What is the minimum number of seismograph stations?
three stations 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.
Why do you need data from 3 seismographs to find the epicenter of an earthquake?
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. Every earthquake is recorded on numerous seismographs located in different directions.
What is the minimum number of points needed to locate the epicenter of an earthquake quizlet?
– You need a minimum of three seismograph stations to locate the epicenter of an earthquake using a travel-time graph. – Determining the location of the epicenter is sometimes referred to as "triangulation."
What is the Richter scale?
The Richter magnitude scale, also known as the local magnitude (M) scale, assigns a number to quantify the amount of seismic energy released by an earthquake. It is a base-10 logarithmic scale.
How many seismic stations must be used in triangulation?
3 seismic stations Use 3 seismic stations to locate earthquake epicenter The Earthquake Triangulation app provides a simple interactive map where users can estimate the location of an earthquake using the distances between the earthquake and 3 or more seismic stations.
Where are the three seismographs used to find the epicenter of this earthquake located?
The three circles intersect at a single point. This is the earthquake's epicenter (Figure below). Seismographs in Portland, San Francisco, and Salt Lake City are used to find an earthquake epicenter.
What is the minimum number of points needed to locate the epicenter of an earthquake View Available hint’s for part 1 2 3 4?
Three station recordings are needed to locate an epicenter.
What is the epicenter of an earthquake?
The epicenter is the point on the earth's surface vertically above the hypocenter (or focus), point in the crust where a seismic rupture begins.
Is a 10.0 earthquake possible?
No, earthquakes of magnitude 10 or larger cannot happen. The magnitude of an earthquake is related to the length of the fault on which it occurs. That is, the longer the fault, the larger the earthquake.
What is a seismograph Class 8?
A seismograph is an instrument that measures and registers seismic waves that travel through the Earth as the outcome of an earthquake.
How many seismic stations are needed to triangulate an earthquake epicenter?
3 seismic stations Use 3 seismic stations to locate earthquake epicenter The Earthquake Triangulation app provides a simple interactive map where users can estimate the location of an earthquake using the distances between the earthquake and 3 or more seismic stations.
How do you locate an earthquake?
Triangulation can be used to locate an earthquake. The seismometers are shown as green dots. The calculated distance from each seismometer to the earthquake is shown as a circle. The location where all the circles intersect is the location of the earthquake epicenter.
What does a seismogram measure?
A seismogram is the recording of the ground shaking at the specific location of the instrument. On a seismogram, the HORIZONTAL axis = time (measured in seconds) and the VERTICAL axis= ground displacement (usually measured in millimeters).
When an earthquake has a magnitude of 8 on the Richter scale?
Intensity 8: Severe — Damage slight in specially designed structures; considerable damage in ordinary substantial buildings with partial collapse. Damage great in poorly built structures. Fall of chimneys, factory stacks, columns, monuments, walls.
Why is 3 the minimum number of stations necessary to locate an epicenter?
At least 3 earthquake recording stations are required to find the location of the earthquake epicenter. A single recording station can only calculate distance, but not direction; to cover all possibilities, a complete circle is drawn around that station.
How many seismograph stations are needed to plot an earthquake’s epicenter?
Introduction: The epicenter is the point on Earth's surface directly above an earthquake. Seismic stations detect earthquakes by the tracings made on seismographs. Tracings made at three separate seismic stations are needed to locate an earthquake epicenter.
Has there ever been a 9.9 earthquake?
The 1960 Valdivia earthquake and tsunami (Spanish: Terremoto de Valdivia) or the Great Chilean earthquake (Gran terremoto de Chile) on 22 May 1960 was the most powerful earthquake ever recorded. Various studies have placed it at 9.4–9.6 on the moment magnitude scale.
Has there ever been a 9.5 earthquake?
On May 22, 1960, the most powerful earthquake in recorded history—magnitude 9.5—struck southern Chile. The rupture zone stretched from estimates ranging from 500 kilometers (311 miles) to almost 1,000 kilometers (621 miles) along the country's coast.
What is a seismograph Class 7?
Answer: A seismograph is a machine which measures an earthquake. Question 7.
What is a seismogram Class 5?
A seismogram is a graph output by a seismograph. It is a record of the ground motion at a measuring station as a function of time. Seismograms typically record motions in three cartesian axes (x, y, and z), with the z axis perpendicular to the Earth's surface and the x- and y- axes parallel to the surface.
How do seismologists measure earthquakes?
Seismologists study earthquakes by looking at the damage that was caused and by using seismometers. A seismometer is an instrument that records the shaking of the Earth's surface caused by seismic waves. The term seismograph usually refers to the combined seismometer and recording device.
How many seismograms are needed to locate an epicenter?
three Introduction: The epicenter is the point on Earth's surface directly above an earthquake. Seismic stations detect earthquakes by the tracings made on seismographs. Tracings made at three separate seismic stations are needed to locate an earthquake epicenter.
What is class 5 seismograph?
seismograph, instrument that makes a record of seismic waves caused by an earthquake, explosion, or other Earth-shaking phenomenon.
Is a 7.3 magnitude earthquake big?
How Do We Measure Earthquake Magnitude?…Earthquake Magnitude Scale.
| Magnitude | Earthquake Effects | Estimated Number Each Year |
|---|---|---|
| 7.0 to 7.9 | Major earthquake. Serious damage. | 10-15 |
| 8.0 or greater | Great earthquake. Can totally destroy communities near the epicenter. | One every year or two |
What does a 9.5 earthquake feel like?
8:5613:41What a 9.5 mag earthquake looks like- – YouTubeYouTube
How many seismographs are needed to locate an earthquake epicenter?
three Introduction: The epicenter is the point on Earth's surface directly above an earthquake. Seismic stations detect earthquakes by the tracings made on seismographs. Tracings made at three separate seismic stations are needed to locate an earthquake epicenter.
Can there be a 10.0 earthquake?
No, earthquakes of magnitude 10 or larger cannot happen. The magnitude of an earthquake is related to the length of the fault on which it occurs.
What would a 10.0 earthquake do?
A magnitude 10 quake would likely cause ground motions for up to an hour, with tsunami hitting while the shaking was still going on, according to the research. Tsunami would continue for several days, causing damage to several Pacific Rim nations.
Do dogs bark before earthquake?
According to the study, 236 of 1,259 dog owners said they observed strange behaviors, such as neediness, barking, and howling before the quake. Some said their dogs were so restless they even escaped. Sixty percent of these reports happened in the seconds and minutes before the earthquake.
What is a seismograph Class 9?
Seismographs are instruments used to record the motion of the ground during an earthquake. They are installed in the ground throughout the world and operated as part of a seismographic network.