arrival time-travel time
focus is the origin of an earthquake.
The point of origin of an Earthquake within the earth is known as the hypocentre. It can also be called the focus.Directly above this on the surface is the earthquake's epicenter.
The place or origin is the epicentre.
The point of origin of an Earthquake within the earth is known as the hypocentre. It can also be called the focus.Directly above this on the surface is the earthquake's epicenter.
To calculate an earthquake's starting time, seismologists compare seismograms and note the differences in arrival times of P and S waves.
focus is the origin of an earthquake.
2:46PM
The origin of an earthquake is called the epicenter.
According to The United States Geological survey, the origin time for the first (8.9 magnitude) earthquake in Japan was 2:46PM JST, and 12:46AM ET.
The point of origin of an Earthquake within the earth is known as the hypocentre. It can also be called the focus.Directly above this on the surface is the earthquake's epicenter.
The epicenter.
The place or origin is the epicentre.
The point of origin of an Earthquake within the earth is known as the hypocentre. It can also be called the focus.Directly above this on the surface is the earthquake's epicenter.
To calculate an earthquake's starting time, seismologists compare seismograms and note the differences in arrival times of P and S waves.
The focus
Focus
The point of origin of an earthquake is called the hypocentre or focus. The epicenter is the point on the surface directly above the focus.