[:ja]シェーン・キンブロー宇宙飛行士がISSから撮影した、メキシコ湾、ユカタン半島付近、米国東海岸の落雷の様子です。
Enjoy this night time lapse of thunderstorms and clouds as we flew past the Yucatan Peninsula, the Gulf of Mexico, and the east coast of the US. #iss #nasa #space pic.twitter.com/Ty23dalOK3
— Shane Kimbrough (@astro_kimbrough) November 6, 2021
雷は電位差が発生した雲または大地などの間に発生する光と音を伴う放電現象です。主に、上空と地面の間または上空の雷雲内に電位差が生じた場合の放電により起きる、と言われています。雷の発生原理は研究が続けられており、様々な説が論じられていますが、まだ正確には解明されていません。低気圧や前線等の荒天時に発生することが多いですが、台風の際には雷が発生しにくい傾向があります。
地上の様子はこちらです。
参考文献： Shane Kimbrough’s Tweet
地球俯瞰画像を見る： LiVEARTH
[Earthview Wonders] No.1457: Lightning
Astronaut Shane Kimbrough captured from ISS lightnings over Gulf of Mexico, Yucatan Peninsula, and the east coast of the U.S.
Enjoy this night time lapse of thunderstorms and clouds as we flew past the Yucatan Peninsula, the Gulf of Mexico, and the east coast of the US. #iss #nasa #space pic.twitter.com/Ty23dalOK3
— Shane Kimbrough (@astro_kimbrough) November 6, 2021
Lightning is a naturally occurring electrostatic discharge during which two electrically charged regions, both in the atmosphere or with one on the ground, temporarily equalize themselves, causing the instantaneous release of as much as one gigajoule of energy. Lightning causes thunder, a sound from the shock wave which develops as gases in the vicinity of the discharge experience a sudden increase in pressure. Lightning occurs commonly during thunderstorms as well as other types of energetic weather systems, but volcanic lightning can also occur during volcanic eruptions.
Reference: Shane Kimbrough’s Tweet
See earthview photo gallery: LiVEARTH[:]