Watch this video on the NASA Goddard YouTube channel.
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\r\rNow, a NASA scientist and her colleagues have used anomalies in Greenland's crustal magnetic field to derive its geothermal heat flux, allowing them to effectively peer beneath Greenland's thick ice sheet and into the crust itself. What they found was a thermal track in Greenland's bedrock that records the motions of the North American tectonic plate over geologic time.
\r\rThis finding helps scientists to better understand the movement of Greenland, as it was slowly pushed over the hotspot that is now located under neighboring Iceland. It also serves as a reminder that nothing stands still over geologic time, and that even the largest landmasses are constantly being reshaped by our dynamic planet.
Learn more about this finding.", "items": [], "extra_data": {} }, { "id": 325910, "url": "https://svs.gsfc.nasa.gov/13025/#media_group_325910", "widget": "Single image", "title": "", "caption": "", "description": "This map of geothermal heat flux under the Greenland ice sheet was derived from anomalies in the island's crustal magnetic field. Warmer areas coincide with the northwest movement of Greenland over the present-day Iceland hotspot. The black line indicates the hotspot's relative path, beginning underneath Ellesmere Island approximately 100 million years ago, passing beneath Greenland for tens of millions of years, and ending underneath Iceland today.", "items": [ { "id": 245778, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 401481, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a013000/a013025/Greenland_Hotspot_Preview_2_print.jpg", "filename": "Greenland_Hotspot_Preview_2_print.jpg", "media_type": "Image", "alt_text": "This map of geothermal heat flux under the Greenland ice sheet was derived from anomalies in the island's crustal magnetic field. Warmer areas coincide with the northwest movement of Greenland over the present-day Iceland hotspot. The black line indicates the hotspot's relative path, beginning underneath Ellesmere Island approximately 100 million years ago, passing beneath Greenland for tens of millions of years, and ending underneath Iceland today.", "width": 1024, "height": 576, "pixels": 589824 } }, { "id": 245777, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 401482, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a013000/a013025/Greenland_Hotspot_Preview_2.jpg", "filename": "Greenland_Hotspot_Preview_2.jpg", "media_type": "Image", "alt_text": "This map of geothermal heat flux under the Greenland ice sheet was derived from anomalies in the island's crustal magnetic field. Warmer areas coincide with the northwest movement of Greenland over the present-day Iceland hotspot. The black line indicates the hotspot's relative path, beginning underneath Ellesmere Island approximately 100 million years ago, passing beneath Greenland for tens of millions of years, and ending underneath Iceland today.", "width": 1920, "height": 1080, "pixels": 2073600 } } ], "extra_data": {} }, { "id": 325911, "url": "https://svs.gsfc.nasa.gov/13025/#media_group_325911", "widget": "Basic text", "title": "For More Information", "caption": "", "description": "See [NASA.gov](https://www.nasa.gov/feature/goddard/2018/nasa-scientist-reveals-details-of-icy-greenland-s-heated-geologic-past)", "items": [], "extra_data": {} } ], "studio": "gms", "funding_sources": [ "ESE" ], "credits": [ { "role": "Scientist", "people": [ { "name": "Yasmina Martos", "employer": "University of Maryland College Park" } ] }, { "role": "Producer", "people": [ { "name": "Dan Gallagher", "employer": "USRA" }, { "name": "Jefferson Beck", "employer": "USRA" } ] }, { "role": "Animator", "people": [ { "name": "Ernie Wright", "employer": "USRA" }, { "name": "Dan Gallagher", "employer": "USRA" } ] }, { "role": "Science writer", "people": [ { "name": "Lonnie Shekhtman", "employer": "ADNET Systems, Inc." } ] }, { "role": "Narrator", "people": [ { "name": "Dan Gallagher", "employer": "USRA" } ] }, { "role": "Project support", "people": [ { "name": "Rich Melnick", "employer": "KBR Wyle Services, LLC" } ] }, { "role": "Support", "people": [ { "name": "Aaron E. 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