Table of Contents
At least 3 Seismic stations are needed to locate a single point. To locate the epicenter of the earthquake shown on page 1, you will need a drawing compass, a pencil, and a copy of the earthquake travel time graph.
How many seismograph stations are needed to locate the epicenter of an earthquake A 1 B 2 C 3 D 4?
Triangulation is required to determine exactly where it happened. 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.
How many seismograph stations are needed to locate the epicenter of an earthquake Brainly?
At least 3 earthquake recording stations are required to find the location of the earthquake epicenter.
How many seismograph stations are needed to locate the epicenter of an earthquake quizlet?
Data from 3 different stations are required to locate the epicenter of an Earthquake.
How many seismograph stations are needed?
In theory, at least 3 stations are needed in order to locate the epicenter of an earthquake. … The point where these three intersect is the epicenter of the earthquake.
How do you locate the epicenter?
Finding the Distance to the Epicenter Use the time difference between the arrival of the P and S waves to estimate the distance from the earthquake to the station. (From Bolt, 1978.) Measure the distance between the first P wave and the first S wave. In this case, the first P and S waves are 24 seconds apart.
What is the distance of epicenter from the station km?
Measure the difference in arrival times between the first shear (s) wave and the first compressional (p) wave, which can be interpreted from the seismogram. Multiply the difference by 8.4 to estimate the distance, in kilometers, from the seismograph station to the epicenter.
Why are three seismographs needed to locate an earthquake’s epicenter?
Scientists use triangulation to find the epicenter of an earthquake. When seismic data is collected from at least three different locations, it can be used to determine the epicenter by where it intersects. Knowing this helps them calculate the distance from the epicenter to each seismograph.
How often do Magnitude 8 earthquakes occur *?
“Great earthquakes”, magnitude 8 and higher, occur about once a year.
What is the minimum number of seismic stations needed to determine an epicenter location quizlet?
The epicenter of an earthquake is triangulated using data from at least three seismograph stations.
What do you need to locate an epicenter quizlet?
What is the procedure for locating the epicenter of an earthquake? they have to find the difference between the arrival times of the primary and secondary. A circle is drawn around each station. The point where the 3 circles meet is the epicenter.
How many seismographs are there around the world?
Formed in partnership among the USGS, the National Science Foundation (NSF) and the Incorporated Research Institutions for Seismology (IRIS), the GSN provides near-uniform, worldwide monitoring of the Earth, with over 150 modern seismic stations distributed globally.
How many seismic measurements are required to locate the epicenter of an earthquake Weegy?
The amplitude of the waves can be used to determine the magnitude of the earthquake, which will be discussed in a later section.In order to locate an earthquake epicenter, scientists must first determine the epicenter distance from three different seismographs.
How are the earthquake epicenter distributed?
Volcanoes and earthquakes are not randomly distributed around the globe. Instead they tend to occur along limited zones or belts. With the understanding of plate tectonics, scientists recognized that these belts occur along plate boundaries.
What does the magnitude of an earthquake measure?
Magnitude is the most common measure of an earthquake’s size. It is a measure of the size of the earthquake source and is the same number no matter where you are or what the shaking feels like. Intensity is a measure of the shaking and damage caused by the earthquake; this value changes from location to location.
What is the distance of the epicenter from the seismic station in Batangas?
Based on that record, the epicenter of the 5.5 earthquake was located 7 kilometers northwest of Tingloy, Batangas. The earthquake was of tectonic origin.
How do you compute the distance of the epicenter from each of the station using the formula?
Compute the distance of the epicenter from each of the stations using this formula: d= time difference x 100 km 8 seconds where: d= distance km Id= time difference in the arrival time of P-wave and S-wave seconds This formula is suited because 8 seconds is the interval between the times of arrival of the P-wave and S- Sep 14, 2021.
What is the distance of epicenter from Davao?
At 02:11 PM Philippine Standard Time (PST) of 15 December 2019 (Sunday), a strong Magnitude (M) 6.9 earthquake shook the province of Davao del Sur and vicinity. The epicenter of the earthquake is located 9 kilometers northwest of Matanao, Davao del Sur at a depth of 3 kilometers.
What is the fewest number of seismographic stations that must record the arrival time of P and S waves in order for the epicenter of an earthquake to be located?
Three stations are needed in order to “triangulate” the location. To locate the epicenter of an earthquake, scientists must have seismograms from at least three seismic stations.
How do you calculate the SP wave interval?
Epicenter and Amplitude Notes Locate the point on the seismogram where the P wave arrives. Similarly, locate the time of arrival for the S wave. Subtract the P time from the S time to find the S-P interval. Locate this S-P interval time on the S-P graph. Follow this time across the graph until you reach the S-P line.
What are the 3 types of seismic waves and explain how they are different from each other?
There are three major kinds of seismic waves: P, S, and surface waves. P and S waves together are sometimes called body waves because they can travel through the body of the earth, and are not trapped near the surface. A P wave is a sound wave traveling through rock. An S wave is a different beast.
