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35 minute green flash observed at Little America on 16 October 1929: a retrospective study

机译:回顾性研究:1929年10月16日在小美国观察到35分钟的绿色闪烁

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On 16 October 1929 five members of the Byrd Expedition 1 observed an intermittent 35 min green flash at the Little America station (latitude-78.57 degrees) in Antarctica. The flash was the result of strong atmospheric refraction, likely associated with a subcritical Novaya Zemlya mirage. This paper examines the constraints placed on the observation by the Earth-Sun orbital kinematics. It is found that the length of the observation cannot be explained solely by the slowness of the setting rate of the Sun, nor the time required just before the beginning of the Antarctic summer for the top of the Sun to set, reach its relative minimum position at the horizon, and then rise back up again. The observed length of the effect, however, is consistent with the Sun effectively setting twice and rising twice during the observation, with the first effective rising being the result of the observers climbing up the radio towers at the Little America station in order to keep the top of the Sun in view. (C) 2014 Optical Society of America
机译:1929年10月16日,伯德探险1号的五名成员在南极洲的小美洲站(纬度78.57度)观察到了35分钟的间歇性绿色闪光。闪光是强烈的大气折射的结果,可能与亚临界Novaya Zemlya海市associated楼有关。本文研究了地球-太阳轨道运动学对观测的约束。发现观测的长度不能仅由太阳落山速度的缓慢来解释,也不能仅从南极夏季开始之前太阳落山到其相对最小位置所需的时间来解释在地平线上,然后再次上升。但是,观测到的这种效应的持续时间与太阳在观测期间有效地两次设置并两次升起是一致的,第一次有效的升起是观察者爬上Little America电台的无线电塔以保持其活动的结果。视线上方的太阳。 (C)2014年美国眼镜学会

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    《Applied optics》 |2015年第4期|共10页
  • 作者

    Lock James A.;

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