Aurora Boreale (Islanda)

11 foto

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Aurora Boreale (Islanda)Islanda


Aurora Boreale (Iceland) (054) Jökulsárlón
Aurora Boreale (Iceland) (054)Jökulsárlón
64° 6′ 48″ N, 16° 15′ 44″ O

An aurora borealis, sometimes referred to as polar lights, northern lights, is a natural light display in the Earth’s sky, predominantly seen in the high-latitude regions (around the Arctic). Auroras are produced when the magnetosphere is sufficiently disturbed by the solar wind that the trajectories of charged particles in both solar wind and magnetospheric plasma, mainly in the form of electrons and protons, precipitate them into the upper atmosphere due to Earth’s magnetic field, where their energy is lost.

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The resulting ionization and excitation of atmospheric constituents emits light of varying color and complexity, most clearly seen at night against a dark sky. The form of the aurora, occurring within bands around both polar regions, is also dependent on the amount of acceleration imparted to the precipitating particles. Precipitating protons generally produce optical emissions as incident hydrogen atoms after gaining electrons from the atmosphere.


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Aurora Boreale (Lofoten)6 foto

Aurora Boreale (Lofoten) (053)
Aurora Boreale (Lofoten) (053)
68° 12′ 34″ N, 13° 29′ 50″ E

Norway is an area normally associated with the appearance of Aurora Borealis. There, under the auroral oval, one can observe the Aurora Borealis very often, sometimes daily. The actual visibility depends primarily on the season and on the weather. [Per saperne di più]

Islanda194 foto

Klifatindur (071)
Klifatindur (071)

Iceland is a Nordic island country of Europe located in the North Atlantic Ocean. It has a population of 332,529 and an area of 103,000 km², making it the most sparsely populated country in Europe. The capital and largest city is Reykjavík.… [Per saperne di più]

Le mie più belle foto del’Islanda65 foto