At the time of earthquake three types of waves are produced from the focus Seismic waves are of three types—P waves, S waves and L waves.
Earthquakes do not kill people, structurally unsound buildings can do. March, 11, ; time: Causes of Earthquake One of the main reasons of the earthquake is plate tectonics which causes tectonic movements in the earth surface. Most of the world earthquakes occur in: It is a basic tenet of the theory of plate tectonics that these deep earthquakes actually define the positions of sub-ducted plates which are plunging back into the mantle beneath an overriding plate.
These zones are isostatically very sensitive zones because they are also the zones of convergent plate boundaries where the Pacific Oceanic plate is being continuously subducted below the American plates.
The earthquakes may also bring about a change in surface drainage by causing landslides and damming of rivers. Loss of Human Lives and Property: It is recommended that in soft grounds where soil-bearing capacity is very poor, a concrete raft- foundation should be adopted for structures.
An earthquake is a major demonstration of the power of the tectonic forces caused by endogenetic thermal conditions of the interior of the earth. Some areas may subside or rise-up due to earthquakes.
Strong seismic events result in the damages of dams and cause severe flash floods. Slope Instability and Failures and Landslides: The S waves travel through solids only and do not pass through liquid media.
Assamand Gujarat Republic day, Essay 4. Doors and windows are provided in alternate positions.
S waves or Secondary waves: The shocks generated by Peruvian earthquake of May, triggered off the collapse of ice caps seated on the peak of high mountain called Huascaran of m height near the town of Yungay in Peru. Though the plains of west Bengal comes under the zone of least damage risk but the devastating severe earthquake of Kolkata of 11 October,killingpeople, puts a question mark against this concept.
When the focus lies beyond the km depth. Self-employed people and employees in the private and public sectors are included under the medical plan. It is a natural disturbance which can be characterized as convulsion or concussion of the ground. Some seismographs detect horizontal motion while others detect vertical motion.
They believed that earthquake occur whenever mother earth become angry with them. The explosive violent gases during the process of vulcanicity try to escape upward and hence they push the crustal surface from below with great force and thus is caused severe earth tremor of high magnitude.
Some of the earthquakes become weak however some of them become very strong with huge force which may shake the earth suface far away from the centre point. The most terrible consequence of it, of course, are thousands of dead, whose number is constantly growing.
The strong tsunami took about 3 hours to strike Tamil Nadu coast. A series of earthquake can occur in the variety of earthquake storm whenever earthquake hit a fault in the clusters.
Rivers change their courses; fissures are opened up in the ground, which may cause springs. The furious tsunami with a height of about 10 m adversely affected 12 countries bordering the Indian Ocean; worst affected areas included Tamil Nadu coast and Andman-Nicobar Islands of India, Sri Lanka, Indonesia and Thailand.
It was centered in Sagami Bay and damaged Tokyo and Yokohama; aboutpeople were killed by the earthquake and its aftermath.Essay # 2.
Causes of Earthquake: There are many causes for earthquakes. Among them tectonic movement of the earth, volcanic eruption, icefall and landslide are the main ones. Tectonic Movement: The material of the interior of the earth gradually contract due to loss of heat by radiation.
The earthquake was caused by an uplift of the sea floor, where the Pacific tectonic plate slides beneath the plate Japan sits on.
We will write a custom essay sample on Earthquake in Japan. Below is an essay on "Earthquake In Japan" from Anti Essays, your source for research papers, essays, and term paper examples.
Earthquake in Japan I have decided to take a closer look at the earthquake that happened in Japan on March 11, Dec 19, · Japan Earthquake Essay On March 11, Japan experienced an earthquake, which has become the most terrible and destructive in the history of this country.
The terrible tragedy in Japan shocked the world’s population, took thousands of lives and has dangerous long-term consequences for people’s lives and for the world economy.4/5(1).
Japan Earthquake Essay. Oct Outline mi-centre.comuction: A. Hook: Japan was hit by the most powerful earthquake in recorded history on March 11, B. Below is an essay on "Earthquake In Japan" from Anti Essays, your source for research papers, essays, and term paper examples.
This was the most vigorous earthquake Japan had ever encountered. Many lives had been lost in this calamitous incident/5(1).Download