Seismometer Seismometer
In this example, the alert is for the ShakeOut scenario earthquake. Earthquake early warning systems use earthquake science and the technology of monitoring systems to alert devices and people when shaking waves generated by an earthquake are expected to arrive at their location.  The USGS maintains a variety of fault and volcano monitoring instruments around the western United States, including Hawaii. The data from all instruments are transmitted in real time to the USGS in Menlo Park using satellite, radio and telephone telemetry. Measurements can be made to better than 0.1 millibar. Strainmeters for continuous crustal strain monitoring are highly sensitive instruments with precision of less than 1 part per billion (i.e. less than 1 inch in 16,000 miles). They are usually installed in boreholes where surface noise is greatly reduced. Some of the technology that will be used will include : Superconducting antennae and solenoid coils, which will be able to measure miniscule electromagnetic radiation field changes, and detect the present of ELF radiation. Most people imagine earthquakes as violent and unpredictable forces of nature; however, they are simple manifestations of energy in wave-form that may be detected accurately. Scientists who study earthquakes are known as seismologists. They will use seismometers to measure the frequency and amplitude of the seismic waves produced when an earthquake occurs.  Hundreds of small earthquakes are caused as magma rises up through cracks in the Earth's crust. Seismometers are used to detect earthquakes. Temperatures around the volcano rise as activity increases. Thermal imaging techniques and satellite cameras can be used to detect heat around a volcano.  Here is how. Earthquakes are detected using a seismometer. A seismometer, also known as a seismograph, is an instrument that records movements of the ground. It is used to detect seismic waves generated by earthquakes and nuclear explosions. A seismoscope can also be used for the detection of underground movements. It indicates that motion has occurred, but does not give a continuous record of the ground movements. The main body of the technology will be satellites with advanced imagery and detection technology, which will have on them a series of instruments developed for this specific use. Radiation is emitted weeks prior to earthquakes, in the form of infrared radiation and also Extremely Low Frequency radiation. Most people imagine earthquakes as violent and unpredictable forces of nature; however, they are simple manifestations of energy in wave-form that may be detected accurately. Scientists who used a satellite to detect sound waves from the 2011 earthquake in Japan say space-based earthquake detection is possible, albeit some way off. Scientists who used a satellite to detect sound waves from the 2011 earthquake in Japan say space-based earthquake detection is possible, albeit some way off. By Richa Malhotra. We may one day be able to detect earthquakes in remote areas of the Earth from space, say scientists who used a satellite to pick up low-frequency sounds from the earthquake that hit Tohoku, Japan, in March 2011. The researchers report that the satellite is the first seismometer in orbit.
http://earthquake.usgs.gov/research/earlywarning/ http://earthquake.usgs.gov/monitoring/deformation/data/instruments.php http://dev.nsta.org/evwebs/1223/future.htm http://www.answers.com/Q/What_technological_instruments_help_scientists_monitor_earthquakes http://www.bbc.co.uk/schools/gcsebitesize/geography/natural_hazards/managing_hazards_rev1.shtml http://www.buzzle.com/articles/how-are-earthquakes-detected.html http://dev.nsta.org/evwebs/1223/future.htm http://www.scidev.net/global/earth-science/news/satellite-based-earthquake-detection-mooted-1.html
what technology is used to detect earthquakes