A inteligibilidade da palavra em igrejas católicas, através de análises de carácter objectivo e subjectivo
Lencastre, Margarida Maria Mendes de Freitas de Queiroz e
1988-01-01
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71 records were found.
The resonances of the English Channel and Irish Sea are investigated using the methods of Webb (2012a) together with an Arakawa C-grid model of the region under study. In the semi-diurnal tidal band, the high tides of the Bristol Channel and Gulf of St. Malo are shown to be due to two shelf resonances which strongly couple the two regions. In the diurnal band, the response is complicated by the presence of continental shelf waves.
The resonances of the English Channel and Irish Sea are investigated using the methods of Webb (2012a) together with an Arakawa C-grid model of the region under study. In the semi-diurnal tidal band, the high tides of the Bristol Channel and Gulf of St. Malo are shown to be due to two shelf resonances which strongly couple the two regions. In the diurnal band, the response is complicated by the presence of continental shelf waves.
At depths above 1000 m, the currents of the southwestern Pacific are traditionally considered to be dominated by the broad westward flow of the South Equatorial Current, part of the South Pacific subtropical gyre. Results from the OCCAM global ocean model, reported here, indicate that in reality the South Equatorial Current is broken up into a series of zonal jets by the extensive shallow topography associated with islands and reefs. This paper discusses the large-scale structure of the jets and their effect on the temperature and salinity fields. It is shown that some of the jets advect cores of high or low salinity water, which may be used experimentally to identify the jets and their pathways. Comparisons with hydrographic observations show some agreement with the model results but a more detailed experimental program is required.
This paper reviews earlier work and provides new results from a one-dimensional model of the scattering of a tidal wave by a continental shelf. When the continental shelf is many wavelengths wide, a large fraction of the incident tidal energy can propagate from the deep ocean onto the shelf. In contrast when there is a nearby coastline most of the energy is reflected unless the shelf approximately 1/4, 3/4, 5/4 etc wavelengths wide and has a suitable amount of frictional damping. The properties of the reflection coefficient are investigated. It is shown that it can be treated as a function of complex angular velocity, strong absorption of tidal energy being associated with nearby poles in the complex angular velocity plane. Physically the poles correspond to decaying shelf modes, their real component depending primarily on the geometry...
A numerical model is used to investigate the resonances of the Gulf of Carpentaria and the Arafura Sea. The model is forced at the shelf edge, first with physically realistic real values of angular velocity. The response functions at points within the region show maxima and other behaviour which imply that resonances are involved but it is difficult to be more specific. The study is then extended to complex angular velocities and the results then show a clear pattern of gravity wave and Rossby wave like resonances. The properties of the resonances are investigated and used to reinterpret the responses at real values of angular velocity. It is found that in some regions the response is dominated by modes trapped between the shelf edge and the coast or between opposing coastlines. In other regions the resonances show cooperative behaviou...
A numerical model is used to investigate the resonances of the Gulf of Carpentaria and the Arafura Sea, and the additional insights that come from extending the analysis into the complex angular velocity plane. When the model is forced at the shelf edge with physically realistic real values of the angular velocity, the response functions at points within the region show maxima and other behaviour which imply that resonances are involved but provide little additional information. The study is then extended to complex angular velocities, and the results then show a clear pattern of gravity wave and Rossby wave like resonances. The properties of the resonances are investigated and used to reinterpret the response at real values of angular velocity. It is found that in some regions the response is dominated by modes trapped between the sh...
Studies carried out with a one-dimensional model of a continental shelf and deep ocean have shown that the use of a radiational boundary condition doubles the decay rate of the shelf resonances. This note reports on a study using a model of the English Channel and Irish Sea which shows that, in this more realistic model, a radiational boundary condition based on Flather (1976) has a much smaller effect.
