Forced Internal Waves in the Arctic Ocean.
When the surface of an ocean is disturbed by the effects of a storm, motions may be excited in the pycnocline by the action of forced internal waves. This dissertation deals with experimental and theoretical studies of such motions. During the Arctic Mixed Layer Experiment in the Spring of 1976, man...
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ftdtic:ADA091046 2023-05-15T14:50:23+02:00 Forced Internal Waves in the Arctic Ocean. Morison,James Howe WASHINGTON UNIV SEATTLE DEPT OF OCEANOGRAPHY 1980-05 text/html http://www.dtic.mil/docs/citations/ADA091046 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA091046 en eng http://www.dtic.mil/docs/citations/ADA091046 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Physical and Dynamic Oceanography *INTERNAL WAVES STRESSES VELOCITY DENSITY MEASUREMENT OCEAN CURRENTS THESES TURBULENCE PROFILES MEASURING INSTRUMENTS STORMS SEA ICE BEAUFORT SEA ARCTIC OCEAN Mixed layers(Marine) Pycnocline Arctic Mixed Layer Experiment Forced oscillation Text 1980 ftdtic 2016-02-20T18:49:37Z When the surface of an ocean is disturbed by the effects of a storm, motions may be excited in the pycnocline by the action of forced internal waves. This dissertation deals with experimental and theoretical studies of such motions. During the Arctic Mixed Layer Experiment in the Spring of 1976, manifestations of forced internal waves were observed with a new profiling current meter-CTD system. The device is unique in that it is capable of producing simultaneous, accurate profiles of density and horizontal velocity, repeatedly and at high frequency. Of particular interest are measurements made with the instrument in the upper 80 m of the ocean during a small storm which occurred April 8, 1976. During the storm the isopycnals deflected downward about 2 m and then rebounded and oscillated with periods on the order of 5 to 10 hous. Horizontal velocity perturbations at about the inertial frequency were also excited by the storm. In an effort to explain the observed motions, new theories were developed which deal with the forcing of internal waves by surface stress, atmospheric pressure and buoyancy flux. Solutions are derived for the forced motions as sums of internal wave normal modes. Arbitrary stratification is allowed below the surface mixed layer and the kinematic surface boundary condition is used. Doctoral thesis. Text Arctic Arctic Ocean Beaufort Sea Sea ice Defense Technical Information Center: DTIC Technical Reports database Arctic Arctic Ocean |
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Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Physical and Dynamic Oceanography *INTERNAL WAVES STRESSES VELOCITY DENSITY MEASUREMENT OCEAN CURRENTS THESES TURBULENCE PROFILES MEASURING INSTRUMENTS STORMS SEA ICE BEAUFORT SEA ARCTIC OCEAN Mixed layers(Marine) Pycnocline Arctic Mixed Layer Experiment Forced oscillation |
spellingShingle |
Physical and Dynamic Oceanography *INTERNAL WAVES STRESSES VELOCITY DENSITY MEASUREMENT OCEAN CURRENTS THESES TURBULENCE PROFILES MEASURING INSTRUMENTS STORMS SEA ICE BEAUFORT SEA ARCTIC OCEAN Mixed layers(Marine) Pycnocline Arctic Mixed Layer Experiment Forced oscillation Morison,James Howe Forced Internal Waves in the Arctic Ocean. |
topic_facet |
Physical and Dynamic Oceanography *INTERNAL WAVES STRESSES VELOCITY DENSITY MEASUREMENT OCEAN CURRENTS THESES TURBULENCE PROFILES MEASURING INSTRUMENTS STORMS SEA ICE BEAUFORT SEA ARCTIC OCEAN Mixed layers(Marine) Pycnocline Arctic Mixed Layer Experiment Forced oscillation |
description |
When the surface of an ocean is disturbed by the effects of a storm, motions may be excited in the pycnocline by the action of forced internal waves. This dissertation deals with experimental and theoretical studies of such motions. During the Arctic Mixed Layer Experiment in the Spring of 1976, manifestations of forced internal waves were observed with a new profiling current meter-CTD system. The device is unique in that it is capable of producing simultaneous, accurate profiles of density and horizontal velocity, repeatedly and at high frequency. Of particular interest are measurements made with the instrument in the upper 80 m of the ocean during a small storm which occurred April 8, 1976. During the storm the isopycnals deflected downward about 2 m and then rebounded and oscillated with periods on the order of 5 to 10 hous. Horizontal velocity perturbations at about the inertial frequency were also excited by the storm. In an effort to explain the observed motions, new theories were developed which deal with the forcing of internal waves by surface stress, atmospheric pressure and buoyancy flux. Solutions are derived for the forced motions as sums of internal wave normal modes. Arbitrary stratification is allowed below the surface mixed layer and the kinematic surface boundary condition is used. Doctoral thesis. |
author2 |
WASHINGTON UNIV SEATTLE DEPT OF OCEANOGRAPHY |
format |
Text |
author |
Morison,James Howe |
author_facet |
Morison,James Howe |
author_sort |
Morison,James Howe |
title |
Forced Internal Waves in the Arctic Ocean. |
title_short |
Forced Internal Waves in the Arctic Ocean. |
title_full |
Forced Internal Waves in the Arctic Ocean. |
title_fullStr |
Forced Internal Waves in the Arctic Ocean. |
title_full_unstemmed |
Forced Internal Waves in the Arctic Ocean. |
title_sort |
forced internal waves in the arctic ocean. |
publishDate |
1980 |
url |
http://www.dtic.mil/docs/citations/ADA091046 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA091046 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Beaufort Sea Sea ice |
genre_facet |
Arctic Arctic Ocean Beaufort Sea Sea ice |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA091046 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
_version_ |
1766321414439174144 |