What is the location of seismograph?
The center of the circle will be the location of your seismograph. The epicenter of the earthquake is somewhere on the edge of that circle. Do the same thing for the distance to the epicenter that the other seismograms recorded (with the location of those seismographs at the center of their circles).
Where is the location of earthquake epicenter?
The focus is the place inside Earth’s crust where an earthquake originates. The point on the Earth’s surface directly above the focus is the epicenter.
What is epicentral distance in earthquake?
Most of the damaging earthquakes have shallow focus with focal depths less than about 70km. Distance from epicenter to any point of interest is called epicentral distance.
What are the 3 seismographs needed to locate an epicenter?
Three seismographs are needed. A circle is drawn from each of the three different seismograph locations, where the radius of each circle is equal to the distance from that station to the epicenter. The spot where those three circles intersect is the epicenter (Figure 13.12).
How an earthquake is located by a seismograph?
Seismometers allow us to detect and measure earthquakes by converting vibrations due to seismic waves into electrical signals, which we can then display as seismograms on a computer screen. Seismologists study earthquakes and can use this data to determine where and how big a particular earthquake is.
What is a seismic station?
An individual seismic station consists of a seismometer for sensing ground motion, a clock for determining time, and a recorder for collecting data.
How are the earthquake epicenters distributed on the map?
The earthquakes are mainly distributed along the edges of the platonic plates on the map. Explanation: The colored lines show the plate boundaries that may may past each other leading to an earthquake. The map also differentiates the different movements of the plates like rubbing against each other or moving apart.
What is the importance of determining the location of earthquake epicenter?
The main importance in determining the epicentre is so that the fault that ruptured causing the earthquake can be identified. If the fault is previously unknown (such as the 2010 Canterbury earthquake), then it is important because it means that the hazard models for the area need improvement.
How many epicentral distances must be determined to locate an earthquakes epicenter?
Explainthat at least three stations are necessary to find the epicenter of an earthquake. Also explain that although three stations is the minimum, often seismologists use more than three, and the more they use the more accurate the location of the epicenter becomes.
Is epicentral a word?
The point on the earth’s surface directly above the focus of an earthquake. 2. The focal point of a usually harmful or unpleasant phenomenon or event; the center: stood at the epicenter of the international crisis. ep′i·cen′tral adj.
How many epicentral distances must be determined to locate an earthquake’s epicenter?
At what location does the first motion of an earthquake occur?
The location below the earth’s surface where the earthquake starts is called the hypocenter, and the location directly above it on the surface of the earth is called the epicenter. Sometimes an earthquake has foreshocks.