Global energy conversion rate from geostrophic flows into internal lee waves in the deep ocean
A global estimate of the energy conversion rate from geostrophic flows into internal lee waves in the ocean is presented. The estimate is based on a linear theory applied to bottom topography at O(1–10) km scales obtained from single beam echo soundings, to bottom stratification estimated from clima...
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| Format: | Article |
| Idioma: | en_US |
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American Geophysical Union (AGU)
2012
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| Accés en línia: | http://hdl.handle.net/1721.1/73678 https://orcid.org/0000-0002-3736-1956 |
| _version_ | 1826215353992085504 |
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| author | Nikurashin, Maxim Anatolevich Ferrari, Raffaele |
| author2 | Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences |
| author_facet | Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Nikurashin, Maxim Anatolevich Ferrari, Raffaele |
| author_sort | Nikurashin, Maxim Anatolevich |
| collection | MIT |
| description | A global estimate of the energy conversion rate from geostrophic flows into internal lee waves in the ocean is presented. The estimate is based on a linear theory applied to bottom topography at O(1–10) km scales obtained from single beam echo soundings, to bottom stratification estimated from climatology, and to bottom velocity obtained from a global ocean model. The total energy flux into internal lee waves is estimated to be 0.2 TW which is 20% of the global wind power input into the ocean. The geographical distribution of the energy flux is largest in the Southern Ocean which accounts for half of the total energy flux. The results suggest that the generation of internal lee waves at rough topography is a significant energy sink for the geostrophic flows as well as an important energy source for internal waves and the associated turbulent mixing in the deep ocean. |
| first_indexed | 2024-09-23T16:25:43Z |
| format | Article |
| id | mit-1721.1/73678 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T16:25:43Z |
| publishDate | 2012 |
| publisher | American Geophysical Union (AGU) |
| record_format | dspace |
| spelling | mit-1721.1/736782022-09-29T19:47:07Z Global energy conversion rate from geostrophic flows into internal lee waves in the deep ocean Nikurashin, Maxim Anatolevich Ferrari, Raffaele Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Ferrari, Raffaele A global estimate of the energy conversion rate from geostrophic flows into internal lee waves in the ocean is presented. The estimate is based on a linear theory applied to bottom topography at O(1–10) km scales obtained from single beam echo soundings, to bottom stratification estimated from climatology, and to bottom velocity obtained from a global ocean model. The total energy flux into internal lee waves is estimated to be 0.2 TW which is 20% of the global wind power input into the ocean. The geographical distribution of the energy flux is largest in the Southern Ocean which accounts for half of the total energy flux. The results suggest that the generation of internal lee waves at rough topography is a significant energy sink for the geostrophic flows as well as an important energy source for internal waves and the associated turbulent mixing in the deep ocean. National Science Foundation (U.S.) (OCE‐1024198) 2012-10-09T15:12:02Z 2012-10-09T15:12:02Z 2011-04 2011-01 Article http://purl.org/eprint/type/JournalArticle 0094-8276 http://hdl.handle.net/1721.1/73678 Nikurashin, Maxim, and Raffaele Ferrari. “Global Energy Conversion Rate from Geostrophic Flows into Internal Lee Waves in the Deep Ocean.” Geophysical Research Letters 38.8 (2011). ©2012 American Geophysical Union https://orcid.org/0000-0002-3736-1956 en_US http://dx.doi.org/10.1029/2011gl046576 Geophysical Research Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Geophysical Union (AGU) MIT web domain |
| spellingShingle | Nikurashin, Maxim Anatolevich Ferrari, Raffaele Global energy conversion rate from geostrophic flows into internal lee waves in the deep ocean |
| title | Global energy conversion rate from geostrophic flows into internal lee waves in the deep ocean |
| title_full | Global energy conversion rate from geostrophic flows into internal lee waves in the deep ocean |
| title_fullStr | Global energy conversion rate from geostrophic flows into internal lee waves in the deep ocean |
| title_full_unstemmed | Global energy conversion rate from geostrophic flows into internal lee waves in the deep ocean |
| title_short | Global energy conversion rate from geostrophic flows into internal lee waves in the deep ocean |
| title_sort | global energy conversion rate from geostrophic flows into internal lee waves in the deep ocean |
| url | http://hdl.handle.net/1721.1/73678 https://orcid.org/0000-0002-3736-1956 |
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