This Presentation Gives The Brief Introduction Of Seismology And Geological Hazards

1. SEISMOLOGY AND
GEOLOGICAL
HAZARDS
SUBMITTED BY : MANGAL SINGH
MAYANK CHATURVEDI
KUNAL ABHISHEK
NIDHI DHAKAD
KARAN SINGH

2. CONTENTS COVERED
• Seismology definition and its types.
• What are Earthquakes.
• Classification of Earthquakes.
• Earthquake measuring instruments.
• Geological hazards .
• Environmental Impact.
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3. SEISMILOGY
A science that deals
with earthquakes and
with artificially
produced vibrations of
the earth.
SEISMIC WAVES
A wave of energy that is
generated by an earthquake or
other earth vibration and that
travels within the earth or along
its surface
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4. • .
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6. WHAT ARE EARTHQUAKES?
• . A tremor of the surface of the Earth, sometimes
severe and devastating, which results from shock
waves generated by the movement of rock masses
deep within the Earth, particularly near
boundaries of tectonic plates.
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7. CLASSIFICATION OF EARTHQUAKE
• Earthquakes are usually classified on the basis:
*Causes of origin; *Depth of focus
*Intensity and magnitude of earthquake
ON THE BASIS OF FOCAL DEPTH
The focal depth of an earthquake is the depth from the earth’s
surface to the region where an earthquake’s energy originates
(the focus).
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9. EARTHQUAKE MEASURING
INSTRUMENTS
• SEISMOMETERS
Instruments that detect
seismic waves
• SEISMOGRAPHS
Record intensity, height
and amplitude of
seismic waves
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10. GEOLOGICAL HAZARDS
DEFINATION:-
A geologic hazard is one of several types of
adverse geologic conditions capable of causing
damage or loss of property and life.
These hazards consist of sudden phenomena and
slow phenomena: Sudden phenomena include:
avalanches like earthquakes,landslides etc.
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12. ENVIRONMENTAL IMPACT OF
GEOLOGICAL HAZARDS.
1. EARTHQUAKE.
2. LANDSLIDES.
3. ROCK FALL
4. FOREST FIRE
……………..And many more:-
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13. EARTHQUAKE
• An earthquake (also known as a quake, tremor or
tremblor )is the shaking of the surface of the
Earth, resulting from the sudden release of
energy in the Earth's lithosphere that
creates seismic waves.The seismicity or seismic
activity of an area refers to the frequency, type
and size of earthquakes experienced over a period
of time. The word tremor is also used
for non-earthquake seismic rumbling.
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14. RESULT OF EARTHQUAKE
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15. LAND SLIDES
A landslide, also known as a landslip or mudslide,[citation
needed] is a form of mass wasting that includes a wide
range of ground movements, such as rockfalls and deep
failure of slopes.
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16. ROCK FALL
• A rockfall is a fragment of rock (a block) detached
by sliding, toppling, or falling, that falls along a
vertical or sub-vertical cliff, proceeds down slope
by bouncing and flying along ballistic trajectories
or by rolling
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17. FOREST FIRE
• A forest fire is an uncontrolled fire occurring in
nature. Sometimes, the forest fire is so large
that it takes a long time for the fire fighting
crews to gain control over the situation.
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18. SOURCES
• NPTEL Lectures
• http://nptel.ac.in/courses/105105106/36
• https://en.wikipedia.org/wiki/Geologic_hazards
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