Optical Response of the Atmosphere During the Caribbean Total Solar Eclipses of 26 February 1998 and of 3 February 1916 at Falcón state, Venezuela

作者: Marcos A. Peñaloza-Murillo

DOI: 10.1023/A:1022417600232

关键词:

摘要: An investigation of the optical response atmosphere before, during, and afterthe total solar eclipse 26 February 1998 at Caribbean Peninsula Paraguana (Falcon State) in Venezuela, was made by measuring photometrically intensity sky brightness three strategic directions: zenith, horizon anti-parallel or opposite umbra path, perpendicular to this path. From these measurements, applying an inverse way empirical photometric model, very rough estimations theextinction coefficient, also average depth, were obtained one particular directions. However based on meteorological measurements such as those relative humidity temperature, a different better estimation visual global extinction coefficient (except horizon), considering contribution each component: atmospheric aerosol, water vapour, ozone Rayleigh scattering. It is shown that mostly dependent upon aerosol extinction. In spite strong reduction observed during totality, results show not dark. This confirmed for coefficient. Additionally it estimated took place Falcon State, beginning last century 3 1916, ∼30% darker eclipse, played relevant similar role scattering sunlight totality 1998's. Visual observations event, which length only two bright stars could be seen sky, support both eclipses.

参考文章(58)
Walter Fernández Rojas, Daniel E. Azofeifa Alvarado, José Alberto Villalobos M., El Eclipse total de Sol del 11 de Julio de 1991: Aspectos Generales. San José, CR: Editorial de la Universidad de Costa Rica. ,(1992)
G. V. Rozenberg, Richard B. Rodman, Twilight : a study in atmospheric optics Plenum Press. ,(1966)
Jay Anderson, Fred Espenak, Total solar eclipse of 1995 October 24 Unknow. ,(1994)
G. G Pandit, T. N Mahadevan, P. B Kulkarni, B. K Sapra, Faby Sunny, Atmospheric Characteristics at Trombay relating to the October 1995 Solar Eclipse Indian Institute of Astrophysics, Bangalore. ,(1997)
Jay Anderson, Fred Espenak, Total Solar Eclipse of 1998 February 26 CTIT technical reports series. ,(1996)
F. R. Stephenson, A re-investigation of the 'double dawn' event recorded in the Bamboo Annals Quarterly journal of the royal astronomical society. ,vol. 33, pp. 91- 98 ,(1992)
Bradley E. Schaefer, Atmospheric Extinction Effects on Stellar Alignments Journal for the History of Astronomy. ,vol. 17, ,(1986) , 10.1177/002182868601701003
Bradley E. Schaefer, Astronomy and the limits of vision Vistas in Astronomy. ,vol. 36, pp. 311- 361 ,(1993) , 10.1016/0083-6656(93)90113-X
Glenn E. Shaw, Sky brightness and polarization during the 1973 african eclipse. Applied Optics. ,vol. 14, pp. 388- 394 ,(1975) , 10.1364/AO.14.000388