Laconia is located close to the center of New Hampshire. Laconia is part of Belknap County. Laconia has 20.06 square miles of land area and 6.52 square miles of water area. As of 2010-2014, the total Laconia population is 16,007, which has shrunk 2.46% since 2000. The population growth rate is much lower than the state average rate of 6.90% and is much lower than the national average rate of 11.61%.
Earthquakes generate three types of seismic waves: P (primary) waves, S (secondary) waves and surface waves, which arrive at seismic recording stations one after another. Both P and S waves penetrate the interior of the Earth while surface waves do not. Due to this, P and S waves are known as body waves.
Earthquake waves travel through the Earth in all directions from the focus. The waves moving away from the point where the rocks ruptured cause rock particles to expand and contract like the slinky in the picture. This type of earthquake wave causes rocks to compress and expand as the waves move through all parts of the Earth. Recording seismic waves. Primary waves, are the first to arrive at recording stations. S waves, also produced by all earthquakes arrive a short time after at recording stations.