Influence of Releasing Step-Overs on Surface Fault Rupture and Fault Segmentation: Examples from the 17 August 1999 Izmit Earthquake on the North Anatolian Fault, Turkey

2002 ◽  
Vol 92 (1) ◽  
pp. 19-42 ◽  
Author(s):  
W. Lettis
Keyword(s):  
North Anatolian Fault ◽  
Fault Rupture ◽  
Fault Segmentation ◽  
Izmit Earthquake ◽  
The North

scholarly journals A 3000-year record of surface-rupturing earthquakes at Günalan: variable fault-rupture lengths along the 1939 Erzincan earthquake-rupture segment of the North Anatolian Fault, Turkey

2013 ◽  
Vol 55 (5) ◽  
Author(s):  
Jeffrey George ◽  
Aurelia Hubert-Ferrari ◽  
Koen Verbeeck ◽  
David Garcia-Moreno ◽  
Ulas Avsar ◽  
...  
Keyword(s):  
North Anatolian Fault ◽  
Earthquake Rupture ◽  
Fault Rupture ◽  
The North

Palaeoseismology of the North Anatolian Fault near the Marmara Sea: implications for fault segmentation and seismic hazard

2009 ◽  
Vol 316 (1) ◽  
pp. 31-54 ◽  
Author(s):  
Thomas Rockwell ◽  
Daniel Ragona ◽  
Gordon Seitz ◽  
Rob Langridge ◽  
M. Ersen Aksoy ◽  
...  
Keyword(s):  
Seismic Hazard ◽  
North Anatolian Fault ◽  
Marmara Sea ◽  
Fault Segmentation ◽  
The North

Paleoseismic history and slip rate along the Sapanca-Akyazı segment of the 1999 İzmit earthquake rupture (M w  = 7.4) of the North Anatolian Fault (Turkey)

2018 ◽  
Vol 738-739 ◽  
pp. 92-111 ◽  
Author(s):  
Aynur Dikbaş ◽  
H. Serdar Akyüz ◽  
Mustapha Meghraoui ◽  
Matthieu Ferry ◽  
Erhan Altunel ◽  
...  
Keyword(s):  
Slip Rate ◽  
North Anatolian Fault ◽  
Earthquake Rupture ◽  
Izmit Earthquake ◽  
The North

scholarly journals Crustal structure at the western end of the North Anatolian Fault Zone from deep seismic sounding

2001 ◽  
Vol 44 (1) ◽  
Author(s):  
A. E. Karahan ◽  
H. Berckhemer ◽  
B. Baier
Keyword(s):  
Fault Zone ◽  
Crustal Structure ◽  
Lower Crust ◽  
North Anatolian Fault ◽  
Deep Seismic Sounding ◽  
North Anatolian Fault Zone ◽  
Izmit Earthquake ◽  
The North ◽  
Seismic Sounding ◽  
Sediment Cover

The first deep seismic sounding experiment in Northwestern Anatolia was carried out in October 1991 as part of the "German - Turkish Project on Earthquake Prediction Research" in the Mudurnu area of the North Anatolian Fault Zone. The experiment was a joint enterprise by the Institute of Meteorology and Geophysics of Frankfurt University, the Earthquake Research Institute (ERI) in Ankara, and the Turkish Oil Company (TPAO). Two orthogonal profiles, each 120 km in length with a crossing point near Akyazi, were covered in succession by 30 short period tape recording seismograph stations with 2 km station spacing. 12 shots, with charge sizes between 100 and 250 kg, were fired and 342 seismograms out of 360 were used for evaluation. By coincidence an M b = 4.5 earthquake located below Imroz Island was also recorded and provided additional information on Moho and the sub-Moho velocity. A ray tracing method orginally developed by Weber (1986) was used for travel time inversion. From a compilation of all data two generalized crustal models were derived, one with velocity gradients within the layers and one with constant layer velocities. The latter consists of a sediment cover of about 2 km with V p » 3.6 km/s, an upper crystalline crust down to 13 km with V p » 5.9 km/s, a middle crust down to 25 km depth with V p » 6.5 km/s, a lower crust down to 39 km Moho depth with V p » 7.0 km/s and V p » 8.05 km/s below the Moho. The structure of the individual profiles differs slightly. The thickest sediment cover is reached in the Izmit-Sapanca-trough and in the Akyazi basin. Of particular interest is a step of about 4 km in the lower crust near Lake Sapanca and probably an even larger one in the Moho (derived from the Imroz earthquake data). After the catastrophic earthquake of Izmit on 17 August 1999 this significant heterogeneity in crustal structure appears in a new light with regard to the possible cause of the Izmit earthquake. Heterogeneities in structure are frequently also heterogeneities in strength and stress that impede or even lock rupture. The Izmit earthquake is discussed in relation to a large stepover or jog at the North Anatolian Fault.

scholarly journals The implications of fault zone transformation on aseismic creep: Example of the North Anatolian Fault, Turkey

2017 ◽  
Vol 122 (6) ◽  
pp. 4208-4236 ◽  
Author(s):  
Maor Kaduri ◽  
Jean-Pierre Gratier ◽  
François Renard ◽  
Ziyadin Çakir ◽  
Cécile Lasserre
Keyword(s):  
Fault Zone ◽  
North Anatolian Fault ◽  
The North
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