According to Smithsonian magazine, the Great Kanto earthquake was caused by a seismic fault line six miles below the floor of Sagumi Bay. Close to noon on September 1, 1923, a 60 square mile portion of the Philippine oceanic plate ruptured and smashed into the Eurasian continental plate. This event produced a burst of tectonic energy that traumatized Japan.Continue Reading
Considered one of the worst natural disasters in Japan's history, the Great Kanto earthquake damaged much of Tokyo and Yokohama. Smithsonian magazine explains that the earthquake's intense jolt triggered large tsunamis and widespread fires. With a death toll of 140,000 and extensive infrastructure damage, the earthquake is thought to have ignited intense nationalist and racist passions, which fueled right wing groups as the country struggled between military expansion and a quest towards democracy.
The initial tremors of the Great Kanto earthquake lasted for 14 seconds, according to Smithsonian magazine. The shaking brought down the majority of buildings in Tokyo and Yokohama, and the cities were unequipped to handle an earthquake of such magnitude. Since building were largely made of wood, intense fires, fanned by strong winds, burned nearly 45 percent of Tokyo to the ground before they were finally quelled two days later.Learn more about Earthquakes
The Tangshan earthquake was caused by the shift of faults located under the city, such as the Tangcheng-Lijiang fault. Northern China has a high level of seismic activity and, in 1974, scientists predicted a large earthquake would hit the region within 2 years. The Tangshan earthquake occurred on July 28, 1976.Full Answer >
Earthquakes produce two types of potentially destructive waves that move through the earth from the point of the fault: primary, or pressure waves and secondary, or shear waves. Primary waves, also called P waves, exert a force of compression and travel through rock at speeds that can exceed 225 mph. Secondary waves, also called S waves, exert a shearing force and travel only half as fast as P waves, but are capable of causing much greater damage when they reach the surface.Full Answer >
The 2008 Sichuan earthquake was caused by seismic activities that focused along the Longmenshan fault, a massive fault structure located between the Eurasian Plate and the Indo-Australian Plate. This caused a rupture along the fault, displacing land by up to 9 meters over approximately 90 seconds.Full Answer >
A reverse fault is a type of dip-slip fault that is formed by compression between two sections of rock. It differs from a normal fault, one that is formed by the stretching of the rock, in that the hanging wall is pushed over the footwall.Full Answer >