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A NASA-led team of scientists found another way to observe its might. By closely watching satellite imagery in the aftermath of the tsunami the earthquake created, scientists made the first direct observation of tsunami waves causing icebergs to break off an Antarctic ice shelf. Multiple icebergs broke off of the Sulzberger Ice Shelf, 8,000 miles from the earthquake's epicenter, after the sea swell from the tsunami reached the ice. The first swell took about 18 hours to reach the shelf and was only about a foot high by then. But it caused enough flex in the floating tongue of ice to let loose two large icebergs and several smaller ones that had a combined surface area of two Manhattan islands. Scientists had suspected this could happen, but in this case quickly and correctly predicted where the tsunami swell would hit and then began watching satellite imagery vigilantly. When NASA and European satellite images revealed what they had been looking for, tide data and other models helped confirm that only the tsunami could have been the cause. || ", "release_date": "2011-09-06T00:00:00-04:00", "update_date": "2023-05-03T13:53:39.435979-04:00", "main_image": { "id": 483554, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a010800/a010816/577700main_SulzASAR2011.MAR.16_after.jpg", "filename": "577700main_SulzASAR2011.MAR.16_after.jpg", "media_type": "Image", "alt_text": "This European satellite imagery helped prove that a tsunami can make an impact a hemisphere away.", "width": 1068, "height": 801, "pixels": 855468 } } ], "sources": [], "products": [], "newer_versions": [], "older_versions": [], "alternate_versions": [] }