27-03-2012, 04:26 AM
I m student and i need earthquack detection fm radio ppt
27-03-2012, 04:26 AM
I m student and i need earthquack detection fm radio ppt
27-03-2012, 09:33 AM
to get information about the topic Earthquake Detection Using FM Radio related topic refer the link bellow
https://seminarproject.net/Thread-earthquake
31-03-2012, 03:43 PM
14-04-2012, 09:11 PM
thank u ..i needed this presentation for my tech fest//
16-04-2012, 11:20 AM
to get information about the topic "free download earthquake detection using fm radio" full report refer the link bellow https://seminarproject.net/Thread-earthquake
01-05-2012, 03:04 PM
09-08-2012, 08:51 AM
:):):):)
actually i wanna know more n reseach upon dat how we can detect earthquake by using fm radio..
09-08-2012, 09:33 AM
to get information about the topic Earthquake Detection Using FM Radio related topic refer the link bellow
https://seminarproject.net/Thread-earthquake
19-08-2012, 02:57 PM
i am in need of ppt
..for the topic earthquake detection using fm radio ...i also need details
20-10-2012, 12:57 PM
i need a ppt presentaion on earthquake detection using fm radio
10-01-2013, 10:50 PM
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11-01-2013, 09:54 AM
to get information about the topic Earthquake Detection Using FM Radio related topic refer the link bellow
https://seminarproject.net/Thread-earthquake
28-02-2013, 03:44 PM
pllz send me the ppt and project reports on sudarshanrdg1[at]gmai.com
21-06-2013, 02:51 PM
EARTHQUAKE DETECTION USING FM RADIO
EARTHQUAKE DETECTION.pptx (Size: 2.09 MB / Downloads: 28) WHAT IS AN EARTHQUAKE ? An earthquake (also known as a quake, tremor or temblor) is the result of a sudden release of energy in the Earth's crust that creates seismic waves. These seismic waves travels through earth’s interior. An earthquake's point of initial rupture is called its focus or hypocenter. The epicenter is the point at ground level directly above the hypocenter. Absolute magnitude is measured in RICHTER or MOMENT MAGNITUDE SCALE and felt magnitude is measured in MERCALLI INTENSITY SCALE. PROPAGATION OF VERY HIGH FREQUENCY WAVES VHF propagation is called Space wave propagation. Space wave propagation has two components-(a)Direct component, (b)Indirect or ground reflected component. Direct component is propagated by two methods (a)Line of sight propagation:-Limited by Curvature of Earth and Height of transmitting and receiving antennas. (b)Scatter propagation:-occurs in ionospheric E-layer due to blobes of air mass and from the ionized trials of meteors ,geomagnetic field variation etc. Usually the VHF wave penetrates the ionosphere and are lost , but due to the high concentration, electrons and ions in the E-layer having vibration frequency greater than the frequency of FM waves scattering occurs. POSSIBILITY OF EARTHQUAKE DETECTION BY OBSERVING THE ANOMALY IN FM Radio echo used to appear one to several times in a day and before two to three weeks of earthquake occurrence. After two to nine days from the last appearance of echo earthquake have occurred. High density plasma in ionosphere E layer over the epicenter before and after earthquake. A co-seismic EM phenomenon has been detected in VHF band. The VHF emissions have been continued for about three hours, after the seismic wave. The starting times of VHF emissions corresponded to arrival times of seismic P- and S-wave, respectively. Forecast of focus location Each receiver is assumed to have a sensitivity region. Mainly depends on CD component. When CD anomalies or CDS anomalies are observed by receiver, sensitive region contain the foci of future earthquake . BT anomalies are observed if the foci of the future earthquake is out of the sensitive regions. BTS anomalies are observed by vicinal receiver in the case the foci of the future earthquake is located close to the border of the sensitive region. The time constant of CD component is about 5-10 min for underground earthquake. Time constant is about 1-2 min when foci of future earthquake is located closer to the sea-shore Therefore the focus location of future earthquakes can be forecasted from the distribution of CD dominance and BT dominance. CONCLUSION 92 Kushida predictions mentioning the possibility of M ≥ 5.5 event, whereas there were 49 M ≥ 5.5 earthquakes in the Japanese region.
27-02-2015, 11:57 PM
...hehehe...sorry
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