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How far is an observer from an earthquake epicenter is he or she observed a P wave 8 minutes after the earthquake?
14,4oo km away. i think. check calculations to be sure.
Why do you need data from three seismographs to find the epicenter of an earthquake?
Data from one seismometer can give you the distance to an earthquakes epicentre. When data from two stations is available, by plotting the calculated distances as a circle of known radius around the stations, these two circles will intersect in two places. Add in a third station and all three circles will intersect in the same place which is the epicentre.
What are some possible errors when using a Modified Mercalli scale?
the assigned nember can vary from place to place within the disturbed region depending on the location of the observer with respect to the earthquake epicenter. In addition some witnesses of the earthquake might exaggerate how bad thing were during the earthquake and some witnesses might not agree on what happened during the earthquake.
Why is the intensity value of an earthquake more meaningful than magnitude to a nonscientist?
The strength (more correctly termed magnitude) of an earthquake is a measurement of the energy released when the earthquake occurs. The intensity however is derived based on the perceived level of ground shaking at a specific location and is a function of the amplitude of seismic waves at a given point and the damage they cause. The damage caused is in turn related to the local ground conditions and the specific construction techniques followed in the area. Therefore for earthquakes of equal magnitudes, the location of the earthquake's epicentre in relation to centres of population is important. A high magnitude earthquake that occurs far from a populated area will do less damage than an lower magnitude earthquake in very close proximity to a populated area. As such the earthquake would have a lower magnitude but a higher intensity. Secondly, ground motion and the amplitude of seismic waves is strongly dependent on the medium through which they travel. Seismic waves in hard rock masses (e.g. granite) have lower amplitudes than those that travel through soft ground such as sediments and so a building constructed and founded on hard rock is less likely to be damaged. As such a lower magnitude earthquake affecting structures founded on softer sediments may ultimately cause more damage than a higher magnitude earthquake affecting structures founded on hard rock. Again this would mean that in this specific case the earthquake of equal or lower magnitude would have a potentially greater effect on structures founded on soft soils and so the the intensity would be higher. For more information, please see the related question.
What is the opposite from remote sensing?
The opposite of remote sensing is close-up sensing, where data is collected from objects or phenomena in close proximity to the sensor or observer. This type of sensing involves direct contact or nearness to the subject being observed, as opposed to remote sensing which involves collecting data from a distance.
How far is an observer from an earthquake epicenter is he or she observed a P wave 8 minutes after the earthquake?
14,4oo km away. i think. check calculations to be sure.
What actors and actresses appeared in Observer Observed - 2000?
The cast of Observer Observed - 2000 includes: Takahiko Iimura as himself
How far from an earthquake epicenter is an observer who measured a difference of 8 min 40 s in the arrival times of p and s waves?
The time difference between the arrival of P (primary) and S (secondary) waves at a seismic station is directly related to the distance from the earthquake epicenter. In this case, the 8 minutes and 40 seconds delay corresponds to the time it took for the S waves to arrive after the P waves. Using the standard average velocities of P and S waves (about 6 km/s and 3.5 km/s respectively), we can calculate the distance to be approximately 34.6 kilometers from the epicenter.
Concealing the observer can be used to minimize the?
Concealing the observer can be used to minimize the bias that may be introduced when the observer's presence affects the behavior of those being observed. It can help to ensure that the behavior being observed is natural and unaffected by the observer's presence, leading to more accurate results. Additionally, it can also protect the privacy and confidentiality of the individuals being observed.
What are the release dates for Margaret Mead An Observer Observed - 1998 TV?
Margaret Mead An Observer Observed - 1998 TV was released on: USA: 26 March 1998
How is a lunar and solar eclipse alike?
Both lunar and solar eclipses are the result of positioning 3 astronomical bodies (earth, sun and moon) in a straight line relative to the observer. A solar eclipse is observed when the sun, moon, and earth are positioned in a straight line with an observer on the earth. A lunar eclipse is observed when the sun, earth, and moon are in a straight line with an observer on the earth. A lunar eclipse, as observed by an observer on the earth would appear as a solar eclipse as observed by an observer on the moon.
Why do you need data from three seismographs to find the epicenter of an earthquake?
Data from one seismometer can give you the distance to an earthquakes epicentre. When data from two stations is available, by plotting the calculated distances as a circle of known radius around the stations, these two circles will intersect in two places. Add in a third station and all three circles will intersect in the same place which is the epicentre.
Why the observed frequency is greater than the frequency of the source?
The observed frequency can be greater than the frequency of the source due to the Doppler effect, where the relative motion between the source and observer causes a shift in the frequency of the wave. When the source is moving towards the observer, the observed frequency is higher, and when the source is moving away, the observed frequency is lower.
How can observer's paradox ' be overcome?
The observer's paradox can be overcome by blending in with the environment or situation being observed, which can lead to more authentic and natural behavior from individuals. Additionally, building rapport and trust with the individuals being observed can help minimize the impact of the observer's presence. Employing techniques such as camouflage, discretion, or utilizing technology for remote observation can also reduce the influence of the observer's presence on behavior.
What is the observed change in the frequency of a wave when either the source or observer is moving?
When either the source or the observer is moving, there is a change in the frequency of the wave observed, known as the Doppler effect. If the source is moving towards the observer, the frequency appears higher (blueshift); if the source is moving away, the frequency appears lower (redshift). The same principle applies if the observer is moving instead of the source.
Is it true that a syndrome can be observed only by the patient and not by others?
A syndrome is a collection of signs and symptoms. Those signs and symptoms can be observed by the patient or an outside observer.
Is it true a syndrome can be observed only by the patient and not by others?
A syndrome is a collection of signs and symptoms. Those signs and symptoms can be observed by the patient or an outside observer.
