Earthquake-resistant construction
Earthquake-resistant construction, the fabrication of a building or structure that is able to withstand the sudden ground shaking that is characteristic of earthquakes, thereby minimizing structural damage and human deaths and injuries. Suitable…
LATERAL RESISTING SYSTEMS
Lateral resisting systems Many design teams want to implement a lateral force resisting system that is both performance-based and cost effective. Each lateral resisting system has its own advantages and…
How to evaluate, manage and mitigate earthquake risk
The evaluation of the seismic risk is considered essential to define strategic urban and emergency planning management actions and should be based on the analysis of the buildings, the exposed…
Seismic Instruments Information
Seismic instruments are used to measure low-frequency ground motion caused by earthquakes. They detect the seismic waves created by subsurface ruptures and convert ground motions into electronic signals which are…
Major Historical Earthquakes
Major historical earthquakes are listed chronologically in the table. Notable earthquakes in historyyearaffected areamagnitude*intensity*approximate number of deathscommentsc. 1500 BCEKnossos, Crete, Greece X One of several events that leveled the capital of Minoan…
Magnitude versus Intensity
Magnitude and Intensity measure different characteristics of earthquakes. Magnitude measures the energy released at the source of the earthquake. Magnitude is determined from measurements on seismographs. Intensity measures the strength of shaking produced by…
The Nature Of Earthquakes
Causes of earthquakes Earth’s major earthquakes occur mainly in belts coinciding with the margins of tectonic plates. This has long been apparent from early catalogs of felt earthquakes and is even more…
Causes and characteristics of Earthquakes
Earthquakes are vibrations in the Earth's crust that cause shaking at the surface. They are highly unpredictable and often occur suddenly without warning. As yet, we have no way of fully…
Seismic Wave Propagation
To break an object (say a plastic ruler) produced a clicking sound or sound waves that move through the air. In the same way when we throw a stone into…
Introduction to Engineering Seismology
Introduction · The Earth beneath our feet usually feels solid and firm. Yet a million times each year (an average of once every thirty seconds) somewhere around the world the ground…
