The Operation IceBridge scan data were publicly available, allowing Danish glaciologists to identify the depression beneath Hiawatha Glacier.
Sources
- City-size impact crater found under Greenland ice (nationalgeographic.com)
- https://www.nasa.gov/news-release/international-team-nasa-make-unexpected-discovery-under-greenland-ice (nasa.gov)
- https://www.science.org/doi/10.1126/sciadv.aar8173 (science.org)
- https://interestingengineering.com/science/nasa-international-researchers-discover-massive-crater-under-greenland-ice (interestingengineering.com)
- https://news.ku.edu/news/article/2018/11/13/huge-crater-discovered-greenland-impact-rocked-northern-hemisphere (news.ku.edu)
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