Greenland's hiawatha glacier
WebUsing radar data and some geologic detective work, a team of scientists and engineers detected a massive, circular depression beneath the Hiawatha Glacier in northwestern … WebJul 19, 2024 · In 2024, researchers discovered a massive, 19-mile-wide crater concealed beneath the Greenland ice sheet. A March 2024 study used argon-age dating of sand grains to determine that the meteorite impact occurred close to 58 million years ago (Ma). The study, authored by Gavin G. Kenny from the Swedish Museum of Natural History …
Greenland's hiawatha glacier
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WebMar 9, 2024 · The Hiawatha crater was exceptionally well preserved despite glacier ice being incredibly effective at erosion. Its state fueled talk that the meteorite might have hit as recently as 13,000 years... WebNov 14, 2024 · The diameter of an impact crater constrains the kinetic energy of the impactor. The formation of a 31-km-wide impact crater in crystalline target rock requires ~3 × 10 21 J of energy ( 17 ). Assuming that the Hiawatha impactor was iron with a density of 8000 kg m −3 and its impact velocity was 20 km s −1, the required impactor diameter …
WebMay 20, 2024 · 1 Introduction. Recent airborne radar-sounding surveys revealed a 31 km-wide impact crater beneath Hiawatha Glacier, part of the northwestern Greenland Ice Sheet (Kjær et al., 2024).These radar data were collected with a new ultrawideband (UWB) radar sounder that revealed the glacier's bed topography and internal structure in … WebFeb 11, 2024 · Just 114 miles from the newly-found Hiawatha impact crater under the ice of northwest Greenland, lies a possible second impact crater. The 22-mile wide feature …
WebJan 26, 2024 · NASA Greenland Mission Completes Six Years of Mapping Unknown Terrain NASA’s Oceans Melting Greenland airborne mission found that Greenland's glaciers …
WebApr 13, 2024 · From the surface, Hiawatha Glacier looks like any other expanse of glacial ice. But in 2016, researchers flying in a converted DC-3 plane used ice-penetrating radar to peek beneath the icy mass ...
WebNov 15, 2024 · Two views of the Hiawatha crater region: one covered by the Greenland Ice Sheet, the other showing the topography of the rock beneath the ice sheet, including the crater. Credit: NASA/Cindy Starr An international team of researchers, including a NASA glaciologist, has discovered a large meteorite impact crater hiding beneath more than a … grassmen ballymena shopWebNov 14, 2024 · The surface of the ice sheet slowly fades on over the impact crater and we pull away from the Hiawatha glacier showing its location in Inglefield Land in northwest Greenland. The animation ends with a view … chkd oyster point addressWebMar 9, 2024 · No kilometer-thick ice sheet draped Northwest Greenland when the Hiawatha asteroid rammed into Earth surface releasing several million times more energy than an … chkd oyster point labWebJul 23, 2024 · In the pre-impact ice cover model, only the closest ice core, Camp Century, would have a significant accumulation of ejecta material. They went on to note Glacial … grassmen polo shirtWebThe Greenland Ice Sheet is the second largest in the world after the Antarctic Ice Sheet—it stretches over 1,500 miles (2,400 kilometers) from north to south and is nearly 5,000 feet … chkd oysterWebFeb 25, 2024 · According to the journal Science Advances, researchers discovered a 31km crater under Greenland's Hiawatha Glacier.The impact was dated to the Pleistocene, which according to Britannica, stretches from 2,588,000 years ago to ~11,700 years ago – quite a large range.A separate PNAS study analyzing other ice core samples in … grassmen cleaning kitsWebMar 15, 2024 · The Hiawatha crater, which sits under 0.6 mile (1 kilometer) of ice in northwest Greenland, formed 58 million years ago, according to a study published March 9 in the journal Science Advances ... chkd oyster point sports medicine