Tremble after the tremors- EARTHQUAKE Explained
Part of: GS-I- Earthquake (PT-MAINS-PERSONALITY TEST)
The NCR shook seven times in the last 20 days, fuelling fears of a high-magnitude earthquake. Seismologists have ruled out an immediate threat though they insist the region remains at risk of a ‘great’ Himalayan quake
Since May 15, the National Center for Seismology has recorded seven small earthquakes, ranging from 1.8 to 4.5 on the Richter scale, with epicentre
Delhi’s minor tremors
In the wake of the recent series of tremors in Delhi-NCR, Wadia Institute of Himalayan Geology, an autonomous institute of the Department of Science and Technology, has said that such tremors are not unusual in the Delhi-NCR region, but indicate that strain energy is built up in the region.
They have said that since the seismic network is quite good, present micro to minor earthquakes in and around Delhi-NCR could be recorded.
Though our understanding, in te
Previously unknown faults at the foot of the Himalaya discovered
Data from an oil and gas exploration company has now helped geologists discover a series of faults at the foot of the Himalaya.
Sesimic exploration data
The team looked at seismic reflection data, which are routinely collected by exploration companies looking for oil and gas.
In this method, seismic waves are produced by small explosions at multiple sources, and many recorders called geophones record
GS-Paper-1 Geography- Earthquake (PT)
According to a recently published study, researchers have developed a new way to improve the prediction of earthquakes.
Vibrations from an earthquake are categorised as P (primary) and S (secondary) waves. They travel through the Earth in different ways and at different speeds. They can be detected and analysed.
What is an Earthquake?
An earthquake is a natural event which is caused due to release of energy, which generates waves that travel in all directions.
The vibrations called seismic waves are generated from earthquakes that travel through the Earth and are recorded on instruments called seismographs.
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 call
Everything about: Earthquake
What is an Earthquake?
A fault is the sharp break in the crustal rocks. When lithospheric plates move, the surface of the Earth vibrates (release of Energy and the Energy waves travel in all directions). Earthquake is the sudden release of the Energy in Earth’s crust that creates seismic waves.
Energy accumulation site is identified w deformed rocks caused by tension or compression.
The subterranean spot at which rocks beg
Non-uniformity of Himalayas foresees significantly large earthquake events
Scientists have found that the Himalayas are not uniform and assume different physical and mechanical properties in different directions — a property present in crystals that is called ‘anisotropy’.
This could result in significantly large earthquake events in the Himalayas.
The north-west region of India, an area covering Garhwal and Himachal Pradesh, has been hit by four destructive moderate
Seismic Mapping of India
Read about the Earthquake of India and then click here.
A total of ~59% of the land mass of India (covering all states of India) is prone to earthquakes of different intensities. As per the seismic zoning map of the country, the total area is classified into four seismic zones.
Zone V is seismically the most active region, while zone II is the least. Approximately, ~ 11% area of the country falls in zone V, ~18% in zone IV, ~ 30% in zone III and re
Why in News? Earthquake Observatories in India
India is going to have 35 more earthquake Observatories by end of this year and 100 more such Observatories in next five years.
In last six and a half decades since Independence, the country had only 115 Earthquake Observatories but now, there is going to be a quantum leap in the number of Earthquake Observatories in the country.
Indian subcontinent is considered as one of the world's most disaster-prone areas in terms of earthquakes,
Thermocol could be the material of the future for construction of Earthquake resistant buildings, with thermal insulation and could also save energy required to develop construction materials.
Researchers at IIT Roorkee have found that thermocol or Expanded Polystyrene (EPS) is used as a composite material in core of reinforced concrete sandwich, could resist earthquake forces on up to four-storey buildings.
The researchers tested a full-scale building and a number of wall elements constr