Assessment Of The Seismoactive Layers And Features Of The Albanian Earth's Crust.

Abstract

Accurate assessment of seismoactive layers represents large interests for recognition of real depth of seismic energy generation.The database of this study are relocated earthquakes of period 2001-2010 that are in considerable numbers, and due to the digital equipment records errors in determining of the depths are less than 3 km. Depth of generating earthquakes represent interest for seismoactive studies especially in seismic hazard assessment. Shallow earthquake with low energy causes higher damage in buildings than a deep earthquake with higher energy. In this study we present the determination of fault zones and low speed zones, which enable us for correct interpretations of Geodynamic phenomena of the Earth's crust. We can say that, these layers are promoters of seismic activity in Albania and can explain mobility of the earth's crust blocks and generating earthquakes from this movement. Most seismic events across our country have occurred in middle and upper crust of the earth. Based on the depths of earthquakes data is showed that the seismoactive layer in Albania earth crust has the bottom in the depth of about 20-25 km. These results are first steps towards more detailed geodynamic and seismotectonic analysis. In conclusion the hypocenter of earthquakes in the territory of Albania and its surrounding earth crust are explaned with active fault zones and lower velocity zones.