Though Earth's innermost core is solid, new research suggests that it hosts a lot of variation.
Earth's solid inner core may not be solid after all — at least not all the way through. Instead, it’s a hodgepodge patchwork of solid and liquid that reaches all the way to the center.
"A long time ago the inner core grew really fast," Koper said."It reached an equilibrium, and then it started to grow much more slowly. Not all of the iron became solid, so some liquid iron could be trapped inside." There is no way to access the core directly, so Koper and his team used data from 20 seismometers set up to measure earthquake waves and monitor for nuclear-weapons testing. They focused on waves triggered by earthquakes of magnitude 5.7 or above, which are large enough to vibrate down to the inner core, sending a faint echo back to the seismometer. There were 2,455 such earthquakes in the dataset.
Österreich Neuesten Nachrichten, Österreich Schlagzeilen
Similar News:Sie können auch ähnliche Nachrichten wie diese lesen, die wir aus anderen Nachrichtenquellen gesammelt haben.
Earth sees third straight hottest day on record, though it's unofficial: 'Brutally hot'One climate scientist called the marks more 'evidence ... that global warming is pushing us into a hotter future.'
Weiterlesen »
Cleveland leaders support fireworks ban even though they admit it's tough to enforceSome local cities continue to be left with a tough choice — should they follow current Ohio law allowing legal fireworks use on certain days of the year, or should they ban them altogether?
Weiterlesen »
Therapeutic Riding of Tucson: Healing though the human-horse connectionThis July, KGUN 9 is shining the spotlight on TROT: Therapeutic Riding of Tucson for our monthly Giving Project.
Weiterlesen »
Dolly Parton doesn't want to leave 'soul on Earth' with AIThe singer was in London promoting he soon-to-be-released album 'Rockstar' when she was asked about living on through artificial intelligence.
Weiterlesen »
Earth has just experienced the hottest day we have ever seenHeatwaves across the US, Europe and Canada, combined with El Niño weather conditions, saw average global air temperature breach 17°C (62.6°F) on 3 July - the hottest ever recorded.
Weiterlesen »