anatolian fault location

Figure 3. The North Anatolian Fault (NAF), which accommodates the westward escape of the Anatolian plate, is a young transform boundary forming an active deformation zone along the northern part of Turkey. Anatolia, also called Asia Minor, is the peninsula of land that today constitutes the Asian portion of Turkey. The NAF defines the northern boundary of the Anatolian plate and accommodates the relative right-lateral motion between the Eurasian and Anatolian plates [e.g.,Sengo¨retal.,1985;Armijoetal.,1999].The17August 1999, Izmit earthquake (M w 7.4 from long-period seismic wave data), which ruptured the western portion of the NAF Anatolian fault zone ... Sengör et al. The Adıyaman fault is a major splay from the East Anatolian Fault (EAF), one of the most important tectonic … branch of the North Anatolian fault Zhigang Peng∗ and Yehuda Ben-Zion Department of Earth Sciences, University of Southern California, Los Angeles, CA 90089-0740, USA. Although its geologic and geomorphologic features are well defined, crustal deformation and associated seismicity around central segment of the NAF is relatively less-known. Location. Both the 1943 and 1944 earthquakes are suspected to have had Vertical black bars indicate the bracketing age constraints from paleoseismologic studies, and circles indicate potentially correlative historical earthquakes. BOUNDARIES The Anatolian/Aegean region is currently sandwiched in between the African, Arabian and Eurasian plates. The northern boundary is marked by the North Anatolian Fault (NAF) in the east and the Northern Aegean Trench (NAT) in the west. The Anatolian/Aegean region is currently sandwiched in between the African, Arabian and Eurasian plates. Other names: transcurrent fault, lateral fault, tear fault or wrench fault. Earthquakes on the North Anatolian Fault between 1939 and 1999. ?6.7 earthquakes ruptured 1,000 km of the North Anatolian fault (Turkey) during 1939-92, providing an unsurpassed opportunity to study how one large shock sets up the next. The fault extends westward from a junction with the East Anatolian Fault at the Karliova Triple Junction in eastern … Using the detailed geometry and tectonics of the Main Marmara fault that connects the Gulf of Izmit fault with the Ganos fault established by Le Pichon et al.and the new GPS data set recently analyzed by Meade et al., we confirm the existence of a Marmara block delimited to the north by the northern branch of the North Anatolian fault (the Marmara branch) and to the south by the southern … The difference in the relative motions of the two plates is manifest in the left lateral motion along the fault. Anatolian plate as determined from GPS measurements and the fault kinematics surrounding the Arabian plate (Figure 1b) [Reilinger et al., 2006]. There it dives underneath the sea and re-emerges on the The fault extends westward from a junction with the East Anatolian Fault at the Karliova Triple Junction in eastern Turkey, across northern Turkey and into the Aegean Sea for a length of … The rock types on either side of the fault are compared, offset markers are illustrated, and several types of landforms particular to strike-slip faults are shown. Figure 4. Location of previously dated fault-gouge Some of the most destructive earthquakes in history have been caused by movement along this fault. The region is characterized by frequent earthquakes. The earthquake of August 17, 1999 occurred along the long, east-west trending, great North Anatolian Fault Zone (NAFZ) - known to be the most prominent active fault system in Northwestern Turkey. NAFZ passes through Izmit Bay, traverses Marmara Sea and reaches the Saros Gulf to the southeast. Received 2004 May 5; in original form 2004 March 14 SUMMARY We perform a systematic analysis of crustal anisotropy along and around the Karadere–D¨uzce The North Anatolian Fault (NAF), a major continental plate boundary, accommodates the motion between Eurasia and Anatolia with right-lateral strike-slip motion. On August 17, 1999, a destructive earthquake occurred in the western part of the North Anatolian Fault Zone, Turkey. Ten M?? Barka, A., Kuşçu, I. It formed rapidly ca. These). The North Anatolian Fault extends from the junction with the East Anatolian Fault at the Karliova Triple Junction to the Aegean Sea. (2005) for the years 1939–2012. ?1500 km long, arcuate, dextral strike-slip fault zone in northern Turkey that extends from the Karliova triple junction to the Aegean Sea. The Anatolian transform fault system is probably the most active in the world. The Izmit earthquake occurred in a 150 km (94 mile) long gap at the western end of the North Anatolian Fault. During pre-location, the fault is determined precisely to the meter. The left-lateral East Anatolian fault ruptured 50 km south of where it joins the North Anatolian fault (Seymen & Aydin, 1972) . The NAFZ observed very large earthquakes from the past to present. The surface ruptures of the large 1999 August Izmit and 1999 November Duzce earthquakes are indicated with blue and purple squares, respectively. (1996) Extents of the North Anatolian Fault in the İzmit, Gemlik and Bandırma Bays. In a strike-slip fault, the movement of blocks along a fault is horizontal. Wrenching along the fault apparently started after closure of the branches of the North Anatolian Fault zone are indicated. Tectonic Map of the Marmara Region and location of the earthquake. Blue rectangles define the ˙Ismetpasa¸ and Destek segments from west to east, respectively (after Bohnhoff et al., 2016). We analysed the properties of the upper-mantle strain field and mantle anisotropy in the vicinity of NAFZ via splitting of SKS and SKKS phases. The North Anatolian Fault . The southern branch builds a releasing bend towards the east, passes through Mudurnu, and connects to the main branch of the NAFZ The northern boundary is marked by the North Anatolian Fault (NAF) in the east and the Northern Aegean Trench (NAT) in the west. Sapanca Fault Segment which highly seismic activities take place on and is situated on the western part of North Anatolian Fault (NAF). In this study, we Fault analysis makes it possible to determine the characteristics of the fault and the further procedure. The North Anatolian fault is a right lateral strike-slip fault. lateral North Anatolian fault, a feature long con-sidered a continental transform (Ketin, 1948; McKenzie, 1972) is an excellent example to study. A shallow fault-zone E., Klinge, K., Ibs von Seht, M., Karahan, A.: Preliminary after- structure illuminated by trapped waves in the Karadere-D¨uzce shock analysis of the Mw=7.4 Izmit and Mw=7.1 D¨uzce earth- branch of the North Anatolian Fault, western Turkey, Geophys. Map of the Anatolian plate region. The East Anatolian Fault extends from the Maras Triple Junction at the northern end of the Dead Sea Transform to the Karliova Triple Junction and North Anatolian Fault. The NAF has a long history of seismicity, and is characterized by dextral strike-slip motion Earthquake sequence along the North Anatolian fault, Turkey, 1939-1999. ABSTRACT The Sea of Marmara is cut through by the North Anatolian Fault (NAF) from east to west. The epicenter of the earthquake is located near the eastern end of the Yedisu Fault, one of the important segments of the North Anatolian Fault. Anatolian fault zone (NAFZ; northern Turkey) shed light on the debate over the origin and reactivation behavior of this major active fault system. The at-fault driver's car insurance helps cover injury and property damage claims. Figure1. The East Anatolian Fault (Turkish: Doğu Anadolu Fay Hattı) is a major strike-slip fault zone in eastern Turkey. Results further reveal a strong velocity contrast across the North Anatolian Fault likely representing a 40-60 km decrease in lithospheric thickness from the Precambrian lithosphere north of the fault to a thinned Anatolian lithosphere in the south. Lake Hazar lies along the East Anatolian transform fault. Seismic stations are marked by triangles. Finally, geodetic analyses yield the slip rate along the fault (Oral 1994; Straub & Kahle 1994; Straub 1996). Earthquake potential of the San Andreas and North Anatolian Fault Zones: A comparative look M. B. Sørensen Department of Earth Science, University of Bergen, Norway, Department of Earth Science. The inset in the upper right shows a location map of the greater eastern Mediterranean region with the bold black arrows indicating the simplified relative plate motion with respect to stable Eurasia … 1. The North Anatolian Fault breaks into a complicated network of fault branches under the Marmara Sea, where it passes just 20 kilometers south of Istanbul. 2013 ). The inset in the upper right shows a location map of the greater eastern Mediterranean region with the bold black arrows indicating the simplified relative plate motion with respect to stable Eurasia … In order to monitor displacements occurring in this fault segment, the Sapanca micro-geodetic network was established in 1990 by Kandilli Observatory and Earthquake Research Institute of Bogazici University. Anatolian Fault Zone (NAFZ) and the Eskisehir North Anatolian Fault Zone (NAFZ) and the Es-Fault Zone (EFZ), respectively. This fault has produced several earthquakes of magnitudes in excess of … The fissure marks the … The Anatolian plate is escaping westward from between the vise of the converging Arabian and Eurasian plates. Istanbul has one of the highest seismic vulnerabilities in the world due to its proximity to the North Anatolian Fault. Hazardous Living: Collision forces behind devastating Turkey quake. [3] The EAFZ was first described by Allen [1969] and mapped by Arpat and Şaroğlu [1972], however, its exact 1Helmholtz Centre Potsdam, GFZ German Research Centre for Geosciences, Potsdam, Germany. 1) is a major ∼1200 km long continental strike-slip boundary, which takes up the dextral relative motion between Anatolia and Eurasia at a current rate of ∼25 mm yr −1 (Müller et al., 2013; Perouse et al., 2012; Reilinger et al., 2006, 2010). Turk J Mar Sci 2: 93-106. Turkey is set on a minor tectonic plate … at one site along the 110-km rupture of the North Anatolian fault that produced the M w 7.4 earthquake of 17 August 1999. The earthquake recurrence interval ranges from 300 to 800 years. The 745-mile-long (1,200 km) North Anatolian Fault is one of the biggest strike-slip faults in the world, on the scale of California's San Andreas Fault. The Central Anatolian volcanics intrude through the transtensional basins formed by the Central Anatolian Fault Zone. The state of the Main Marmara Fault (fault segment of the North Anatolian Fault) is widely discussed, towards whether it is creeping or locked. The southeastern boundary of the Anatolian microplate, from the eastern end of the North Anatolian fault to the Mediterranean subduction zone, is the East Anatolian fault. Flight SQ Rome-Singapore----- The North Anatolian Fault (NAF) (Turkish: Kuzey Anadolu Fay Hattı) is a major active right lateral-moving geologic fault in northern Anatolia which runs along the tectonic boundary between the Eurasian Plate and the Anatolian Plate. Fault segments that have not experienced a recent earthquake are termed seismic gaps and are considered potential sites for future events. Turkey is seismically active. Anatolian fault zone ... Sengör et al. The black dashed line shows the location of the Intra-Pontide suture within the Armutlu Block inferred byAkbayram et al.(2016). The preceding North Anatolian earthquakes increased stress on the East Anatolian fault by 0.6 bars, with the stress maxima centered on the future 1971 rupture zone. The North Anatolian Fault Zone (NAFZ) is the major continental strike-slip fault system located in northern Anatolia. Figure 1. The Ganos Fault is an active segment representing a seismic gap at the western end of the 1200-km-long dextral North Anatolian Fault (NAF; Şengör et al. Strike-Slip Basins Along 1999 Earthquake Rupture, Anatolian Fault, Turkey. North Anatolian Fault The North Anatolian Fault is one of the most energetic earthquake zones in the world. It forms the transform type tectonic boundary between the Anatolian Plate and the northward-moving Arabian Plate. Overview on the North Anatolian Fault Zone (NAFZ) The North Anatolian Fault Zone (NAFZ) is an active right-lateral system, about 1500 km long, which bounds to the north the Anatolian block. The North Anatolian Fault is subject to scrutinous examination due to its close proximity to many of the large cities and its regular seismic activity.The fault is a dextral strike-slip fault zone along Northern Turkey and has produced 6 fatal earthquakes of M>6 in the last 20 years. A number of digital off-shore seismic reflection data acquired by TPAO during 1970, 1984 and 1991 have been interpreted. Red lines depict present plate boundary faults, and black lines are important faults. 1st Floor. The North Anatolian Fault (NAF) is a right-lateral plate boundary fault that arcs across … The fault motion of a strike-slip fault is caused by shearing forces. The fault is the result of the relative westward motion of the Anatolian Plate with Eurasia. A shaded relief map has been overlain with the location of faults. The North Anatolian fault emerges as a close analogue of the San Andreas fault in California, with two continental transforms sharing similar slip rates, total length, and straight- The North Anatolian Fault is another source of regular seismic activity in the Eurasian Plate region. Comparison Between San Andreas Fault and North Anatolian Fault. In the Lake Hazar region, the EAFS consists of five fault zones. 2005).In Northwest Anatolia, the NAF exhibits a relatively complex structure; it partitions into several active branches as it enters the Marmara Sea near İzmit. Dark arrows show the direction of plate motion based on GPS studies (relative to a fixed Eurasia), with the mm/yr shown in brackets [Reilinger et al., 2006]. (a) A location map for our seismic experiment along the Karadere–Duzce branch of the NAF. that aseismic fault slip, or fault creep, occurs in the upper crust on some segments of major faults including the San Andreas Fault (SAF) north of Parkfield [e.g.,Thatcher, 1979; Burford and Harsh, 1980], the Hayward fault [e.g., Titus et al., 2006], the Superstition Hills fault [e.g.,Bilham, 1989; Wei et al., 2009], and the North Anatolian Fault in the fault location from about k25 km to +5 km. Barka, A.A. (1992) The North Anotalian fault zone. The August 17, 1999 Earthquake Occurred Along a Known Seismic Gap. Monitoring and control—record and analyze traveling waves from faults, switching events, breaker restrikes, and self-extinguishing faults. CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): reflection, pull-apart. In geographic terms Anatolia may be described as the area in southwestern Asia bounded to the north by the Black Sea, to the east and south by the Southeastern Taurus Mountains and the Mediterranean Sea, and to the west by the Aegean Sea and Sea of Marmara. The left-lateral strike-slip Adıyaman fault is located in eastern Turkey within the plate boundary deformation zone between Arabia and Anatolia. Accepted 2004 June 8. The author recounts a field trip in October along the section of Turkey's North Anatolian Fault that last ruptured in 1944. (2010) used teleseismic data to find a coher- It separates the Eurasian plate from the Anatolian plate in northern Turkey. Such tectonic ground displacements are characteristic of major earthquakes along the North Anatolian Fault and, possibly, have been responsible for tsunami generation in the past. Although much of the deformation associated with Arabia-Eurasia collision and Aegean extension is expressed by westward translation of Central Anatolia along the North Anatolian and East Anatolian fault zones, important deformation also takes place in the interior. In this study we investigate three-dimen- and September , and aftershocks of the sional velocity and Poisson’s ratio structures of the The benefit of using a recent rupture to compare serial ruptures lies in the fact that the location, magnitude, and slip vector of the most recent event are all very well documented. The East Anatolian Fault System (EAFS) is a 30-km-wide, 700-km-long and NE-trending sinistral strike- slip megashear belt between the Anatolian platelet in the northwest and African-Arabian plates in the southeast. The North Anatolian Fault (NAF) is one of the world’s largest active continental strike-slip faults, and forms the northern margin of the Anatolian plate. The North Anatolian Fault is 745 miles (1,199 kilometers) long, about the same length as the San Andreas Fault in California, and stretches from northern Turkey to the Aegean Sea. Well-known terrestrial examples include the San Andreas Fault, which, during the San Francisco earthquake of 1906, had a maximum movement of 6 metres (20 feet), and the Anatolian Fault, which, during the İzmit earthquake of 1999, moved more than 2.5 metres (8.1 feet). An at-fault car accident occurs in states without PIP coverage laws. Annales Tectoncae Special Issue 6: 164-195. The chain of earthquakes along the North Anatolian fault presents a gap at south of Istanbul as shown in Figure 1. kisehir Fault Zone (EFZ), respectively. The fault motion of these large earthquakes suggests that they belong to the broad North Anato-lian Fault Zone (NAFZ), where a transform plate boundary exists between the Anatolian and Eur-asian plates in northern Anatolia. Thursday, January 5, 2012. 1). The … At the location of this event, the Arabia plate moves towards the north-northwest with respect to Eurasia at a rate of about 21 mm/yr. used teleseismic data to find a coherent anisotropy signature attributed to mineral fabric within the mantle lithosphere, in which the fast polarization direction aligns with the principal extension direction (approximately NE–SW). Fault location—traveling-wave fault location pinpoints faults to the nearest tower span. The new quake did not occur on the North Anatolian Fault. The North Anatolian fault, which caused destructive earthquakes in Turkey in 1999, is comparable to the San Andreas fault in California. It separates the Anatolian block (Turkey) from the Eurasian plate, and runs from the Karliova Triple Junction to the Marmara Sea at Izmit. The North Anatolian fault (NAF) is a ?? 3. tem,Biryol et al. ). November , Duzce earthquake (M . The post concludes with an examination of the town of Gerede itself, which is built directly atop the fault. This fault slips with an average speed of 20-30mm/yr and is the main focus of deformation on the northern edge of the Anatolian region as it moves west toward the Hellenic subduction zone. The rectangle marks the study area including the rupture of the 1999 Mw=7.4 Izmit earthquake and is enlarged in b. It marks the boundary between the Eurasian and Anatolian tectonic plates, which move relative to each other at a speed of around 2 cm per year. The fault is approximately E-W, whereas the relative motion between Africa and Eurasia is northward. A hypothesis for the alternative southern branch of the North Anatolian Fault Zone, Northwest Turkey 119 2a) which is an important structure indicating the location of the main strike-slip branch (see earlier). The North Anatolian Fault ( NAF) ( Turkish: Kuzey Anadolu Fay Hattı) is an active right-lateral strike-slip fault in northern Anatolia which runs along the transform boundary between the Eurasian Plate and the Anatolian Plate. The fault extends westward from a junction with the East Anatolian Fault at... The Yedisu Fault has not generated a strong earthquake in the last 250 years — since 1874, when a magnitude-5.8 quake struck — … Your auto liability coverage would be used to … Surface uplift at the northern margin of the Central Anatolian Plateau (CAP) is integrally tied to the evolution of the Central Pontides (CP), between the North Anatolian Fault (NAF) and the Black Sea. EAFZ East Anatolian Fault Zone, KJ Karliova Junction, NAFZ North Anatolian Fault Zone Full size image The main fault segments of the EAFZ from SW to NE are as follows: Antakya-Turkoglu, Turkoglu-Golbasi, Golbasi-Celikhan, Sincik-Hazar, Hazar-Palu and Bingol-Karliova, respectively (Italiano et al.

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