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Items tagged with: auroraborealis

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

Aurora over Angel Rocks near Fairbanks, Alaska in late April. Only about a month until it's dark enough here to see the lights again, and I'm making plans to chase them in some pretty cool places this year.

More aurora: photos.lwpetersen.com/Gallerie…

#alaska #auroraborealis #hiking

Bright green curtains of aurora borealis fill most of a deep blue night sky, swirling and streaming diagonally from the upper left toward the horizon. The brightest band forms a sharp ribbon of vivid green edged with pink and magenta, folding back on itself like drapery, while fainter rays fan out to the right in soft vertical streaks. A few stars show through the glow. Along the bottom, a low ridge of snow-covered mountains catches faint light, and the dark silhouette of a rocky outcrop with a few spruce trees rises in the lower right corner. A thin band of pale purple twilight lingers just above the mountains.

Aurora Borealis - Lee Petersen Photography

Lee Petersen offers prints and wall art from images of Alaska landscapes, aurora borealis, wildlife, glaciers, and more. Travel, Adventures, and Life in Alaska.
photos.lwpetersen.com
#hiking #alaska #auroraborealis

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