Monitoring of the geomagnetic and geoelectric field in two regions of Greece for the detection of earthquake precursors

G. Vargemezis;  J. Zlotnicki;  G. Tsokas;  B. C. Papazachos;  E. E. Papadimitriou

doi:10.4401/ag-3916

Monitoring of the geomagnetic and geoelectric field in two regions of Greece for the detection of earthquake precursors

Annals of Geophysics ◽

10.4401/ag-3916 ◽

1997 ◽

Vol 40 (2) ◽

Author(s):

G. Vargemezis ◽

J. Zlotnicki ◽

G. Tsokas ◽

B. C. Papazachos ◽

E. E. Papadimitriou

Keyword(s):

Climatic Changes ◽

Earthquake Precursors ◽

Geoelectric Field ◽

The South ◽

Temperature Changes ◽

Central Greece ◽

South Eastern ◽

Precursory Phenomena ◽

Of Greece ◽

High Seismicity

Two magnetotelluric stations have been installed in the South-Eastern Thessaly basin (Central Greece), which have recorded the geomagnetic and geoelectric fields since 1993. The aim is to detect long lasting abnormal changes of the geoelectric field which may be due to impending earthquakes. The geoelectric recordings were checked against the climatic changes such as temperature changes and precipitation and no correlation was observed. Ten anomalies were observed with characteristics similar to seismoelectric signals which have been reported in the literature and thus we can assume that these changes constitute precursory phenomena. The duration of these signals varies from several days to a few weeks. Some of them keep on developing until the occurrence of an earthquake, and others appear like transient changes several days before. The high seismicity of the area where the stations are located creates difficulties in the correlation of the signals with certain shocks.

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Słowiańskie nazwy ‘źrenicy’ w świetle materiałów gwarowych i źródeł historycznych

Studia z Filologii Polskiej i Słowiańskiej ◽

10.11649/sfps.2010.009 ◽

2015 ◽

Vol 45 ◽

pp. 143-174

Author(s):

Janusz Siatkowski

Keyword(s):

Czech Republic ◽

Mixed Type ◽

The South ◽

The Czech Republic ◽

South Eastern ◽

The North ◽

Western Ukraine ◽

Luminous Objects ◽

Black Color ◽

Of Greece

Slavic names of the ‘pupil’ (‘źrenica’) in the light of dialect materials and historic sourcesDespite a considerable mixture of names of “the pupil”, their collateral use and not quite distinct borders of ranges of specified lexemes, it is possible to specify several express, albeit not quite well-defined, areals (map 1).In Russia and in eastern regions of Belarus and Ukraine, the name *z//orčьkъ (// > d) dominates. In the areal of this name, it is possible to define the areal of a separate or collateral occurrence of names *Z//ьrъkъ, more rarely *z//irъkъ (Z > s, ž; // > v) southward and eastward from Moscow, names *ględělьce, *ględělьca and *ględělьcь in the vicinity of Pskov and Novgorod and *čьrnyšь, *čьrnyšьkъ and *čьrnyšьko in the north of Russia.In Poland and in the Czech Republic, *GЪpanьnъka (GЪ > ø) occur, besides, *zьrěnica also occurs in Poland.In Ukraine and in eastern Belarus, *čelověčьkъ dominates, while *čelověčьko is less numerous; in southern Bulgaria, Macedonia and in Slavic settlements on the territory of Greece and Turkey the forms *čELoVěčę, *čELověčьlę and *čELoVěčьčь (EL > ø; V > ø) dominate.In Serbia and Croatia and somewhat in Slovenia and south-western Bulgaria, the name *zěnica prevails.Map 2 (motivation map) shows most visibly two types: from the verbs meaning ‘patrzeć’ („to see”), which occur in the prevailing part of the Slavic territory, and from the words meaning persons and things that are reflected in „the pupil” (‘źrenica’) and are represented in western Ukraine and western Belarus, on the prevailing territory of Poland, in the Czech Republic and Moravia, in the south-eastern part of Slovakia and also in Macedonia, southern Bulgaria and in Slavic settlements on the territory of Greece and Turkey. Both of these types were registered as a certain mixed type, in particular, in eastern Ukraine and eastern Belarus.The names that are motivated by the black color of “the pupil” (‘źrenica’) are found mainly in northern russian and in southern Macedonian dialects; less frequently they appear in the territory of Austria and in Łużyce. Motivation types from the names meaning round, shining and luminous objects, and from the names that are diminutive names of the eye are very sporadic and occur in great dispersion.

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