According to the findings of an international research team formed by experts from Denmark, Germany and the United States, this diameter is more than 31 kilometers, placing it among the top 25 influence rulers on Earth.
The crater was formed by a crumbling iron meteorite north of Greenland, at a time when it was to be determined and buried under the ice of the Hiawatha glacier.
"The crater is extremely well preserved, and this is surprising because the ice of the glacier is an incredibly efficient corrosive agent that will quickly eliminate the traces of the effect," said Professor Kurt H. Kjaer, Geogenetic Center of the Natural History Museum. Denmark.
Edi This means that the crater must be geologically quite young, “he added.
Researchers estimate that the crater probably occurred during the Pleistocene, perhaps only about 12,000 years ago, towards the end of the last ice age, but more studies are needed to indicate the date.
The first signs of the presence of the crater dates back to July 2015, when the researchers discovered a new map of the topography beneath the Greenland ice sheet, and realized that it was a gigantic circular debris that had not been detected before.
They decided to fly the Hiawatha glacier from the German Institute Alfred Wegener and send a research plane to map the area with a new powerful ice radar developed by the University of Kansas (USA).
Joseph MacGregor, a NASA glycerologist involved in the research, said the state-of-the-art radar exceeded all expectations and imagined depression with incredible details.
Further studies of the sediments carried by the water and the sediments carried by the melt water to verify the radar findings have identified the presence of other elements associated with the effect of quartz, glass and meteorite.
The next step in the investigation is to accurately date the moment of the impact and to determine whether the Earth has affected the climate.