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The Seismological Station

 

Today, the GSD operates a modern and automated seismological station that has the capacity to record with accuracy a large number of earthquakes occurring in the Cyprus region (33.5°-37.0° N, 31.0°-35.5° E). The first attempt to establish a seismological station was made in 1984 with the installation of a single seismometer and a recording unit (seismograph) at Mathiatis. With continual expansions and upgrades, the seismological station has been operating since November 1998 with seven substations (Figure S10). The recordings from all substations are made at the GSD office in Nicosia either on computers or some of them in the traditional way on paper (Photo S3), which are used for visual control as well as for easier observation and understanding by pupils, students, and the general public.

 

In the northern part of Cyprus, the first attempt to establish a seismological station was made in 1985 by the Meteorological Department in cooperation with Kandilli Observatory and the Earthquake Research Institute Seismological Service, with the installation of a single seismometer and a recording unit (seismograph) at Pentadaktylos. In the last few years another three stations have been installed in order to cover the northern part of Cyprus from west to east. The data are shared with the GSD, Kandilli Observatory and the Earthquake Research Institute Seismological Service, for more accurate determination of the earthquakes occurring in the Cyprus region.

 

The basic targets and pursuits of the operation of the seismological stations are the following:

 

a)  The collection of trustworthy data for the study of the seismicity of Cyprus. Until the end of the 19th century, data on seismicity were derived from historical records and archaeological findings and cannot be considered as reliable. They do not contribute substantially to the study of the seismicity of Cyprus. From the end of the 19th century until 1984 there is data from the stations of neighbouring countries, which undoubtedly improve considerably the previous situation but they are considered as insufficient both quantitatively and qualitatively for providing answers to many questions that arise in the effort to provide protection to the built environment. These data refer mainly to moderate to strong earthquakes which are limited in number, while the accuracy of the determinations of the epicentral distances is 50 km. The Seismological Stations in Cyprus now offer the possibility to record numerous earthquakes while the accuracy in the determination of epicentres has improved to a few kilometres. As it has already been mentioned above the better knowledge and understanding of the seismicity of Cyprus contributes significantly to the study of the seismic hazard in various parts of Cyprus.

 

b)  Immediate and accurate analysis of the earthquake recordings and communication of the results to international and regional seismological centres. The immediate exchange of information between seismological centres contributes significantly to the improvement of the accuracy in the computation of the parameters of an earthquake, to the better understanding of the phenomenon and consequently to the understanding of the necessary measures for facing the consequences from the continuation of seismic activity.

 

c)  Immediate informing of the relevant authorities and the public for all felt earthquakes. In the case of destructive earthquakes, providing consultative services to the relative authorities with regard to the development of the seismic activity.

 

 

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