This allows NUGs to receive a reasonable to excellent price for the energy they produce and ensures that energy generated by small producers won't be wasted. 1  Gas engines for IPPs, www.clarke-energy.com, accessed 11th November 2013.  2 Independent Power Producer (IPP) - Americas Generators.
An earthquake is the shaking of the surface of the Earth, resulting from the sudden release of energy in the Earth's lithosphere that creates seismic waves. Earthquakes can range in size from those that are so weak that they cannot be felt to those violent enough to toss people around and destroy whole cities. The seismicity or seismic activity of an area refers to the frequency, type and size of earthquakes experienced over a period of time. At the Earth's surface, earthquakes manifest themselv
Surface waves move along the earth's surface. Photo is courtesy of Queensland University Advanced Centre for Earthquake Studies, Australia. The term earthquake refers to the ground vibrations that are induced by energy released into the earth during fault rupture. These vibrations are known as seismic waves.Seismometers operating around the globe on a continuous basis record the tiny displacements of the surface that are caused by seismic waves.uch slip occurs for a variety of reasons and typically differs from the steady inter-seismic slip described above (although in some sense, post-seismic slip is simply a subset of inter-seismic slip). A fault that has experienced a significant rupture often continues to accommodate significant slip after the rupture.