The ocean tide and waves beneath the Ross ice shelf, Antarctica
Widely spaced tidal gravity records have been used to determine the spatial and temporal variation of the ocean tide beneath the Ross Ice Shelf. Cotidal-coamplitude maps have been drawn for the six greatest harmonic constituents of the tide. These are K, P, O, M, S, and N. The tide is principally di...
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ftvirginiatec:oai:vtechworks.lib.vt.edu:10919/39003 2024-05-19T07:31:31+00:00 The ocean tide and waves beneath the Ross ice shelf, Antarctica Williams, Richard T. Geophysics 1979 v, 204 leaves BTD application/pdf http://hdl.handle.net/10919/39003 http://scholar.lib.vt.edu/theses/available/etd-07282010-020429/ en eng Virginia Tech OCLC# 07811192 LD5655.V856_1979.W54.pdf etd-07282010-020429 http://hdl.handle.net/10919/39003 http://scholar.lib.vt.edu/theses/available/etd-07282010-020429/ In Copyright http://rightsstatements.org/vocab/InC/1.0/ LD5655.V856 1979.W54 Tides -- Antarctica -- Mathematical models Tides – Antarctica Ross Sea Dissertation Text 1979 ftvirginiatec 2024-05-01T01:21:07Z Widely spaced tidal gravity records have been used to determine the spatial and temporal variation of the ocean tide beneath the Ross Ice Shelf. Cotidal-coamplitude maps have been drawn for the six greatest harmonic constituents of the tide. These are K, P, O, M, S, and N. The tide is principally diurnal, the diurnal amplitudes being roughly 3 times longer than the semidiurnals. The range of the tropic tide is about 1 m at the northern extremity of the ice shelf, and can be as great as 2 m in the southeastern part of the region. The diurnal constituents can each be viewed as a wave that propagates towards the southwest across the sea, having an amplitude that is closely related to the thickness of the water-layer beneath the ice. For each of the semidiurnal constituents there is an amphidromic region located within the Ross 5ea near 80° S latitude, 1900 W longitude, and having a clockwise sense of rotation. Theoretical calculations of the tidal current indicate that the semidiurnal and diurnal current constituents have roughly the same amplitude. The semidiurnal current is magnified by near resonance with the inertia current due to the high latitude of the sea. Because of the resonance, calculations of the semidiurnal components of the tidal current are sensitive to the treatment of the retarding effects of the ice shelf and sea floor. Waves having periods shorter than 20 min were observed in the ice shelf. These have been identified as flexural waves that are generated by the action of the ocean swell on the northern edge of the shelf. The observed speed of these waves was predicted within the uncertainty of the measurement by the classical flexural wave theory. Ph. D. Doctoral or Postdoctoral Thesis Antarc* Antarctica Ice Shelf Ross Ice Shelf Ross Sea VTechWorks (VirginiaTech) |
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VTechWorks (VirginiaTech) |
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language |
English |
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LD5655.V856 1979.W54 Tides -- Antarctica -- Mathematical models Tides – Antarctica Ross Sea |
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LD5655.V856 1979.W54 Tides -- Antarctica -- Mathematical models Tides – Antarctica Ross Sea Williams, Richard T. The ocean tide and waves beneath the Ross ice shelf, Antarctica |
topic_facet |
LD5655.V856 1979.W54 Tides -- Antarctica -- Mathematical models Tides – Antarctica Ross Sea |
description |
Widely spaced tidal gravity records have been used to determine the spatial and temporal variation of the ocean tide beneath the Ross Ice Shelf. Cotidal-coamplitude maps have been drawn for the six greatest harmonic constituents of the tide. These are K, P, O, M, S, and N. The tide is principally diurnal, the diurnal amplitudes being roughly 3 times longer than the semidiurnals. The range of the tropic tide is about 1 m at the northern extremity of the ice shelf, and can be as great as 2 m in the southeastern part of the region. The diurnal constituents can each be viewed as a wave that propagates towards the southwest across the sea, having an amplitude that is closely related to the thickness of the water-layer beneath the ice. For each of the semidiurnal constituents there is an amphidromic region located within the Ross 5ea near 80° S latitude, 1900 W longitude, and having a clockwise sense of rotation. Theoretical calculations of the tidal current indicate that the semidiurnal and diurnal current constituents have roughly the same amplitude. The semidiurnal current is magnified by near resonance with the inertia current due to the high latitude of the sea. Because of the resonance, calculations of the semidiurnal components of the tidal current are sensitive to the treatment of the retarding effects of the ice shelf and sea floor. Waves having periods shorter than 20 min were observed in the ice shelf. These have been identified as flexural waves that are generated by the action of the ocean swell on the northern edge of the shelf. The observed speed of these waves was predicted within the uncertainty of the measurement by the classical flexural wave theory. Ph. D. |
author2 |
Geophysics |
format |
Doctoral or Postdoctoral Thesis |
author |
Williams, Richard T. |
author_facet |
Williams, Richard T. |
author_sort |
Williams, Richard T. |
title |
The ocean tide and waves beneath the Ross ice shelf, Antarctica |
title_short |
The ocean tide and waves beneath the Ross ice shelf, Antarctica |
title_full |
The ocean tide and waves beneath the Ross ice shelf, Antarctica |
title_fullStr |
The ocean tide and waves beneath the Ross ice shelf, Antarctica |
title_full_unstemmed |
The ocean tide and waves beneath the Ross ice shelf, Antarctica |
title_sort |
ocean tide and waves beneath the ross ice shelf, antarctica |
publisher |
Virginia Tech |
publishDate |
1979 |
url |
http://hdl.handle.net/10919/39003 http://scholar.lib.vt.edu/theses/available/etd-07282010-020429/ |
genre |
Antarc* Antarctica Ice Shelf Ross Ice Shelf Ross Sea |
genre_facet |
Antarc* Antarctica Ice Shelf Ross Ice Shelf Ross Sea |
op_relation |
OCLC# 07811192 LD5655.V856_1979.W54.pdf etd-07282010-020429 http://hdl.handle.net/10919/39003 http://scholar.lib.vt.edu/theses/available/etd-07282010-020429/ |
op_rights |
In Copyright http://rightsstatements.org/vocab/InC/1.0/ |
_version_ |
1799469375810437120 |