3. With 2 you can get possible locations (where the 2 circles intersect). With the 3rd reading, that circle will intersect the other two circles at one of those 2 candidate locations. See the link for a description.
The movement of seismic waves
At many different earthquake centers. When an earthquake happens the tree nearest earthquake centers record the magnitude and intensity of the seismic waves produced by the earthquake in order to find the origin or epicenter
The energy of the seismic waves that reach the surface is greatest at the epicenter. The most violent shaking during an earthquake however may occur kilometers away from the epicenter. The types of rock and soil around the epicenter determine where and how much the ground shakes.
If the part of the fault has had large earthquakes historically, then this may be a locked section, or seismic gap, where strain is building up for a future big earthquake. If there is no evidence of it having big quakes in the past then it may just not be very active.
It takes 3 stations.
A minimum of three seismic stations must compare results to locate an earthquakes epicenter.
Many earthquakes are concentrated in narrow zones along plate boundaries.
The movement of seismic waves
At many different earthquake centers. When an earthquake happens the tree nearest earthquake centers record the magnitude and intensity of the seismic waves produced by the earthquake in order to find the origin or epicenter
Light Energy, Seismic Energy (Earthquakes) Many More ...
5 days ago
The epicenter is the point on the earth's surface directly vertically above the hypocenter (or focus) point in the crust where a seismic rupture begins.The epicenter is only "far from the center" on very deeply centered earthquakes where the hypocenter (or focus) point in the crust is very far from the surface. Many earthquakes are shallow.The depth of the hypocenter (or focus) point can be categorized as shallow (up to 70 km or 43.5 miles below the surface), intermediate (70 to 300 km), or deep (greater than 300 km or 186 miles).
The energy of the seismic waves that reach the surface is greatest at the epicenter. The most violent shaking during an earthquake however may occur kilometers away from the epicenter. The types of rock and soil around the epicenter determine where and how much the ground shakes.
If the part of the fault has had large earthquakes historically, then this may be a locked section, or seismic gap, where strain is building up for a future big earthquake. If there is no evidence of it having big quakes in the past then it may just not be very active.
That is impossible to tell. Smaller earthquakes occur more frequently, to the extent that the majority of earthquakes are too small to event be felt. Without a sophisticated seismic network, many earthquakes will not even be detected.
Yes. Earthquakes occur most often along fault lines. There are also many different devices (seismograph) that sense seismic waves and can predict earthquakes.
You need to find how many km the earthquake is