Climatic Effects Measured During the Eclipse of August 11 1999 in Europe.
スポンサーリンク
概要
- 論文の詳細を見る
During a total eclipse of the Sun the shadow of the Moon, both the umbra and the penumbra, moves across the Earth's surface at supersonic velocities. Interesting meteorological effects arise because of the thermal transient cooling in the shadow. The Royal Observatory of Belgium set up a network of spring gravimeters and 30 meteorological stations to monitor the effect of the eclipse of August 11, 1999 in Europe. The network was centered on the village of Annelles in northern France, within the zone of totality. Six of the stations were clustered within and along the totality path, with other stations distributed north and south of the path. Each meteorological station had sensors to measure luminosity, pressure, temperature and rainfall. Prior to First Contact, around 10:00UT high frequency fluctuations are seen on the luminosity record. Just prior to, and during, totality there is a calming effect, with substantial reduction and disappearance of the variations in luminosity . Shortly after the Third Contact of the eclipse, the luminosity fluctuations (periods of approximately 30 minutes) started again. The ground level temperature records show peak drop of up to 5°C at totality . The temperature fluctuations during the eclipse show strong correlation with the luminosity data. The pressure data exhibits only subtle effects due to the eclipse. Pressure drops of about 0.1 mbar were observed at totality. In the future, these preliminary data treatments could help to achieve a detailed research of pressure effects from the entire network. with comparison with spring and Super conducting gravimeter data, to confirm eventuality of special excited waves by the cooling of atmosphere by the eclipse.
- 日本測地学会の論文
日本測地学会 | 論文
- 月衝突盆地補償メカニズムの比較研究
- 重力異常に基づく糸魚川 - 静岡構造線北部の構造解析
- 台湾・竹崎観測室で観測された非等方性潮汐歪
- 電波無反射室におけるGPS測量用アンテナの位相特性の測定(続報)
- 4way ドップラー計測のロック判定方法と軌道上での検証