41. Different types of ground transmit seismic waves differently. 42. Large seismic waves can interfere with the gravitational waves and may cause shifts in the atoms. 43. "Seismic waves don't pick up voids very well," 44. Another factor is that the old lakebed resonates with certain seismic waves and low frequency signals. 45. The function he proposed to calculate the velocity of seismic waves is called the Mohorovi i law. 46. Thus larger earthquakes give longer seismograms [ as well as stronger seismic waves ] than small ones. 47. Measurements of seismic waves are a source of information on the region that the waves travel through. 48. The internal structure of a volcano can be visualized with a technique known as seismic wave tomography. 49. It's a seismogram, a record of seismic waves recorded by a seismograph 16 miles from the blast. 50. Japan's public broadcaster, NHK, warned that the quake could cause tsunami, or seismic waves in the ocean.
