Winds
Mostrando 13-24 de 167 artigos, teses e dissertações.
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13. Comparative study of tall building response to synoptic and non-synoptic wind action
Abstract Until the beginning of the 21st Century, the characteristics of wind for purposes of structural analysis and design, as reflected in wind codes worldwide, were based on the behavior of wind currents in the vicinity of the ground surface observed in so-called synoptic events. It was only recently recognized that the latter are not the only cause of w
REM, Int. Eng. J.. Publicado em: 2018-07
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14. Effects of salinity on the physiology of the red macroalga, Acanthophora spicifera (Rhodophyta, Ceramiales)
ABSTRACT Salinity is an important abiotic factor since it is responsible for the local and/or regional distribution of algae. In coastal regions, salinity changes with prevailing winds, precipitation and tide, and particularly in extreme intertidal conditions. Acanthophora spicifera is a red seaweed that occurs in the supratidal region in which changes in ab
Acta Bot. Bras.. Publicado em: 21/09/2017
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15. Behavior and identification of ephemeral sand dunes at the backshore zone using video images
ABSTRACT The backshore zone is transitional environment strongly affected by ocean, air and sand movements. On dissipative beaches, the formation of ephemeral dunes over the backshore zone plays significant contribution in the beach morphodynamics and sediment budget. The aim of this work is to describe a novel method to identify ephemeral dunes in the backs
An. Acad. Bras. Ciênc.. Publicado em: 01/09/2016
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16. Tidal and sub-tidal sea level variability at the northern shelf of the Brazilian Northeast Region
ABSTRACT A characterization of the sea level variability at tidal and sub-tidal frequencies at the northern shore of the Brazilian Northeast shelf for the period 2009-2011 is presented. The sea level data used was obtained from the Permanent Geodetic Tide Network from the Brazilian Institute of Geography and Statistics for the Fortaleza gauge station. Local
An. Acad. Bras. Ciênc.. Publicado em: 25/08/2016
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17. Interannual Variability of Precipitation for the Centro de Lançamento de Alcântara in ENSO-Neutral Years
ABSTRACT: The interannual variability of precipitation in El Niño/Southern Oscillation-neutral years was studied for the Centro de Lançamento de Alcântara region. Monthly precipitation, sea surface temperature, wind at 925 hPa and outgoing longwave radiation data from various gridded datasets for the 1951-2010 period (60 years) were used. The data groupin
J. Aerosp. Technol. Manag.. Publicado em: 2015-09
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18. ONDAS DE MONTAÑA EN LA CAPA LÍMITE PLANETARIA DE LA REGIÓN ANDINA VENEZOLANA
Dynamic and thermodynamic conditions of the planetary boundary layer of the Venezuelan Andean region for the generation of mountain waves are evaluated. The Froude number is calculated by relating the static stability in the presence of orographic supported vertical wind profiles, diagrams and thermodynamic analysis of satellite images. It is found that when
Rev. bras. meteorol.. Publicado em: 2015-09
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19. The Sensitivity of Wind Forecasts with a Mesoscale Meteorological Model at the Centro de Lançamento de Alcântara
ABSTRACT: The sensitivity of the planetary boundary layer (PBL) parameterizations is investigated using the hybrid Fifth Generation Penn State University/National Center for Atmospheric Research (NCAR) Mesoscale Model (MM5) and its results were compared with observations from two field campaigns held during the dry and wet seasons at the Centro de Lançament
J. Aerosp. Technol. Manag.. Publicado em: 2015-06
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20. Aerospace Vehicle Development Applications of Atmospheric Thermodynamic Inputs
ABSTRACT: Aerospace engineering has always had the need for various natural environment parameters to be used as inputs in research and engineering analyses used in the design and development of aircraft and launch/reentry vehicles. Although winds are indeed the main natural environment parameter used as inputs in vehicle design, the thermodynamic atmospheri
J. Aerosp. Technol. Manag.. Publicado em: 2014-03
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21. Short-term stability of estuarine benthic assemblages: are storms pattern-defining events?
Storms, associated with strong winds and heavy rains, are often the most severe physical disturbances in shallow coastal areas causing instability to sedimentary environments. We hypothesized herein that if storms influence short-term assemblage structure of macrofauna, then assemblages should change after storms, while remaining relatively stable over calm
Zoologia (Curitiba). Publicado em: 2013-06
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22. Ocorrência de ventos fortes no estado do Paraná : gênese e impactos
The knowledge of climatic conditions is essential to socioeconomic activities, especially for agricultural and urban planning. Thus has the objective of this work to present a study of winds in the state of Paraná, which was established by calculating and analyzing daily, monthly and yearly mean wind speed, relative frequency, distribution of the accumulate
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/08/2012
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23. Influence of tides and winds on fishing techniques and strategies in the Mamanguape River Estuary, Paraíba State, NE Brazil
Este trabalho foi desenvolvido junto a duas comunidades de pescadores artesanais: Barra de Mamanguape e Tramataia, Nordeste do Brasil. O objetivo foi estudar o conhecimento e a percepção dos pescadores artesanais sobre a classificação das marés e dos ventos bem como as técnicas e estratégias de pesca. A metodologia empregada envolveu várias técnicas
Anais da Academia Brasileira de Ciências. Publicado em: 17/07/2012
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24. Performance and radial distribution profiles of a variable flow rate sprinkler developed for precision irrigation
Variable rate sprinklers (VRS) have been developed to promote localized water application of irrigated areas. In Precision Irrigation, VRS permits better control of flow adjustment and, at the same time, provides satisfactory radial distribution profiles for various pressures and flow rates are really necessary. The objective of this work was to evaluate the
Scientia Agricola. Publicado em: 2012-04