UNIVERSE

Earthquake

27. 12. 2011

Wikipedia

An earthquake (also known as a quake, tremor or temblor) is the result of a sudden release of energy in the Earth's crust that creates seismic waves. The seismicity, seismism or seismic activity of an area refers to the frequency, type and size of earthquakes experienced over a period of time. Earthquakes are measured using observations from seismometers. The moment magnitude is the most common scale on which earthquakes larger than approximately 5 are reported for the entire globe. The more numerous earthquakes smaller than magnitude 5 reported by national seismological observatories are measured mostly on the local magnitude scale, also referred to as the Richter scale. These two scales are numerically similar over their range of validity. Magnitude 3 or lower earthquakes are mostly almost imperceptible and magnitude 7 and over potentially cause serious damage over large areas, depending on their depth. The largest earthquakes in historic times have been of magnitude slightly over 9, although there is no limit to the possible magnitude. The most recent large earthquake of magnitude 9.0 or larger was a 9.0 magnitude earthquake in Japan in 2011 (as of March 2011), and it was the largest Japanese earthquake since records began. Intensity of shaking is measured on the modified Mercalli scale. The shallower an earthquake, the more damage to structures it causes, all else being equal.

At the Earth's surface, earthquakes manifest themselves by shaking and sometimes displacement of the ground. When the epicenter of a large earthquake is located offshore, the seabed may be displaced sufficiently to cause a tsunami. Earthquakes can also trigger landslides, and occasionally volcanic activity.

In its most general sense, the word earthquake is used to describe any seismic event — whether natural or caused by humans — that generates seismic waves. Earthquakes are caused mostly by rupture of geological faults, but also by other events such as volcanic activity, landslides, mine blasts, and nuclear tests. An earthquake's point of initial rupture is called its focus or hypocenter. The epicenter is the point at ground level directly above the hypocenter.

Komentáre

Prehľad komentárov

Nice yearly calendar

(Nilundus, 28. 10. 2022 16:08)

A calendar can be a valuable way in search keeping smell of the time. Single can utility calendars to pay attention to track of important dates and events in at one’s life.

When printed, calendars are restful to disseminate around. They can be occupied as a helpful look back of upcoming events, such as birthdays, graduations, weddings, or holidays. This can ease a личность arrangement in front and circumvent making last-minute plans.

Minimalistic https://t.me/s/printable_calendar - printable calendar 2023 is a scrupulous and peaceful to use tool in pecking order to regard track of your events. It is a brilliant addition to your organization. The printable calendar has the flexibleness to produce all the events that are consequential to you in a person place. Oblige your personal almanac online with the keep from of the printable calendar.

Online:	1
Celkom:	229061
Mesiac:	2248
Deň:	69

Menu

Earthquake

Komentáre

Prehľad komentárov

Nice yearly calendar

counter my position porn videos most outstanding

Test, just a test

The Buy MTP kit Diaries

authenticate my position porn videos most adroitly

dog training houston 77070

4G proxy

Many thanks Quite a lot of advice

wet noses organic training treats for dogs

american bulldog training attack dogs

asist training steps for dogs

littlebeastm training dogs

episcopal lay reader training dogs

in galena heuck training dogs

how to train your dog to sit pretty easily

dog training play dead bang

training dog without crate

kukura dog training

bauch einziehen muskel training dogs

dog training poop eating

Fotoalbum

Posledné fotografie

Vyhľadávanie

Archív

RSS

Štatistiky