The impact of seasonal changes in stratification on the dynamics of internal waves in the Sea of Okhotsk
The properties and dynamics of internal waves in the ocean crucially depend on the vertical structure of water masses. We present detailed analysis of the impact of spatial and seasonal variations in the density-driven stratification in the Sea of Okhotsk on the properties of the classic kinematic a...
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| Format: | Article |
| Language: | English |
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Estonian Academy Publishers
2017-11-01
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| Series: | Estonian Journal of Earth Sciences |
| Subjects: | |
| Online Access: | http://www.kirj.ee/public/Estonian_Journal_of_Earth_Sciences/2017/issue_4/earth-2017-4-238-255.pdf |
| _version_ | 1811290780575203328 |
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| author | Oxana E. Kurkina Tatyana G. Talipova Tarmo Soomere Andrey A. Kurkin Artem V. Rybin |
| author_facet | Oxana E. Kurkina Tatyana G. Talipova Tarmo Soomere Andrey A. Kurkin Artem V. Rybin |
| author_sort | Oxana E. Kurkina |
| collection | DOAJ |
| description | The properties and dynamics of internal waves in the ocean crucially depend on the vertical structure of water masses. We present detailed analysis of the impact of spatial and seasonal variations in the density-driven stratification in the Sea of Okhotsk on the properties of the classic kinematic and nonlinear parameters of internal waves in this water body. The resulting maps of the phase speed of long internal waves and coefficients at various terms of the underlying Gardner’s equation make it possible to rapidly determine the main properties of internal solitary waves in the region and to choose an adequate set of parameters of the relevant numerical models. It is shown that the phase speed of long internal waves almost does not depend on the particular season. The coefficient at the quadratic term of the underlying evolution equation is predominantly negative in summer and winter and therefore internal solitons usually have negative polarity. Numerical simulations of the formation of internal solitons and solibores indicate that seasonal variations in the coefficient at the cubic term of Gardner’s equation lead to substantial variations in the shape of solibores. |
| first_indexed | 2024-04-13T04:18:36Z |
| format | Article |
| id | doaj.art-53edd3294632451fb05cbed80be7c255 |
| institution | Directory Open Access Journal |
| issn | 1736-4728 1736-7557 |
| language | English |
| last_indexed | 2024-04-13T04:18:36Z |
| publishDate | 2017-11-01 |
| publisher | Estonian Academy Publishers |
| record_format | Article |
| series | Estonian Journal of Earth Sciences |
| spelling | doaj.art-53edd3294632451fb05cbed80be7c2552022-12-22T03:02:53ZengEstonian Academy PublishersEstonian Journal of Earth Sciences1736-47281736-75572017-11-0166423825510.3176/earth.2017.2010.3176/earth.2017.20The impact of seasonal changes in stratification on the dynamics of internal waves in the Sea of OkhotskOxana E. Kurkina0Tatyana G. Talipova1Tarmo Soomere2Andrey A. Kurkin3Artem V. Rybin4Nizhny Novgorod State Technical University n.a. R.E. Alekseev, 603950 Nizhny Novgorod, RussiaNizhny Novgorod State Technical University n.a. R.E. Alekseev, 603950 Nizhny Novgorod, Russia / Institute of Applied Physics, 603950 Nizhny Novgorod, RussiaDepartment of Cybernetics, School of Science, Tallinn University of Technology, 12618 Tallinn, Estonia; tarmo.soomere@cs.ioc.ee / Estonian Academy of Sciences, Kohtu 6, 10130 Tallinn, EstoniaNizhny Novgorod State Technical University n.a. R.E. Alekseev, 603950 Nizhny Novgorod, RussiaNizhny Novgorod State Technical University n.a. R.E. Alekseev, 603950 Nizhny Novgorod, RussiaThe properties and dynamics of internal waves in the ocean crucially depend on the vertical structure of water masses. We present detailed analysis of the impact of spatial and seasonal variations in the density-driven stratification in the Sea of Okhotsk on the properties of the classic kinematic and nonlinear parameters of internal waves in this water body. The resulting maps of the phase speed of long internal waves and coefficients at various terms of the underlying Gardner’s equation make it possible to rapidly determine the main properties of internal solitary waves in the region and to choose an adequate set of parameters of the relevant numerical models. It is shown that the phase speed of long internal waves almost does not depend on the particular season. The coefficient at the quadratic term of the underlying evolution equation is predominantly negative in summer and winter and therefore internal solitons usually have negative polarity. Numerical simulations of the formation of internal solitons and solibores indicate that seasonal variations in the coefficient at the cubic term of Gardner’s equation lead to substantial variations in the shape of solibores.http://www.kirj.ee/public/Estonian_Journal_of_Earth_Sciences/2017/issue_4/earth-2017-4-238-255.pdfinternal wavesstratificationinternal solitonsGardner’s equationSea of Okhotsk. |
| spellingShingle | Oxana E. Kurkina Tatyana G. Talipova Tarmo Soomere Andrey A. Kurkin Artem V. Rybin The impact of seasonal changes in stratification on the dynamics of internal waves in the Sea of Okhotsk Estonian Journal of Earth Sciences internal waves stratification internal solitons Gardner’s equation Sea of Okhotsk. |
| title | The impact of seasonal changes in stratification on the dynamics of internal waves in the Sea of Okhotsk |
| title_full | The impact of seasonal changes in stratification on the dynamics of internal waves in the Sea of Okhotsk |
| title_fullStr | The impact of seasonal changes in stratification on the dynamics of internal waves in the Sea of Okhotsk |
| title_full_unstemmed | The impact of seasonal changes in stratification on the dynamics of internal waves in the Sea of Okhotsk |
| title_short | The impact of seasonal changes in stratification on the dynamics of internal waves in the Sea of Okhotsk |
| title_sort | impact of seasonal changes in stratification on the dynamics of internal waves in the sea of okhotsk |
| topic | internal waves stratification internal solitons Gardner’s equation Sea of Okhotsk. |
| url | http://www.kirj.ee/public/Estonian_Journal_of_Earth_Sciences/2017/issue_4/earth-2017-4-238-255.pdf |
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