What is concurrent triangulation?

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What is concurrent triangulation?

Concurrent Triangulation Characterized by: Two or more methods used to confirm, cross-validate, or corroborate findings within a study. Data collection is concurrent. Purpose: Generally, both methods are used to overcome a weakness in using one method with the strengths of another.

What is analytical 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.

What is the process of triangulation?

In surveying, triangulation is the process of determining the location of a point by measuring only angles to it from known points at either end of a fixed baseline, rather than measuring distances to the point directly as in trilateration.

What is the focus of triangulation?

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.

Why triangulation method is important in determining the 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.

What is the epicenter of the earthquake using the triangulation method?

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 happens to lag time the further you are from the epicenter?

Which of the statements best describes the relationship between lag time and distance from epicenter? The longer the lag time, the closer the distance. The shorter the lag time, the farther the distance. There is no relationship.

Is one seismic station sufficient to determine the position of the 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.

Which type of earthquake will be the most destructive?

Although surface waves travel more slowly than S-waves, they can be much larger in amplitude and can be the most destructive type of seismic wave. There are two basic kinds of surface waves: Rayleigh waves, also called ground roll, travel as ripples similar to those on the surface of water.

What is the difference between an epicenter and a focus?

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. When energy is released at the focus, seismic waves travel outward from that point in all directions.

What is an example of Epicenter?

Epicenter is defined as the central point of something, or the point of the Earth’s surface right above the focus of an earthquake. The central point of an earthquake is an example of an epicenter. A troubled child who is the central point of his parents concern is an example of an epicenter of concern.

What is the difference between P waves and S waves?

P waves travel at speeds between 1 and 14 km per second, while S waves travel significantly slower, between 1 and 8 km per second. The S waves are the second wave to reach a seismic station measuring a disturbance. The difference in arrival times helps geologists determine the location of the earthquake.

At what point is the epicenter of an earthquake located?

epicenter. 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.

What is the epicenter of earthquake?

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. These are smaller earthquakes that occur afterwards in the same place as the mainshock.

What are the steps to finding the epicenter of an earthquake?

Introduction: Steps to Locating the Epicenter of an Earthquake

1. Measure the time that elapses between the arrival of the P (primary) wave and the arrival of the S (secondary) wave to the seismic stations.
2. Using the S-P time, determine the epicentral distance of each station to the earthquake using a travel time curve.

Are earthquakes epicenter randomly distributed?

Earthquake epicentres are not randomly distributed on earth. They occur wherever two tectonic plates meet. The collision of these plates leads to the occurrence of earthquakes and volcanoes. About 75% of world’s largest volcanoes and 90% of earthquakes occur along the Pacific Ring of Fire.

Are volcanoes randomly distributed?

Volcanoes are not randomly distributed over the Earth’s surface. Most are concentrated on the edges of continents, along island chains, or beneath the sea forming long mountain ranges. Major tectonic plates of the Earth.

What is the importance of knowing the 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 a recognised fault, then the earthquake can be used to increase confidence in the hazard modelling for the area.

Are Mountains randomly distributed?

TOPOGRAPHIC PATTERNS Are mountains randomly distributed on the continents, or do they tend to occur in particular patterns (clusters, linear chains, arcs, etc.)? Patterns. Find Mt. Everest, the highest point on earth.