Download EARTHQUAKE IN POLAND

An earthquake – a
sudden release of energy
strains stored in the Earth's
crust. About 20-30% released
energy creates seismic waves
that reach the surface of the
Earth.
epicenter
picenter
Seismic
waves
hypocenterhypoc
enter
waves
An earthquake's point of initial
reputure is located in the
depth of the earth and is
called its focus or hypocenter.
The epicenter is the point at
ground level directly above
the hypocenter.
EARTHQUAKES IN POLAND
Zbigniew Zwoliński
Instytut Paleogeografii i Geoekologii, Uniwersytet im. Adama Mickiewicza, Poznań
Earthquakes rarely happen in Poland.
The most frequently places that earthquakes appear:
 coal mines
 mountain caves (Sudety Mountains, KrakowskoCzęstochowska Upland)
Large earthquakes in the area of Poland occured about 150200 mln years ago.
The last earthquake took place in 2001
in Bełchatów. It was of magnitude 4,7
on Richter scale. This earthquake didn't
cause any serious damage, furniture
and floors were shaking, walls cracked
in several buildings.
Silesia is the place in Poland where
earthquakes occur most frequently and
some of them are almost magnitude 4.
In Poland there are two main areas where the
earthquakes occur:
Góry Kaczawskie, Przedgórze Sudeckie, Nizina Śląska,
- Wał Trzebnicki i Nizina Wielkopolska wzdłuż linii Jelenia
Góra-Leszno
-
- Kotlina Oświęcimska, Wyżyna Śląska i Wyżyna KrakowskoCzęstochowska wzdłuż linii Oświęcim-Herb
Niniejszy projekt został zrealizowany przy wsparciu finansowym
Wspólnoty Europejskiej w ramach Programu Comenius.
Treści samego projektu lub materiałów nie odzwierciedlają
stanowiska Komisji Europejskiej czy Agencji Narodowej w danej
sprawie,
a w związku z tym ani Komisja Europejska,
ani Agencja Narodowa nie ponosi za nie odpowiedzialności.