Abstract. It caused heavy damage within an about 100-km-wide and 600-km-long region, rupturing the fault zone between Bolu/Gerede in the west ( Fig. The North Anatolian Fault Zone (NAFZ) of Turkey is a region of high seismicity. North Anatolian Fault Zone Earthquake hazard Poisson method Seismic source regions 1. A short summary of this paper. Armijo et al., Asymmetric slip partitioning in the Sea of Marmara pull-apart: a clue to propagation processes of the North Anatolian Fault?, Terra Nova 14,2 DOI: 10.1046/j.1365-3121.2002.00397.x, 2002 mile) long gap at the western end of the North Anatolian Fault. 1.Earthquake potential of the San Andreas and North Anatolian Fault Zones: A comparative look M. B. Sørensen Department of Earth Science, … Introduction The earthquake hazard of regions represented a pos-sible potential or level of expected hazard and caused by geological structure features, tectonic movements, geophysical fields etc. In this study, we focused on seismic cycles and seismic risk predictability along the North Anatolian Fault (NAF). Figure 4. The North Anatolian Fault Zone: an Evaluation of Earthquake Hazard Parameters Yusuf Bayrak, Hakan Ç õnar and Erdem Bayrak Karadeniz Technical University / Geophysics Department, Trabzon Turkey 1. This paper. Seismicity. Earthquake Prediction – North Anatolian Fault, Turkey. What might cause this pattern? Earthquake Prediction – North Anatolian Fault, Turkey. Figure1. Earthquake Prediction - North Anatolian Fault, Turkey. Summary. The first recorded earthquake … 4 ). Abstract Between 1939 and 1967, six large fault ruptures formed a westward-migrating sequence of events along a 900-km-long nearly continuous portion of the North Anatolian fault. 1 Deep crustal structure of the North Anatolian Fault and the earthquake cycle Dense Array for Northern Anatolia Sebastian Rost1, Gregory Houseman1, David Thompson1,2, David Cornwell2 1School of Earth and Environment, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT 2School of Geosciences, University of Aberdeen, King’s College, Aberdeen, AB24 3UE It is one of the seismically most active dextral fault systems of the world with a seismicity comparable with the San Andreas Fault in California and the Alpine Fault in New Zealand. The largest earthquakes struck on the older, eastern section of the North Anatolian Fault, said lead study author Marco Bohnhoff, a seismologist at … In this study, we focused on seismic cycles and seismic risk predictability along the North Anatolian Fault (NAF). Another large (M7.1) earthquake ruptured a simi-lar fault length at the eastern junction between the two branches (Mudurnu in 1967). East of Bolu, the fault zone exhibits evidence of a sequence of large (Mw>7) earthquakes Check and double-click the "North Anatolian Fault, Turkey" placemark in the Problem 3 folder to fly to northern Turkey. The fault segment to the east of the Marmara Sea ruptured in a pair of earthquakes in 1999 shown in red and purple. But because this fault is not part of the North Anatolian fault system, it can not create big earthquakes… Doğan Kalafat. What is the dominant pattern of major earthquakes along the North Anatolian fault from 1939 to 1999? The North Anatolian Fault extends from the junction with the East Anatolian Fault at the Karliova Triple Junction to the Aegean Sea. Different phases of the earthquake cycle captured by seismicity along the North Anatolian Fault Fatih Bulut1 1AFAM Disaster Research Center, Istanbul Aydın University, Istanbul, Turkey Abstract The North Anatolian Fault has accommodated three major earthquakes during the last 15years. Download Full PDF Package. The East Anatolian Fault runs in a northeasterly direction, starting from the Maras Triple Junction at the northern end of the Dead Sea Transform, and ending at the Karliova Triple Junction where it meets the North Anatolian Fault. Seismol. The Sea of Marmara accommodates segments of the North Anatolian Fault (NAF) in Turkey and remains the only part of the western NAF that has not ruptured during the last century. The Marmara Sea … The chain of earthquakes along the North Anatolian fault presents a gap at south of Istanbul as shown in Figure 1. These events or subsets of them have been the subject of 1 Deep crustal structure of the North Anatolian Fault and the earthquake cycle Dense Array for Northern Anatolia Sebastian Rost1, Gregory Houseman1, David Thompson1,2, David Cornwell2 1School of Earth and Environment, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT 2School of Geosciences, University of Aberdeen, King’s College, Aberdeen, AB24 3UE The North Anatolian Fault is a ca. This earthquake, explained geologist Aykut Barka, was part of a sequence that began along the North Anatolian Fault in 1939 near its eastern end. Between 1939 and 1999 a series of devastating M7+ strike-slip earthquakes propagated westward along the North Anatolian Fault Zone, beginning with the 1939 M7.8 Erzincan earthquake on the eastern end of the North Anatolian Fault system. East of Bolu, the fault zone exhibits evidence of a sequence of large (Mw >7) earthquakes that occurred during the twentieth century that displayed a migrating earthquake sequence from east to west. Image courtesy of USGS. The fault segment to the west of the Marmara Sea ruptured in 1912. ?1500 km long, arcuate, dextral strike-slip fault zone in northern Turkey that extends from the Karliova triple junction to the Aegean Sea. Here we interpret images from ambient noise surface wave tomography of the upper 10 km of the North Anatolian Fault zone (NAFZ), Turkey, in the rupture zone of the 1999 Izmit earthquake. The East Anatolian Fault Turkish: Doğu Anadolu Fay Hattı is a major strike - slip fault zone in eastern Turkey. A … ?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. Earthquakes on the North Anatolian Fault System Disasters: Geology vs. Geophysical Research Letters, 2002. Earthquake sequence along the North Anatolian fault, Turkey, 1939-1999. Ten M?? Bolu), large earthquake fre- quency is measured from either historic earthquake catalogs, or geologic records from isolated outcrops and marine sediment cores from the Marmara Sea. East of Bolu, the fault zone exhibits evidence of a sequence of large (M-w > 7) earthquakes that occurred during the twentieth century that displayed a migrating earthquake sequence from east to west. 10 M ≥ 6.7 earthquakes ruptured 1000 km of the North Anatolian fault (Turkey) during 1939–1992, providing an unsurpassed opportunity to study how one large shock sets up the next. From 1939 to 1999 a series of earthquakes progressed westwards along the North Anatolian Fault. The North Anatolia fault is Asia’s San Andreas. But perhaps the San Andreas should really be known as America’s Anatolian. Not many countries own their own plate. Turkey gets close. It is almost the sole occupant of the Anatolian plate, shared only with the northern edge of Cyprus. Owning your own plate should feel safe. Viscoelastic block models of the North Anatolian Fault: a unified earthquake cycle representation of pre-and postseismic geodetic observations. 2016; 107:403–417. The North Anatolian Fault Zone (NAFZ) is the major continental strike-slip fault system located in northern Anatolia. [Google Scholar] It was followed in quick succession by five further events, ranging from M6.9 to M7.3, which broke the adjacent regions. References. Seismic hazard assessment of the central North Anatolian Fault (Turkey) from GPS-derived strain rates and b-values Asli Dogru a, Ethem Gorgunb, Bahadir Aktugc and Haluk Ozener a aDepartment of Geodesy, Kandilli Observatory and Earthquake Research Institute, Bogazici University, Istanbul, Turkey; bDepartment of Geophysical Engineering, Engineering Faculty, Istanbul University, Istanbul, Turkey; the Mw=7.4 Izmit earthquake of 17 August 1999, on the western North Anatolian Fault Zone (Bohnhoff et al., 2006). The North Anatolian Fault is one of the most energetic earthquake zones in the world. Knowledge on large earthquakes (M≥ 7.0), geology and fault kinematics is used to analyse conditions that favour isolated seismicity, clustered earthquakes or propagating sequences along the North Anatolian Fault (NAF) and the Sea of Marmara pull-apart. They generally become progressively younger from east (oldest) to west (youngest). Introduction Turkey is located in one of the most actively deforming regions in … Viscoelastic deformation from North Anatolian Fault Zone earthquakes and the eastern Mediterranean GPS velocity field. The North Anatolian fault zone marks the boundary between the Eurasian and Anatolian plates. The North Anatolian fault (NAF) is a ?? The scarcity of earthquakes along the central part of the North Anatolian Fault suggests that this portion of the fault is in a general, interseismic locked stage following the destructive 1939, 1942, 1943, 1944 and 1951 earthquakes. The fault runs along the boundary between the Eurasian plate and the smaller Anatolian plate but movement in the area is controlled by collision of the larger Arabian plate to the south and the Eurasian plate to the north. Download PDF. In 1999, the large surface-rupturing earthquakes of Izmit and Duzce completed a 60-year cycle that included a westward migration of nine consecutive large earthquake failures (>50 km surface rupture), which started with the 1939 Erzincan earthquake in eastern Turkey. Top panel: sites and the length of the fractures of the NFA; bottom panel: seismic gap at the Marmara sea, the red segment of the NAFZ has been not reactivated since 1766. It is one of the seismically most active dextral fault systems of the world with a seismicity comparable with the San Andreas Fault in California and the Alpine Fault in New Zealand. It enlightens seismologists about the size of the historical earthquakes thanks to its earthquake damage and repair record. In the Marmara area the North Anatolian Fault has caused immeasurable devastation. During the last century, several strong earthquakes … A few miles away beneath the Marmara Sea, the North Anatolian fault line is stirring, virtually certain to rupture within a generation at the latest … The expected earthquakes in this region represent an extreme danger for the Turkish megacity. The 17 August 1668 event (Ambraseys and Finkel, 1988) was defined as one of the largest earthquakes associated with the North Anatolian Fault Zone. Istanbul is near the North Anatolian Fault, close to the boundary between the African and Eurasian Plates. The North Anatolian Fault Zone (NAFZ) of Turkey is a region of high seismicity. Over the last 60 years, the North Anatolian Fault has ruptured in a series of destructive earthquakes with an overall propagation from east to west. The earthquake in Basyurt looks likely to have been triggered by movement on the eastern fault, said Brian Baptie, a seismologist at the British Geological Survey. The North Anatolian Fault (NAF) (Turkish: Kuzey Anadolu Fay Hattı) is an active right-lateral strike-slip fault in northern Anatolia, and is the transform boundary between the Eurasian Plate and the Anatolian Plate. This fault has produced several earthquakes of magnitudes in excess of 7.0 M, which since 1939 have been occurring along the fault … In addition to earthquakes, steady slip beneath the North Anatolia fault system transfers stress to the seismogenic portion of the fault. A series of large earthquakes have occurred on the fault system; each resulting from only one segment of the fault breaking at a time. Toward the west end of the NAF (26°E–32°E, i.e. The North Anatolian Fault that runs through Turkey and the Aegean Sea is capable of causing an earthquake with a 7 or higher magnitude. Choose one: They generally become progressively younger from west (oldest) to east (youngest). Download PDF. Introduction Turkey is located in one of the most actively deforming regions in … For these events—the 1939 Erzincan, 1942 Niksar-Erbaa, 1943 Tosya, 1944 Bolu-Gerede, 1957 Abant, and 1967 Mudurnu Valley earthquakes—I have compiled a record of dextral slip, which contains nearly 100 … TURKEY is in danger of being struck by a devastating earthquake of up to 7.4 on the Richter scale, researchers have warned. In this study, large earthquakes over the last millennium were quantitatively analysed to quantify a time frame for future large earthquakes along the North Anatolian Fault (NAF), which is a ~1200-km long plate boundary generating devastating earthquakes in northern This study adds to the growing number of paleoseismic 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. is still a fundamental target of earthquake scientists (e.g., Jackson, 2003). doi: 10.1785/0120160059. View Earthquakes_on_the_North_Anatolian_Fault_System from SCIENCE AND TECHNOLOGY 0836 at Temple University. In Turkey, "Deprem" and "Fay" are the names for earthquake and fault respectively, and these two terms are well known by the Anatolian … In 1957 the next segment failed, and the following segment we… Also, in the Layers panel, turn on Gallery > Earthquakes. Figure1. 37 Full PDFs related to this paper. Turkey is in a geographically seismic area with the country between the North Anatolian fault line running through the entirety of the landmass and the East Anatolian fault line running through the south of the country.