

Arzeno‐Soltero, Isabella B.; Giddings, Sarah N.; Pawlak, Geno; McClean, Julie L.; Wang, He; Rainville, Luc; Lee, Craig M.

doi:10.1029/2021jc017234

Title: Generation of low–latitude seamount–trapped waves: a case study of the Seychelles Plateau

Journal Article · 11 July 2021 · Journal of Geophysical Research. Oceans

DOI: https://doi.org/10.1029/2021jc017234 · OSTI ID:1810331

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UCI, Irvine, CA (United States); Scripps Institution of Oceanography
Univ. of California, San Diego, CA (United States). Scripps Inst. of Oceanography
Univ. of California, San Diego, CA (United States). Scripps Inst. of Oceanography; Univ. of California, San Diego, CA (United States). Dept. of Mechanical and Aerospace Engineering
Univ. Corporation for Atmospheric Research, Boulder, CO (United States)
Univ. of Washington, Seattle, WA (United States)

Baroclinic seamount-trapped waves are thought to influence their surrounding ecosystem; however, trapped waves are not well-studied in near-equatorial settings, where stratification is strong and Burger numbers are large. Motivated by observations, we use daily output (2005-2009) from the global 0.1-degree Parallel Ocean Program Model (POP) to examine topographically trapped baroclinic waves around the Seychelles Plateau (S > 400) in the tropical Indian Ocean. These trapped waves are associated with velocity and temperature oscillations at periods of 15–16 days, similar to the dominant period of some equatorial Yanai waves. Energy flux maps using POP output suggest that quasi-biweekly equatorial Yanai waves excite trapped waves on the western and south-western flanks of the Seychelles Plateau, near the surface. Here, the anticyclonic energy flux associated with the trapped wave extends vertically throughout the water column and around most of the plateau circumference, diminishing on the eastern flank of the plateau. This work highlights the role that equatorial planetary waves and trapped waves play in facilitating energy redistribution, dissipation, and mixing in the tropical ocean.

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Research Organization:: Univ. of California, San Diego, La Jolla, CA (United States)

Sponsoring Organization:: Office of Naval Research (ONR); USDOE; USDOE Office of Science (SC), Biological and Environmental Research (BER). Earth and Environmental Systems Science Division

Grant/Contract Number:: SC0012778; SC0020073

OSTI ID:: 1810331

Journal Information:: Journal of Geophysical Research. Oceans, Journal Name: Journal of Geophysical Research. Oceans Journal Issue: 8 Vol. 126; ISSN 2169-9275

Publisher:: American Geophysical UnionCopyright Statement

Country of Publication:: United States

Language:: English

References (63)

Energy and heat fluxes due to vertically propagating Yanai waves observed in the equatorial Indian Ocean Smyth, W. D.; Durland, T. S.; Moum, J. N. Journal of Geophysical Research: Oceans, Vol. 120, Issue 1 https://doi.org/10.1002/2014JC010152	journal	January 2015
Evidence for seafloor-intensified mixing by surface-generated equatorial waves: ABYSSAL MIXING IN THE EQUATORIAL PACIFIC Holmes, R. M.; Moum, J. N.; Thomas, L. N. Geophysical Research Letters, Vol. 43, Issue 3 https://doi.org/10.1002/2015GL066472	journal	February 2016
Yanai waves in the western equatorial Indian Ocean: YANAI WAVES IN THE WESTERN INDIAN OCEAN Chatterjee, A.; Shankar, D.; McCreary, J. P. Journal of Geophysical Research: Oceans, Vol. 118, Issue 3 https://doi.org/10.1002/jgrc.20121	journal	March 2013
The global climatology of an interannually varying air–sea flux data set Large, W. G.; Yeager, S. G. Climate Dynamics, Vol. 33, Issue 2-3 https://doi.org/10.1007/s00382-008-0441-3	journal	August 2008
Enhanced subinertial diurnal tides over isolated topographic features Chapman, David C. Deep Sea Research Part A. Oceanographic Research Papers, Vol. 36, Issue 6 https://doi.org/10.1016/0198-0149(89)90030-7	journal	June 1989
The effect of stratification on seamount-trapped waves Brink, K. H. Deep Sea Research Part A. Oceanographic Research Papers, Vol. 36, Issue 6 https://doi.org/10.1016/0198-0149(89)90031-9	journal	June 1989
On the generation of seamount-trapped waves Brink, K. H. Deep Sea Research Part A. Oceanographic Research Papers, Vol. 37, Issue 10 https://doi.org/10.1016/0198-0149(90)90062-Z	journal	October 1990
A strong biological response to oceanic flow past Cobb Seamount Dower, John; Freeland, Howard; Juniper, Kim Deep Sea Research Part A. Oceanographic Research Papers, Vol. 39, Issue 7-8 https://doi.org/10.1016/0198-0149(92)90061-W	journal	July 1992
The monsoon circulation of the Indian Ocean Schott, Friedrich A.; McCreary, Julian P. Progress in Oceanography, Vol. 51, Issue 1 https://doi.org/10.1016/S0079-6611(01)00083-0	journal	January 2001
A test of the larval retention hypothesis in seamount-generated flows Mullineau, Lauren S.; Mills, Susan W. Deep Sea Research Part I: Oceanographic Research Papers, Vol. 44, Issue 5 https://doi.org/10.1016/S0967-0637(96)00130-6	journal	May 1997
Flow and particle motion induced above a tall seamount by steady and tidal background currents Goldner, Daniel R.; Chapman, David C. Deep Sea Research Part I: Oceanographic Research Papers, Vol. 44, Issue 5 https://doi.org/10.1016/S0967-0637(96)00131-8	journal	May 1997
Chlorophyll-a variability in the Seychelles–Chagos Thermocline Ridge: Analysis of a coupled biophysical model Dilmahamod, A. F.; Hermes, J. C.; Reason, C. J. C. Journal of Marine Systems, Vol. 154 https://doi.org/10.1016/j.jmarsys.2015.10.011	journal	February 2016
A prototype two-decade fully-coupled fine-resolution CCSM simulation McClean, Julie L.; Bader, David C.; Bryan, Frank O. Ocean Modelling, Vol. 39, Issue 1-2 https://doi.org/10.1016/j.ocemod.2011.02.011	journal	January 2011
The 2004–2008 mean and annual cycle of temperature, salinity, and steric height in the global ocean from the Argo Program Roemmich, Dean; Gilson, John Progress in Oceanography, Vol. 82, Issue 2 https://doi.org/10.1016/j.pocean.2009.03.004	journal	August 2009
Global eddy-resolving ocean simulations driven by 1985-1995 atmospheric winds Maltrud, Mathew E.; Smith, Richard D.; Semtner, Albert J. Journal of Geophysical Research: Oceans, Vol. 103, Issue C13 https://doi.org/10.1029/1998JC900013	journal	December 1998
Semi-diurnal and diurnal tidal dissipation from TOPEX/Poseidon altimetry: TIDAL DISSIPATION Egbert, Gary D.; Ray, Richard D. Geophysical Research Letters, Vol. 30, Issue 17 https://doi.org/10.1029/2003GL017676	journal	September 2003
Intraseasonal variability in the upper layer currents observed in the eastern equatorial Indian Ocean Masumoto, Yukio Geophysical Research Letters, Vol. 32, Issue 2 https://doi.org/10.1029/2004GL021896	journal	January 2005
A biweekly mode in the equatorial Indian Ocean Sengupta, Debasis Journal of Geophysical Research, Vol. 109, Issue C10 https://doi.org/10.1029/2004JC002329	journal	January 2004
Indian Ocean circulation and climate variability Schott, Friedrich A.; Xie, Shang-Ping; McCreary, Julian P. Reviews of Geophysics, Vol. 47, Issue 1 https://doi.org/10.1029/2007RG000245	journal	January 2009
Seasonal and intraseasonal biogeochemical variability in the thermocline ridge of the southern tropical Indian Ocean Resplandy, L.; Vialard, J.; Lévy, M. Journal of Geophysical Research, Vol. 114, Issue C7 https://doi.org/10.1029/2008JC005246	journal	January 2009
Intraseasonal vertical velocity variation caused by the equatorial wave in the central equatorial Indian Ocean Horii, Takanori; Masumoto, Yukio; Ueki, Iwao Journal of Geophysical Research, Vol. 116, Issue C9 https://doi.org/10.1029/2011JC007081	journal	January 2011
Process‐Specific Contributions to Anomalous Java Mixed Layer Cooling During Positive IOD Events Delman, Andrew S.; McClean, Julie L.; Sprintall, Janet Journal of Geophysical Research: Oceans, Vol. 123, Issue 6 https://doi.org/10.1029/2017JC013749	journal	June 2018
Seasonal Cycle and Annual Reversal of the Somali Current in an Eddy-Resolving Global Ocean Model Wang, He; McClean, Julie L.; Talley, Lynne D. Journal of Geophysical Research: Oceans, Vol. 123, Issue 9 https://doi.org/10.1029/2018JC013975	journal	September 2018
Oceanic Heat Delivery to the Antarctic Continental Shelf: Large‐Scale, Low‐Frequency Variability Palóczy, André; Gille, Sarah T.; McClean, Julie L. Journal of Geophysical Research: Oceans, Vol. 123, Issue 11 https://doi.org/10.1029/2018JC014345	journal	November 2018
Generation of Quasi‐Biweekly Yanai Waves in the Equatorial Indian Ocean Arzeno, Isabella B.; Giddings, Sarah N.; Pawlak, Geno Geophysical Research Letters, Vol. 47, Issue 16 https://doi.org/10.1029/2020GL088915	journal	August 2020
Observations and Modeling of Ocean Circulation in the Seychelles Plateau Region Castillo‐Trujillo, Alma Carolina; Arzeno‐Soltero, Isabella B.; Giddings, Sarah N. Journal of Geophysical Research: Oceans, Vol. 126, Issue 2 https://doi.org/10.1029/2020JC016593	journal	February 2021
Biweekly Mixed Rossby‐Gravity Waves in the Equatorial Indian Ocean Pujiana, Kandaga; McPhaden, Michael J. Journal of Geophysical Research: Oceans, Vol. 126, Issue 5 https://doi.org/10.1029/2020JC016840	journal	May 2021
Oceanic vertical mixing: A review and a model with a nonlocal boundary layer parameterization Large, W. G.; McWilliams, J. C.; Doney, S. C. Reviews of Geophysics, Vol. 32, Issue 4 https://doi.org/10.1029/94RG01872	journal	January 1994
Tidal and lower frequency currents above Fieberling Guyot Brink, K. H. Journal of Geophysical Research, Vol. 100, Issue C6 https://doi.org/10.1029/95JC00998	journal	January 1995
Near-boundary mixing above the flanks of a midlatitude seamount Toole, John M.; Schmitt, Raymond W.; Polzin, Kurt L. Journal of Geophysical Research: Oceans, Vol. 102, Issue C1 https://doi.org/10.1029/96JC03160	journal	January 1997
Observations of low-frequency circulation and amplified subinertial tidal currents at Cobb Seamount Codiga, Daniel L.; Eriksen, Charles C. Journal of Geophysical Research: Oceans, Vol. 102, Issue C10 https://doi.org/10.1029/97JC01451	journal	October 1997
Physics and observational signatures of free, forced, and frictional stratified seamount-trapped waves Codiga, Daniel L. Journal of Geophysical Research: Oceans, Vol. 102, Issue C10 https://doi.org/10.1029/97JC01452	journal	October 1997
Reduced mixing from the breaking of internal waves in equatorial waters Gregg, Michael C.; Sanford, Thomas B.; Winkel, David P. Nature, Vol. 422, Issue 6931 https://doi.org/10.1038/nature01507	journal	April 2003
Seamounts are hotspots of pelagic biodiversity in the open ocean Morato, T.; Hoyle, S. D.; Allain, V. Proceedings of the National Academy of Sciences, Vol. 107, Issue 21 https://doi.org/10.1073/pnas.0910290107	journal	May 2010
Edge‐, bottom‐, and Rossby waves in a rotating stratified fluid Rhines, Peter Geophysical Fluid Dynamics, Vol. 1, Issue 3-4 https://doi.org/10.1080/03091927009365776	journal	June 1970
Formation of Taylor caps over a tall isolated seamount in a stratified ocean Chapman, David C.; Haidvogel, Dale B. Geophysical & Astrophysical Fluid Dynamics, Vol. 64, Issue 1-4 https://doi.org/10.1080/03091929208228084	journal	March 1992
A test of the seamount oasis hypothesis: seamounts support higher epibenthic megafaunal biomass than adjacent slopes: A test of the seamount oasis hypothesis Rowden, Ashley A.; Schlacher, Thomas A.; Williams, Alan Marine Ecology, Vol. 31 https://doi.org/10.1111/j.1439-0485.2010.00369.x	journal	August 2010
Paradigms in seamount ecology: fact, fiction and future: Paradigms in seamount ecology Rowden, Ashley A.; Dower, John F.; Schlacher, Thomas A. Marine Ecology, Vol. 31 https://doi.org/10.1111/j.1439-0485.2010.00400.x	journal	September 2010
Topographically Induced Mixing Around a Shallow Seamount Lueck, R. G. Science, Vol. 276, Issue 5320 https://doi.org/10.1126/science.276.5320.1831	journal	June 1997
The Ecology of Seamounts: Structure, Function, and Human Impacts Clark, Malcolm R.; Rowden, Ashley A.; Schlacher, Thomas Annual Review of Marine Science, Vol. 2, Issue 1 https://doi.org/10.1146/annurev-marine-120308-081109	journal	January 2010
Accurate and Computationally Efficient Algorithms for Potential Temperature and Density of Seawater McDougall, Trevor J.; Jackett, David R.; Wright, Daniel G. Journal of Atmospheric and Oceanic Technology, Vol. 20, Issue 5 https://doi.org/10.1175/1520-0426(2003)20<730:AACEAF>2.0.CO;2	journal	May 2003
On Coastal Trapped Waves: Analysis and Numerical Calculation by Inverse Iteration Huthnance, John M. Journal of Physical Oceanography, Vol. 8, Issue 1 https://doi.org/10.1175/1520-0485(1978)008<0074:OCTWAA>2.0.CO;2	journal	January 1978
A Comparison of Long Coastal Trapped Wave Theory with Observations off Peru Brink, K. H. Journal of Physical Oceanography, Vol. 12, Issue 8 https://doi.org/10.1175/1520-0485(1982)012<0897:ACOLCT>2.0.CO;2	journal	August 1982
Scattering of Coastal-Trapped Waves by Irregularities in Coastline and Topography Wilkin, John L.; Chapman, David C. Journal of Physical Oceanography, Vol. 20, Issue 3 https://doi.org/10.1175/1520-0485(1990)020<0396:SOCTWB>2.0.CO;2	journal	March 1990
Numerical Simulation of Flow around a Tall Isolated Seamount. Part II: Resonant Generation of Trapped Waves Haidvogel, Dale B.; Beckmann, Aike; Chapman, David C. Journal of Physical Oceanography, Vol. 23, Issue 11 https://doi.org/10.1175/1520-0485(1993)023<2373:NSOFAA>2.0.CO;2	journal	November 1993
Geographical Variability of the First Baroclinic Rossby Radius of Deformation Chelton, Dudley B.; deSzoeke, Roland A.; Schlax, Michael G. Journal of Physical Oceanography, Vol. 28, Issue 3 https://doi.org/10.1175/1520-0485(1998)028<0433:GVOTFB>2.0.CO;2	journal	March 1998
Equatorial Pacific Ocean Horizontal Velocity, Divergence, and Upwelling* Johnson, Gregory C.; McPhaden, Michael J.; Firing, Eric Journal of Physical Oceanography, Vol. 31, Issue 3 https://doi.org/10.1175/1520-0485(2001)031<0839:EPOHVD>2.0.CO;2	journal	March 2001
The 10–20-Day Mode of the 1979 Indian Monsoon: Its Relation with the Time Variation of Monsoon Rainfall Chen, Tsing-Chang; Chen, Jau-Ming Monthly Weather Review, Vol. 121, Issue 9 https://doi.org/10.1175/1520-0493(1993)121<2465:TDMOTI>2.0.CO;2	journal	September 1993
Transient Response in a Z -Level Ocean Model That Resolves Topography with Partial Cells Pacanowski, Ronald C.; Gnanadesikan, Anand Monthly Weather Review, Vol. 126, Issue 12 https://doi.org/10.1175/1520-0493(1998)126<3248:TRIAZL>2.0.CO;2	journal	December 1998
Seasonal Variation of the Seychelles Dome Yokoi, Takaaki; Tozuka, Tomoki; Yamagata, Toshio Journal of Climate, Vol. 21, Issue 15 https://doi.org/10.1175/2008JCLI1957.1	journal	August 2008
The Community Earth System Model: A Framework for Collaborative Research Hurrell, James W.; Holland, M. M.; Gent, P. R. Bulletin of the American Meteorological Society, Vol. 94, Issue 9 https://doi.org/10.1175/BAMS-D-12-00121.1	journal	September 2013
Meridional Heat Advection due to Mixed Rossby Gravity Waves in the Equatorial Indian Ocean Nagura, Motoki; Masumoto, Yukio; Horii, Takanori Journal of Physical Oceanography, Vol. 44, Issue 1 https://doi.org/10.1175/JPO-D-13-0141.1	journal	January 2014
Energy Fluxes in Coastal Trapped Waves Musgrave, R. C. Journal of Physical Oceanography, Vol. 49, Issue 12 https://doi.org/10.1175/JPO-D-18-0172.1	journal	December 2019
The Large-Scale Vorticity Balance of the Antarctic Continental Margin in a Fine-Resolution Global Simulation Palóczy, André; McClean, Julie L.; Gille, Sarah T. Journal of Physical Oceanography, Vol. 50, Issue 8 https://doi.org/10.1175/JPO-D-19-0307.1	journal	August 2020
Dynamics of Biweekly Oscillations in the Equatorial Indian Ocean* Miyama, Toru; McCreary, Julian P.; Sengupta, Debasis Journal of Physical Oceanography, Vol. 36, Issue 5 https://doi.org/10.1175/JPO2897.1	journal	May 2006
Global Abyssal Mixing Inferred from Lowered ADCP Shear and CTD Strain Profiles Kunze, Eric; Firing, Eric; Hummon, Julia M. Journal of Physical Oceanography, Vol. 36, Issue 8 https://doi.org/10.1175/JPO2926.1	journal	August 2006
Anomalous diurnal tidal currents on the Yermak Plateau Hunkins, Kenneth Journal of Marine Research, Vol. 44, Issue 1 https://doi.org/10.1357/002224086788460139	journal	February 1986
Seasonal Surface Chlorophyll a Variability in the Seychelles–Chagos Thermocline Ridge George, Jenson V.; Nuncio, M.; Anilkumar, N. Current Science, Vol. 114, Issue 04 https://doi.org/10.18520/cs/v114/i04/868-878	journal	February 2018
Spectrum Analysis of Symmetric and Antisymmetric Equatorial Waves [対称および反対称赤道波のスペクトル解析] Yanai, M.; Murakami, M. Journal of the Meteorological Society of Japan. Ser. II, Vol. 48, Issue 4 https://doi.org/10.2151/jmsj1965.48.4_331	journal	January 1970
DUACS DT2014: the new multi-mission altimeter data set reprocessed over 20 years Pujol, Marie-Isabelle; Faugère, Yannice; Taburet, Guillaume Ocean Science, Vol. 12, Issue 5 https://doi.org/10.5194/os-12-1067-2016	journal	January 2016
The Global Seamount Census Wessel, Paul; Sandwell, David; Kim, Seung-Sep Oceanography, Vol. 23, Issue 01 https://doi.org/10.5670/oceanog.2010.60	journal	March 2010
Motion, Commotion, and Biophysical Connections at Deep Ocean Seamounts Lavelle, J. William; Mohn, Christian Oceanography, Vol. 23, Issue 01 https://doi.org/10.5670/oceanog.2010.64	journal	March 2010
Northern Arabian Sea Circulation-Autonomous Research (NASCar): A Research Initiative Based on Autonomous Sensors Centurioni, Luca; Hormann, Verena; Talley, Lynne Oceanography, Vol. 30, Issue 2 https://doi.org/10.5670/oceanog.2017.224	journal	June 2017

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