Modern seismographs are extremely sensitive pieces of equipment. By recording the slightest movements of laser light or magnets, these devices can detect the smallest of rumbles even when we can't ...

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Monitoring seismic activity all over the world is an important task, but one that requires equipment to be at the site it’s measuring — difficult in the middle of the ocean. But new research from ...

TimesMachine is an exclusive benefit for home delivery and digital subscribers. About the Archive This is a digitized version of an article from The Times’s print archive, before the start of online ...

A NUMBER of workers 1 have noted that distant earthquakes are registered on automatic water stage recorders operated on deep wells. In each of these cases, the time scale was so small that the ...