The seismogram below shows waves recorded at a seismograph in Illinois from a magnitude 6.8 earthquake that occurred in Morocco on September 8, 2023. The P-wave and S-wave arrival are …

Dec 1, 2025 · The height of the largest wave increases 10 times with each level. So the height of the largest seismic wave of a magnitude 5 quake is 10 times that of a magnitude 4 quake.

The difference in time between the P and S wave arrivals is used to determine how far the seismograph is relative to the earthquake’s location (this is known as the S-P time).

Nov 21, 2004 · Seismograms are used to locate earthquakes, determine the magnitude (size) of earthquakes and explosions, analyze seismic wave propagation, evaluate earthquake hazards, and …

In order to locate the epicenter of this earthquake, you need to estimate the time interval between the arrival of the P and S waves (the S-P interval) on the seismograms from three different stations.

The time, locations, and magnitude of an earthquake can be determined from the data recorded by seismograph stations. The Richter magnitude scale was developed in 1935 by Charles F. Richter of …

The Richter magnitude of an earthquake is determined from the logarithm of the amplitude of waves recorded by seismographs. Adjustments are included for the variation in the distance between the …

Jan 1, 2012 · The focus of the quake with a magnitude of 6.8 lay in the Earth's upper mantle, almost 220 miles below the ocean surface. Such deep temblors rarely cause damage because most of the …

The P wave arrival (the first arriving energy is at about 3 minutes, relative time, followed about 40 s later by the PP arrival. The PP phase is a P wave that reflects from the Earth’s surface once near the …

This can be achieved by using P-wave data to determine magnitude because P-waves arrive first at seismic stations, in many cases several seconds ahead of the more damaging S-waves and surface …