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Rupture processes of the 1999 August 17 Izmit and November 12, Düzce (Turkey) earthquakes

Urheber*innen

Tibi,  R.
External Organizations;

Bock,  G.
External Organizations;

Xia,  Y.
External Organizations;

Baumbach,  M.
External Organizations;

/persons/resource/gros

Grosser,  Helmut
2.1 Physics of Earthquakes and Volcanoes, 2.0 Physics of the Earth, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/online

Milkereit,  Claus
2.1 Physics of Earthquakes and Volcanoes, 2.0 Physics of the Earth, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Karakisa,  S.
External Organizations;

Zünbül,  S.
External Organizations;

/persons/resource/kind

Kind,  Rainer
2.4 Seismology, 2.0 Physics of the Earth, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/zschau

Zschau,  Jochen
2.1 Physics of Earthquakes and Volcanoes, 2.0 Physics of the Earth, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

, 

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227750.pdf
(Verlagsversion), 614KB

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Zitation

Tibi, R., Bock, G., Xia, Y., Baumbach, M., Grosser, H., Milkereit, C., Karakisa, S., Zünbül, S., Kind, R., Zschau, J. (2001): Rupture processes of the 1999 August 17 Izmit and November 12, Düzce (Turkey) earthquakes. - Geophysical Journal International, 144, 2, F1-F7.
https://doi.org/10.1046/j.1365-246x.2001.00360.x


Zitierlink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_227750
Zusammenfassung
We derive the rupture history of the 1999 August 17 Izmit (M-w=7.4) and 1999 November 12 Duzce (M-w=7.1) earthquakes in Turkey from teleseismic body waves using broad-band data of the Global Seismograph Network, aftershock locations and mapped surface breaks. The centroid solutions indicate strike-slip mechanisms for both events. The Izmit earthquake was characterized by rupture propagating predominantly eastwards. It consisted of a main rupture lasting about 25 s followed within 1 min by two more events of M-w=6.9 and M-w=7.0. With the teleseismic data, we could not resolve the westward extent of rupture into the Marmara Sea. However, an upper bound of the seismic moment release west of the epicentre of the Izmit event is estimated to be 1.9 x 10(19) N m, The Duzce earthquake lasted about 14 s and was characterized by a bilateral mode of rupture, in excellent agreement with mapped surface breaks and aftershock locations.