Generation of inertia-gravity waves by a time-dependent baroclinic wave in the laboratory
A novel technique is used to visualise and measure a baroclinically unstable flow in a two-layer, rotating annulus experiment in the laboratory with very high resolution in space and time. It was found that small-scale, high-frequency waves were generated in certain preferred locations within the fl...
| Main Authors: | , , |
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| Format: | Journal article |
| Language: | English |
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1999
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| _version_ | 1826275617245495296 |
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| author | Lovegrove, A Read, P Richards, C |
| author_facet | Lovegrove, A Read, P Richards, C |
| author_sort | Lovegrove, A |
| collection | OXFORD |
| description | A novel technique is used to visualise and measure a baroclinically unstable flow in a two-layer, rotating annulus experiment in the laboratory with very high resolution in space and time. It was found that small-scale, high-frequency waves were generated in certain preferred locations within the flow by a baroclinic wave undergoing periodic amplitude vacillation. These fast waves have been investigated in terms of their dispersion relation and shown to be consistent with inertia-gravity waves, generated in association with geostrophic adjustment. Phase-portrait analyses of these experiments indicate that the resulting vacillatory behaviour of the large-scale flow remains consistent with low-dimensional dynamics, despite the generation of these small-scale inertia gravity waves. |
| first_indexed | 2024-03-06T23:01:29Z |
| format | Journal article |
| id | oxford-uuid:6248eee0-da57-47fd-8966-631c6d1e8cf8 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T23:01:29Z |
| publishDate | 1999 |
| record_format | dspace |
| spelling | oxford-uuid:6248eee0-da57-47fd-8966-631c6d1e8cf82022-03-26T18:05:16ZGeneration of inertia-gravity waves by a time-dependent baroclinic wave in the laboratoryJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:6248eee0-da57-47fd-8966-631c6d1e8cf8EnglishSymplectic Elements at Oxford1999Lovegrove, ARead, PRichards, CA novel technique is used to visualise and measure a baroclinically unstable flow in a two-layer, rotating annulus experiment in the laboratory with very high resolution in space and time. It was found that small-scale, high-frequency waves were generated in certain preferred locations within the flow by a baroclinic wave undergoing periodic amplitude vacillation. These fast waves have been investigated in terms of their dispersion relation and shown to be consistent with inertia-gravity waves, generated in association with geostrophic adjustment. Phase-portrait analyses of these experiments indicate that the resulting vacillatory behaviour of the large-scale flow remains consistent with low-dimensional dynamics, despite the generation of these small-scale inertia gravity waves. |
| spellingShingle | Lovegrove, A Read, P Richards, C Generation of inertia-gravity waves by a time-dependent baroclinic wave in the laboratory |
| title | Generation of inertia-gravity waves by a time-dependent baroclinic wave in the laboratory |
| title_full | Generation of inertia-gravity waves by a time-dependent baroclinic wave in the laboratory |
| title_fullStr | Generation of inertia-gravity waves by a time-dependent baroclinic wave in the laboratory |
| title_full_unstemmed | Generation of inertia-gravity waves by a time-dependent baroclinic wave in the laboratory |
| title_short | Generation of inertia-gravity waves by a time-dependent baroclinic wave in the laboratory |
| title_sort | generation of inertia gravity waves by a time dependent baroclinic wave in the laboratory |
| work_keys_str_mv | AT lovegrovea generationofinertiagravitywavesbyatimedependentbaroclinicwaveinthelaboratory AT readp generationofinertiagravitywavesbyatimedependentbaroclinicwaveinthelaboratory AT richardsc generationofinertiagravitywavesbyatimedependentbaroclinicwaveinthelaboratory |