北極光的知識(shí)(英文版)-資料下載頁(yè)
2025-06-23 07:44本頁(yè)面
【正文】 two kinds of Northern Lights prediction: statistical and realtime ones. The former is based on a large amount of observations of Northern Lights at different latitudes during several years. From these statistics we can say what is the probability of the occurrence of Northern Lights during the course of year.According to the statistics piled(搜集) by the Finnish Meteorological (氣象的) Institute, four nights out of five are illuminated (照亮) by Northern Lights in Northern Lapland, providing that the sky is free enough from clouds. On the coast of the Arctic Ocean in North Norway one can see Northern Lights almost every night. Even in South Finland, say Helsinki, one can see them but much more seldom。 in Helsinki only one night out of 20.The latter prediction is based on a spaceweather monitoring system either by groundbased devices or satellites watching the spaceweather conditions around the earth. When the monitoring devices, such as magnetometers (地磁儀) or particle detectors(檢波器) in a satellite, show certain deviations (偏差) from the normal situation, one can expect that a space weather storm is approaching in a few hours.The skill of realtime prediction is, unfortunately, rather low。 we cannot make predictions for several days like forecasting normal weather. The reason for this shorting is that we do not fully understand the plicated processes, starting from the sun and ending in the nearspace of the earth. Therefore, more spaceresearch is needed for better forecasts. (662 words)New Wordshalo [39。heil?u] n. (日月等的)暈，暈圈nitrogen [39。naitr?d??n] n. 氮neon sign [39。ni:,?n sain] n. 廣告霓虹燈vacuum [39。v230。kju?m] n. 真空voltage [39。v?ultid?] n. 電壓discharge [dis39。t?ɑ:d?] v. 放電ionize [39。ai?naiz] v. 使離子化 電離terrestrial [ti39。restri?l] a. 地球(上)的variation [,v??ri39。ei??n] n.【天文學(xué)】變差wondrous [39。w?ndr?s] a. 令人驚奇的，奇異的，奇妙的swirl [sw?:l] v. 打轉(zhuǎn)。 彎曲盤(pán)旋substorm [s?b39。st?:m] n. 【物理學(xué)】磁層亞暴〔地球磁層中的一種擾亂〕pile [k?m39。pail] v. 匯集，編輯。 搜集(資料)meteorological [,mi:ti?r?39。l?d?ikl] a. 氣象的，氣象學(xué)(上)的illuminate [i39。lju:mineit] v. 照亮，照明magnetometer [,m230。gni39。t?mit?] n. 地磁儀detector [di39。tekt?] n. 檢波器，指示器deviation [,di:vi39。ei??n] n. 偏向，偏差Proper NamesScandinavia 1. 斯堪的那維亞半島2. 北歐Siberian 西伯利亞的。來(lái)自西伯利亞的Alaska 美國(guó)阿拉斯加州Canada 加拿大Greenland 格陵蘭島(北美東北的一大島名,屬丹麥)Norway 挪威13
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