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As an example, in the magnitude 7.9 Denali earthquake of 2002 in Alaska, the epicenter was at the western end of the rupture, but the greatest damage was about 330 km (210 mi) away at the eastern end. [7] Focal depths of earthquakes occurring in continental crust mostly range from 2 to 20 kilometers (1.2 to 12.4 mi). [8]
Fig.2 : Site effects in Mexico city: recordings from the 1985 earthquake. Seismic site effects have been first evidenced during the 1985 Mexico City earthquake. [4] The earthquake epicenter was located along the Pacific Coast (several hundreds kilometers from Mexico-City), the seismic shaking was however extremely strong leading to very large damages.
Epicentral distance refers to the ground distance from the epicenter to a specified point. [1] Generally, the smaller the epicentral distance of an earthquake of the same scale, the heavier the damage caused by the earthquake. On the contrary, with the increase of epicentral distance, the damage caused by the earthquake is gradually reduced. [2]
The epicenter was located around 17 km east northeast of San Andres in Ragay Gulf with a depth of 33 km (20.5 mi). It was due to the movement of one of the Philippines' largest fault; the Philippine fault system with the focal mechanism corresponding to strike-slip. [4]
UTC time: 1950-08-15 14:09:34: ISC event: 895681: USGS-ANSSComCat: Local date: August 15, 1950 (): Local time: 19:39:34 IST: Magnitude: 8.7 M w [1]: Depth: 15 km (9.3 mi) [1] Epicenter: 1]: Fault: Main Himalayan Thrust: Type: Oblique-slip [2]: Areas affected: Assam, India Tibet, China: Max. intensity: MMI XI (Extreme) [3]: Casualties: 4,800: Main faults of the Himalayas/Tibetan Plateau. The ...
Slumping of the foundations there resulted in severe damage, and occurred as a result of the 15 October main shock, though the Brawley earthquake's epicenter was nearby. At the Imperial County Dump, several instances of ground failure were observed in sedimentary deposits near the top of and parallel to the river bank, and other cracks were ...
The estimated 7.8-magnitude-earthquake had an epicenter in the Garhwal Himalaya near Uttarkashi, British India. Major damage occurred in the Himalaya and Indo-Gangetic Plain, with the loss of between 200 and 300 lives. [2] It is among the largest Himalaya earthquakes of the 19th-century, caused by thrust faulting.
It had a maximum Modified Mercalli intensity of XII (Extreme), based on damage to a road 25 km (16 mi) from the epicenter. [2] Intensity VIII (Severe) was recorded in the Arequipa-Camaná-Tacna area, while VII (Very Strong) was observed in Arica, Chile, where shaking was also felt in the cities Iquique, Calama and Tocopilla, Chile.