Szókincs fejlesztés: Super-Rare Moonbow
To see the Northern Lights? That’s one thing. To see a ‘moonbow’ during a big display? That’s a very rare occurrence, but it’s exactly what happened Monday night in the remote village of Abisko in Lapland, northern Sweden.
Captured by Northern Lights experts at Lights Over Lapland in a spectacular display, moonbows are the opposite to rainbows. To see one during the dancing green lights (the result of charged particles from the sun colliding with nitrogen and oxygen atoms) is good luck indeed, but there are ways to maximize your chances.
What is a moonbow?
A rainbow is caused by reflection, refraction and dispersion of light in water droplets, which causes the whole spectrum of light to appear in the sky in an arc. A moonbow, which is also known as a lunar rainbow, works in the same way, except for the fact that it is moonlight (itself sunlight reflecting off the moon) that passes through water in the air.
For a moonbow to appear, the moon has to be relatively bright, and on Monday it was an 86% lit waxing gibbous moon, just a few days before full moon.
“It was a unique experience for me and I’ve been photographing the Northern Lights every winter for the last 10 years,” said Chad Blakeley, founder of Lights Over Lapland, who spotted the phenomenon in Abisko, Sweden, with his guide Chris Hodgson.
The capture was lucky. “We have also set up an Aurora webcam giving our community a live feed of images of the night sky, and Northern Lights, over Abisko,” said Blakeley. It was while reviewing the images on the webcam that the moonbow developing through the Northern Lights was spotted.
Where is Abisko?
Abisko in Sweden is at a latitude of 68° N, well within the Arctic Circle. That makes it an ideal place to see the winter phenomenon of the Northern Lights (also called the aurora borealis) in the northern hemisphere. Although they can appear at any time of year, the long polar nights make the September-March period the most fruitful time to visit the area, which also includes Alaska, northern Canada, northern Russia, and Scandinavia.
How to see a moonbow and the Northern Lights
It’s largely about luck, though there are some locations where moonbows are more common. It’s all about humidity and the amount of water in the air, which makes waterfalls a good place to go moonbow-hunting. At the mighty Skógafoss waterfall in southern Iceland, spray often produces a moon-bow on or near full moon. It’s also south-facing, which makes this a great place to put a camera and point it north, from where displays of the Northern Lights are common.
rare occurrence – ritka előfordulás
remote village – eldugott falu
spectacular display – csodálatos látvány
to collide – összeütközni
reflection – tükröződés
refraction – fénytörés
dispersion – szétszóródás
droplets – cseppek
spectrum of light – fényspektrum
arc – ív
phenomenon – jelenség
latitude – szélességi fok
northern hemisphere – északi félteke
common – gyakori
humidity – páratartalom