Scientists are working right now on finding a way to detect the signals of earthquakes with the help of dark
In seismology, researchers are studying the movements of earth before, during, and after an earthquake, with the help of sensors installed underground. Because the installation of such equipment and the expenses involving the required labour, only a limited number of seismic sensors are stset up; therefore data is being lost from unmapped earthquakes.
According to Berkley Lab, there are around 10 million kilometres of fiber optic cable around the globe and 10% of all that is, in fact, dark fiber.
In one of their studies from 2017, the Ajo-Franklin group demonstrated that Distributed Acoustic Sensing (DAS) – a new sensing technology, can be used to measure seismic wavefields by sending short laser pulses across the length of the
Instead of launching their own
Between July 2017 and January 2018 the team observed the speed of waves travelling through the Earth’s surface and even managed to measure the earthquake that happened in Mexico during their observation period. The DAS technology demonstrated that it can do multiple things concomitant, in a limited period of time. The researchers were able to detect low-frequency waves from earthquakes in the distance, as well as higher frequencies from train and trucks in the vicinity of the research site. DAS helped in making the difference between a moving vehicle and an earthquake. The same technology also helps in soil quality characterisation, providing information on