Very hard to find a penguin if use the default image satellite because this animal is too small. However, penguins gather to eight months in the frozen sea, and those that accumulate dirt looks like a reddish brown marks on the frozen sea, so easily found.
The study colony is published by the magazine Global Ecology and Biogeography. "We're mapping one of our camp on the frozen sea, and we know there pengyin colony nearby," said Peter Fretwell, an expert on the geography of the British Antarctic Survey told the BBC.
"I use satellite images as a background map and see there are reddish brown spots on one possible location of the lake yan g king penguin colony." "This discovery happened because a few months before we make a mosaic of satellite images of Antarctica, so we can look back and find all existing colonies."
By comparing the satellite images that have a dot it with the location of the colony that was already known, the team successfully found 10 colonies of penguins that were previously unknown, and six colonies were already known but recently moved some distance away.
Six colonies of penguins that have been known before now completely disappeared. "We know that king penguins are very dependent on the frozen sea to breed - such as polar bears depend on sea ice to hunt. Although the frozen sea is quite stable, we are aware that in recent decades the frozen sea view will be reduced. We need know the location and number before we can conclude how much they are threatened by climate change, "said Fretwell.
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