Deutsch
 
Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT
Zur Ablage hinzufügen
  Lokale TagsFreigabegeschichteDetailsÜbersicht

Freigegeben
Zeitschriftenartikel

Depth dependence of earthquake foci in relation to structure and physical properties of the lithosphere

Urheber*innen

Bormann,  P.
External Organizations;

Bankwitz,  P.
External Organizations;

/persons/resource/ggrue

Grünthal,  Gottfried
2.6 Seismic Hazard and Stress Field, 2.0 Physics of the Earth, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Neunhöfer,  H.
External Organizations;

Schulz,  A.
External Organizations;

Externe Ressourcen
Es sind keine externen Ressourcen hinterlegt
Volltexte (frei zugänglich)
Es sind keine frei zugänglichen Volltexte in GFZpublic verfügbar
Ergänzendes Material (frei zugänglich)
Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar
Zitation

Bormann, P., Bankwitz, P., Grünthal, G., Neunhöfer, H., Schulz, A. (1986): Depth dependence of earthquake foci in relation to structure and physical properties of the lithosphere. - Gerlands Beiträge zur Geophysik, 95, 5, 371-380.


https://gfzpublic.gfz-potsdam.de/pubman/item/item_232400
Zusammenfassung
In recent years more and more data has become available about focal depth of intra-crustal earthquakes as well as structure and distribution of physical and geologic-petrological parameters as a function of depth. This allows us to study the causes for increased earthquake occurrence at certain depth intervals. Besides structural and material inhomogeneities this is mainly controlled by depth and temperature-dependent variations of rheological properties of crustal materials. Intra-crustal earthquakes occur in an intraplate environment almost exclusively in the depth-range 2km < h < 20km with a clear maximum of activity between some 5 to 15km. The petrophysical as well as possible geologic-petrological reasons are discussed. The brittle fracture behaviour of crustal material is strongly controlled by the v"SUB p"/v"SUB s"-ratio. In crustal regions with v"SUB p"/v"SUB s" = or > 1.8 there is obviously no seismic activity. -from Authors