Why is triangulation necessary for an earthquake 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. Every earthquake is recorded on numerous seismographs located in different directions.
How do you triangulate an earthquake epicenter?
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 is the minimum number of seismic stations needed to triangulate an earthquake epicenter?
Three seismographs
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.
What is triangulation and how does it work earthquakes?
Triangulation is a method that uses distance information determined from 3 seismic stations to uniquely locate the earthquake. On a map, circles are drawn around each seismic station. The radius of the circle are scaled to the estimated distance from the station to the earthquake.
How is triangulation used to solve real world problems?
Triangulation is a way of determining something’s location using the locations of other things. It is commonly used by geologists to find the locations of Earthquakes, and is also used to determine spacecraft location.
Why might the triangulation method not always work?
14. Why might the triangulation method not always produce an exact point (other than any measurement errors)? Triangulation assumes that the seismic waves traveled at the same velocities to all three seismic stations.
What are the advantages and disadvantages of triangulation?
What are the pros and cons of triangulation?
- Reduce bias that comes from using a single method, theory, or investigator.
- Enhance validity by approaching the same topic with different tools.
- Establish credibility by giving you a complete picture of the research problem.
Which triangulation system is will not give more accurate results?
Explanation: When compared to primary triangulation, secondary triangulation and tertiary triangulation are having less order which decreases its accuracy. So in order to obtain stable values the formation of number of triangles in a framework increases. 7.
Why triangulation method is important?
Triangulation facilitates validation of data through cross verification from more than two sources. It tests the consistency of findings obtained through different instruments and increases the chance to control, or at least assess, some of the threats or multiple causes influencing our results.
What are the methods of triangulation?
In 1978, Norman Denzin identified four basic types of triangulation: (1) data triangulation: the use of multiple data sources in a single study; (2) investigator triangulation: the use of multiple investigators/research- ers to study a particular phenomenon; (3) theory triangulation: the use of multiple perspectives to …
What are the limitations of triangulation?
Methods triangulation has several weaknesses, including the expense of deploying multiple/mixed methods, the challenges of meshing quantitative and qualitative findings and the varying quality of different studies using different methods.
What is the purpose of triangulation?
Triangulation is a technique to analyze results of the same study using different methods of data collection. It is used for three main purposes: to enhance validity, to create a more in-depth picture of a research problem, and to interrogate different ways of understanding a research problem.
Which of the following is not necessary for reconnaissance process in triangulation?
2. Which of the following is not necessary for Reconnaissance process? Explanation: The usage chain might make the entire process a little bit tedious, so a steel tape is in that place. Theodolite, sextant are used for taking angles, Aneroid barometer for measuring elevations.
What can triangulation method determine?
Triangulation is a surveying method that measures the angles in a triangle formed by three survey control points. Using trigonometry and the measured length of just one side, the other distances in the triangle are calculated.