Essays on Aftershocks

A powerful 8.8 magnitude earthquake ripped through central Chile on the fateful morning of 27th February 2010. The epicenter was 100 kilometers north-northwest of Chile. The devastation was massive and economic and ecological impacts were debilitating. This paper attempts to present a detailed report on the aftershocks of the earthquake. A comprehensive discussion is expected to impart a holistic understanding of various consequences of this natural disaster. Chilean earthquake, marked as the 5th strongest earthquake since 1900, significantly altered geographical boundaries. The city of Concepcion shifted around three meters to the west, and the capital Santiago moved eleven inches ...

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An earthquake is any seismic event that causes seismic waves. These can be caused by human activity or natural causes. For example, fracking often causes earthquakes which are human caused. Earthquakes often shake or displace the ground or surface of the earth near the epicenter and if the displaced earth is under the ocean, it will usually cause a tsunami. Most earthquakes are caused by geological faults but they can also be caused by landslides, mine blasting, and volcanic activity. Earthquakes are measured by overserving seismometers that are set up across the globe in strategic places for ...

2011 Tohoku Earthquake and Tsunami

Introduction

The Tohoku earthquake that occurred in the Pacific Ocean on 11th March, 2011 at a shallow depth of 32 kilometers is by far the largest earthquake ever recorded in the Japanese history and the fifth largest in the world. The earthquake was of 9.0 magnitude with its epicenter located 130 kilometers off Sendai, Honshu, the largest city in the Tohoku region. This earthquake set off devastating tsunami waves travelling like a jet plane at the speed of 700 kilometers an hour (Sorkhabi, 2011). The waves that reached the altitude of 40.5 meters travelled up to 10 ...

The incidences of landslides and earthquake in the areas around Washington Bay Area have been on the rise due to the nature of the rocks that make up the structures around these places. The torrential rains and the earthquakes have instilled fear among the residents from the regions within and around the weak fault line areas. It has, therefore, taken the interest of the risk analysts to create awareness on the looming risks that the residents around this place may encounter. Despite the fact that national standards for tracking landslide hazards are non-existent, ABAG has generated local maps that ...

An earthquake results from a sudden energy release in the earth’s crust that causes a seismic wave which in turn causes shaking of the ground and leads to devastating occurrences.

Areas with greatest concentration of earthquakes:

Although limits do not exist to the probable magnitude of earthquakes, the largest in historic times as noted by: Debora, 2012 was slightly above a magnitude of 9.0 which occurred in Japan in 2011. Areas with greatest concentration of earthquakes in the US include: Alaska, California, Hawaii, Nevada, Washington, Idaho, Wyoming, Montana, Utah and Oregon

Reasons for greatest concentration of earthquakes in these areas:

Aftershocks: areas which have previously experienced earthquakes are more prone to earthquakes because the ground here ...