Earthquakes are a common occurrence, rumbling below Earth's surface thousands of times every day.
A landslide is a disaster involving elements of the ground, including rocks, trees, parts of houses, and anything else which may happen to be swept up. The position between two large continental plates (the European and African) and various micro-plates of the Mediterranean Sea results in highly active seismicity all over the peninsula.The first map of seismicity of the Mediterranean area and an extensive research on earthquakes in Italy was published in 1857 by the Irish engineer - and self educated geologist - Robert Mallet under the title "Great Neapolitan Earthquake- The First Principles of Observational Seismology". The magnitude of an earthquake is conventionally reported on the Richter scale, with magnitude 3 or lower earthquakes being mostly imperceptible and magnitude 7 causing serious damage over large areas. The 2010 earthquake in Haiti is an example of how natural disasters tend to hit poor people the hardest. Saving human lives and limiting material losses in natural disasters have been the main focus of research at the International Centre for Geohazards.


But since they strike seldom, fortunately, tsunamis represent a smaller danger than earthquakes, for example.
Landslides can be caused by an earthquake, volcanic eruptions, or general instability in the surrounding land. Earthquakes, mass movements above or below water, volcanic eruptions and other underwater explosions, landslides, large meteorite impacts comet impacts and testing with nuclear weapons at sea all have the potential to generate a tsunami. It uses material from the Wikipedia articles: Natural Disasters and those mentioned in the body of the article itself.
These points, the epicentre of an earthquake, were not randomly distributed, but found in "seismic belts" following the Apennine Mountains.Earthquakes mark the history of the area surrounding L'Aquila and the province of Abruzzo. Mallet got interested in earthquakes in 1830 by a drawing in a natural sciences book, displaying two stone columns twisted by an earthquake in Calabria.


During my research on glaciers, studying old maps, photography and reports on the former extent of these features, I became interested in history, especially the development of geomorphologic and geological concepts by naturalists and geologists. The local prefecture damaged by the earthquake, emblem of the situation in Italy, image from Wikipedia-User TheWiz83 May 7, 2009.In rural areas the "core" of most of the historic buildings consisted of local material, like stone, superimposed by cement constructions or supplementary floors of recent age.



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