Oceanography The Official Magazine of
The Oceanography Society
Volume 24 Issue 01

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Volume 24, No. 1
Pages 100 - 111

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Internal Wave Climates of the Philippine Seas

By James B. Girton , Brian S. Chinn, and Matthew H. Alford 
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Article Abstract

Internal wave measurements from moorings and profiling floats throughout the Philippine Archipelago, collected as part of the Office of Naval Research Philippine Straits Dynamics Experiment, reveal a wealth of subsurface processes, some of which have not been observed previously (in the Philippines or elsewhere). Complex bathymetry and spatially varying tide and wind forcing produce distinct internal wave environments within the network of seas and channels, ranging from quiescent interior basins to remotely forced straits. Internal tides in both the diurnal and semidiurnal bands dominate much of the velocity structure and are likely the dominant source of energy for mixing in the region. In addition, the transfer of energy from the internal tide directly to near-inertial motions through parametric subharmonic instability appears to be active and, rather than wind forcing, is the dominant source of near-inertial band energy.

Citation

Girton, J.B., B.S. Chinn, and M.H. Alford. 2011. Internal wave climates of the Philippine Seas. Oceanography 24(1):100–111, https://doi.org/10.5670/oceanog.2011.07.

References

Alford, M.H. 2001. Internal swell generation: The spatial distribution of energy flux from the wind to mixed layer near-inertial motions. Journal of Physical Oceanography 31:2,359–2,368.

Alford, M. 2003. Improved global maps and 54-year history of wind-work on ocean inertial motions. Geophysical Research Letters 30(8), 1424. [CrossRef]

Alford, M.H. 2008. Observations of parametric subharmonic instability of the diurnal internal tide in the South China Sea. Geophysical Research Letters 35, L15602. [CrossRef]

Alford, M.H., J.A. MacKinnon, Z. Zhao, R. Pinkel, J. Klymak, and T. Peacock. 2007. Internal waves across the Pacific. Geophysical Research Letters 34, L24601. [CrossRef]

Arango, H.G., J.C. Levin, E.N. Curchitser, B. Zhang, A.M. Moore, W. Han, A.L. Gordon, C.M. Lee, and J.B. Girton. 2011. Development of a hindcast/forecast model for the Philippine Archipelago. Oceanography 24(1):58–69. [CrossRef]

Becker, J.J., D.T. Sandwell, W.H.F. Smith, J. Braud, B. Binder, J. Depner, D. Fabre, J. Factor, S. Ingalls, S-H. Kim, and others. 2009. Global bathymetry and elevation data at 30 arc seconds resolution: SRTM30 PLUS. Marine Geodesy 32:355–371. [CrossRef]

Bell, T.H. Jr. 1975. Topographically generated internal waves in the open ocean. Journal of Geophysical Research 80:320–327. [CrossRef]

D’Asaro, E. 1985. The energy flux from the wind to near-inertial motions in the mixed layer. Journal of Physical Oceanography 15:943–959.

Egbert, G., and S. Erofeeva. 2002. Efficient inverse modeling of barotropic ocean tides. Journal of Atmospheric and Oceanic Technology 19:183–204, 2002. [CrossRef]

Garrett, C.J.R., and W.H. Munk. 1975. Space-time scales of internal waves: A progress report. Journal of Geophysical Research 80:291–297. [CrossRef]

Hurlburt, H.E., E.J. Metzger, J. Sprintall, S.N. Riedlinger, R.A. Arnone, T. Shinoda, and X. Xu. 2011. Circulation in the Philippine Archipelago simulated by 1/12° and 1/25° global HYCOM and EAS NCOM. Oceanography 24(1):28–47. [CrossRef]

Jackson, C.R., Y. Arvelyna, and I. Asanuma. 2011. High-frequency nonlinear internal waves around the Philippines. Oceanography 24(1):90–99. [CrossRef]

Lermusiaux, P.F.J., P.J. Haley Jr., W.G. Leslie, A. Agarwal, O.G. Logutov, and L.J. Burton. 2011. Multiscale physical and biological dynamics in the Philippine Archipelago: Predictions and processes. Oceanography 24(1):70–89. [CrossRef]

MacKinnon, J.A., and K.B. Winters. 2005. Subtropical catastrophe: Significant loss of low-mode tidal energy at 28.9°. Geophysical Research Letters 32, L15605. [CrossRef]

May, P.W., J.D. Doyle, J.D. Pullen, and L.T. David. 2011. Two-way coupled atmosphere-ocean modeling of the PhilEx Intensive Observational Periods. Oceanography 24(1):48–57. [CrossRef]

Pollard, R., and R. Millard. 1970. Comparison between observed and simulated wind-generated inertial oscillations. Deep-Sea Research 17:813–816.

Pullen, J., J. Doyle, P. May, C. Chavanne, P. Flament, and R. Arnone. 2008. Monsoon surges trigger oceanic eddy formation and propagation in the lee of the Philippine Islands. Geophysical Research Letters 35, L07604. [CrossRef]

Sanford, T., J. Price, J. Girton, and D. Webb. 2007. Highly resolved observations and simulations of the ocean response to a hurricane. Geophysical Research Letters 34, L13604. [CrossRef]

Zhang, B., E. Curchetser, J. Levin, H. Arango, and W. Han. 2011. Modeling the internal tides and energy flux in the Sulu Sea and adjacent area. Journal of Geophysical Research, submitted.

Zhao, Z., and M.H. Alford. 2006. Source and propagation of internal solitary waves in the northeastern South China Sea. Journal of Geophysical Research 111, C11012. [CrossRef]

Zhao, Z., M.H. Alford, J.A. MacKinnon, and R. Pinkel. 2010. Long-range propagation of the semidiurnal internal tide from the Hawaiian Ridge. Journal of Physical Oceanography 40:713–736. [CrossRef]

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