️<unk>️<unk>️<unk>️  Scientists are listening in on earthquakes to create stunning marble-like simulations of the Earth's interior.<unk> Scientists are listening in on earthquakes to create stunning marble-like simulations of the Earth's interior.<unk> ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ ️<unk>️<unk>️<unk>️<unk>️<unk>️ Computer simulations use the speed of seismic waves from earthquakes to reveal the existence of subterranean structures.<unk> Computer simulations use the speed of seismic waves from earthquakes to reveal the existence of underground structures. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ The resulting "synthetic seismograms" were compared to real seismograms, and the differences fed back into the model to improve it.<unk> The resulting "synthetic seismograms" were compared to real seismograms, and the differences fed back into the model to improve it. Researchers do this repeatedly, comparing data with simulations and extracting differences.<unk> Researchers do this repeatedly, comparing data with simulations and extracting differences. <unk> <unk> <unk> ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ Professor Tromp has so far looked at seismic waves from 3,000 earthquakes of magnitude 5.5 and greater, which were recorded at thousands of seismographic stations worldwide. These stations make recordings, or seismograms, that detail the movement produced by seismic waves, which typically travel at speeds of several miles per second and last several minutes. We are specifically interested in the structure of mantle upwellings and plumes,<unk>said Professor Tromp,<unk>but much of it will be investigating the images for unusual...
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