Seismologists study earthquakes by looking at the damage that was caused and by using seismometers. A seismometer is an instrument that records the shaking of the Earth's surface caused by seismic ...

successfully used ocean-bottom seismographs—instruments that are placed on the seafloor to record seismic signals generated by the turbidity currents. This innovative approach allowed the ...

"but there is a possibility that later adjustments to the seismograph may even strip this gun of its cloak of secrecy." The new instrument will not only provide prompt and accurate location of ...