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Items tagged with: auroratuesday

Nitrogen Fringe

Green is the most common colour seen during auroral displays. It's produced when charged solar particles collide with oxygen molecules at altitudes of 100 to 300 km.

Sometimes the lower edge of an aurora will have a pink tinge, which is produced by ionised nitrogen at altitudes below 100 km.

On this November night, we saw it during an intense KP7 geomagnetic storm. Berufjörður in eastern Iceland.

#AuroraTuesday #NorthernLights #aurora #AuroraBorealis #Iceland #Photography

A colour photo of a night sky above a body of water. The shores of the fjord are lined on both sides by ranges of snow-capped mountains, lit by moonlight from behind the viewpoint. The foreground is out of shot except for an area of yellow grass heads. On the left shore is a lit building. The sky is full of stars including part of the Ursa Major asterism. From behind and above the mountains on the left and stretching across the photo are bands of green aurora. Some brighter bars are standing in the streams, and the colours are reflected in the water surface. On the left at the bottom of a strong arc of aurora is a pink edge below the green. This is the nitrogen fringe.
#photography #northernlights #aurora #iceland #auroraborealis #auroratuesday

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