Global energy conversion rate from geostrophic flows into internal lee waves in the deep ocean
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Ferrari_Global energy.pdf
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Author(s)
Nikurashin, Maxim Anatolevich
Ferrari, Raffaele
Date Issued
April 2011
Journal
Geophysical Research Letters
Publisher
American Geophysical Union (AGU)
Citation
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
Version
Final published version
Abstract
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.
MIT Department
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
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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.
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DOI of Published Version
https://doi.org/10.1029/2011gl046576
