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Başıbüyük (Maltepe)-Kurfalı (Kartal) Civarında Istanbul
İSTANBUL TEKNİK ÜNİVERSİTESİ AVRASYA YER BİLİMLERİ ENSTİTÜSÜ BAŞIBÜYÜK (MALTEPE)-KURFALI (KARTAL) CİVARINDA İSTANBUL PALEOZOYİK İSTİFİNİN YAPISAL ÖZELLİKLERİ YÜKSEK LİSANS TEZİ Jeoloji Müh. Pınar Gutsuz Anabilim Dalı: Yer Sistem Bilimleri Program: Katı Yer Bilimleri Tez Danışmanı: Prof. Dr. H. Serdar Akyüz EYLÜL 2008 ÖNSÖZ “Başıbüyük (Maltepe)-Kurfalı (Kartal) civarında İstanbul Paleozoyik istifinin yapısal evrimi” başlıklı çalışma, İstanbul Teknik Üniversitesi Avrasya Yer Bilimleri’nde Prof.Dr. H.Serdar Akyüz denetiminde hazırlanmıştır. Yüksek lisans öğrenimim ve tezim süresince her zaman bana destek olan, bilgileri ve görüşleriyle beni aydınlatan ve yönlendiren, okulda çalışma ortamına sahip olmamı sağlayan ve ince esprilerini benden esirgemeyen sevgili danışmanım Prof. Dr. H.Serdar Akyüz’e sonsuz teşekkür ederim. Bilgileriyle beni aydınlatan, tezi ortaya çıkarmamda büyük katkıları olan en başta Ar. Gör. Gürsel Sunal’a, Ar. Gör. Cengiz Zabcı’ya, Ar. Gör. M. Korhan Erturaç’a, arazi çalışmalarında bana destek olan arkadaşım Jeoloji Mühendisi Emre Kasapoğlu’na, Ar. Gör. Eşref Aylan’a, Yüksek Jeoloji Mühendisi Aynur Dikbaş’a, ince kesit çalışmalarında yardımcı olan Prof. Dr. Ş.Can Genç’e ve Ar. Gör. Fatma Gülmez’e, ince kesit fotoğraflarının çekilmesinde yardımcı olan Yüksek Jeoloji Mühendisi Demet Biltekin’e, ince kesitleri hazırlamamda yardımcı olan Mehmet Ali Oran’a teşekkürü borç bilirim. Beni her zaman destekleyen, yanımda olan, sevgisinden ve varlığından güç aldığım sevgili Ayda Gutsuz’a ve ev halkına sonsuz teşekkür ederim. Ayrıca, tez döneminde beni anlayışla karşılayan ve destekleyen tüm dostlarıma çok teşekkür ederim. Eylül, 2008 Pınar Gutsuz ii İÇİNDEKİLER ÖNSÖZ ii İÇİNDEKİLER iii EK LİSTESİ iv ŞEKİL LİSTESİ v ÖZET vii SUMMARY ix 1. GİRİŞ 1 1.1. GENEL 1 1.1.1. -
OZEL EK 2019 Ingilizce 4.Pdf
"[NBTSBGM ÎPLTFÎFOFLMJ .FSDFEFT#FO[&VSP LBNZPOBJMFTJ Mercedes-#FO[&VSPBSBmMBS EÜLCBLÎNNBMJZFUJZMFDFCJOJ[JZPSNB[ EBIBV[VOCBLÎNBSBMÎLMBSÎZMBJÜUFOBMÎLPZNB[ TEKBOR “Hayat Taşır” Telefon: +90(412) 456 6052 • Mail: [email protected] • Fax: +90(412) 456 6085 Adres: Bismil Diyarbakr Yolu 8.Km Bismil/DùYARBAKIR www.tekbor.com.tr Bu bir güç gösterisi. Yeni X-Class V6. 258 BG ve 550 Nm torka sahip V6 turbo motoruyla şimdi yollarda. BaķWan Sona (WNLle\LFL: ZF’den KomponenWler ve 6LVWHmler 2WREÕV \ROFXODUĊ PDNVLPXP JÕYHQOLN YH NRQIRU EHNOHUOHU =) QLQ ķDQ]ĊPDQODUĊ YH DNVODUĊ EX EHNOHQWLOHULQ NDUķĊODQPDVĊQD\DUGĊPFĊROPDNWDGĊU µUÕQOHULPL] \ROFXODUĊQ DUDFD KĊ]OĊ YH JÕYHQOL ELU ķHNLOGH LQLS ELQPHOHULQL JÕYHQOL YH NH\LƮL ELU \ROFXOXN \DSPDODUĊQĊVDøODU=)ÕUÕQOHULELUELUOHULQHWDPRODUDNX\XPOXGXUYHHQÕVWGÕ]H\WHNQRORML\OHJHOLķWLULOGLNOHUL LÀLQGLQDPLNKĊ]ODQPDYHD\QĊ]DPDQGDVHVVL]ÀDOĊķPDÏ]HOOLNOHULQHVDKLSWLU =)NRPSRQHQWOHULLOHDUDFĊQĊ]ĊQKHPNXOODQĊPÏPUÕPDOL\HWOHULQLKHPGHDUDÀYHÀHYUHÕ]HULQGHNLROXPVX] HWNLOHULQLD]DOWDELOLUVLQL] ]IFRPEXVHs BU GURUR TABLOSUNA BU GURUR BELGESİ YERLİ MALI Yerli üretim Ford Trucks, yerli malı belgesine sahip ilk ağır ticari markası olmanın gururunu yaşıyor. Bugün de yüksek yerlilik oranıyla üretimine devam ediyor, Türkiye kazanıyor. Ford Trucks Her yükte birlikte 444 36 73 / 444 FORD www.fordtrucks.com.tr TRUCKS • ,TRSZQ2&#,3+ #0-$+','120'#1510#"3!#","2&##!-,-+7512)#,-4#0 7-,# &,"5'2&2Ҳ-$2&#,#50#1'"#,2'*%-4#0,+#,21712#+',30)#7T,2&'1!-,2#62Q 0#1307","#01#!0#20'2Q,"#','1207-$$',,!#5#0#+#0%#"',2-1',%*#+','1207TTT The Turkish economy was affected by the US- The tension experienced in Turkey-US relations China trade war, Brexit developments, the Fed’s was reflected adversely to the markets due to the case decisions to raise interest rates, geopolitical risks, and of Pastor Andrew Brunson, and the speculative attacks also by some speculative exchange rate attacks. -
CAUCASUS ANALYTICAL DIGEST No. 86, 25 July 2016 2
No. 86 25 July 2016 Abkhazia South Ossetia caucasus Adjara analytical digest Nagorno- Karabakh www.laender-analysen.de/cad www.css.ethz.ch/en/publications/cad.html TURKISH SOCIETAL ACTORS IN THE CAUCASUS Special Editors: Andrea Weiss and Yana Zabanova ■■Introduction by the Special Editors 2 ■■Track Two Diplomacy between Armenia and Turkey: Achievements and Limitations 3 By Vahram Ter-Matevosyan, Yerevan ■■How Non-Governmental Are Civil Societal Relations Between Turkey and Azerbaijan? 6 By Hülya Demirdirek and Orhan Gafarlı, Ankara ■■Turkey’s Abkhaz Diaspora as an Intermediary Between Turkish and Abkhaz Societies 9 By Yana Zabanova, Berlin ■■Turkish Georgians: The Forgotten Diaspora, Religion and Social Ties 13 By Andrea Weiss, Berlin ■■CHRONICLE From 14 June to 19 July 2016 16 Research Centre Center Caucasus Research German Association for for East European Studies for Security Studies Resource Centers East European Studies University of Bremen ETH Zurich CAUCASUS ANALYTICAL DIGEST No. 86, 25 July 2016 2 Introduction by the Special Editors Turkey is an important actor in the South Caucasus in several respects: as a leading trade and investment partner, an energy hub, and a security actor. While the economic and security dimensions of Turkey’s role in the region have been amply addressed, its cross-border ties with societies in the Caucasus remain under-researched. This issue of the Cauca- sus Analytical Digest illustrates inter-societal relations between Turkey and the three South Caucasus states of Arme- nia, Azerbaijan, and Georgia, as well as with the de-facto state of Abkhazia, through the prism of NGO and diaspora contacts. Although this approach is by necessity selective, each of the four articles describes an important segment of transboundary societal relations between Turkey and the Caucasus. -
Unique Princess Islands' View Spacious Family Apartments in Peaceful Neighborhood Kartal
???????????? ?? ??????? ? ?????? / ???????? ????? ???????????? ?? Vartur https://www.vartur.com/ Unique Princess Islands' View Spacious Family Apartments in Peaceful Neighborhood Kartal ?????????? ?? ?????? ????????: Serif Nadi Varli ???: Serif Nadi ???????: Varli ???????? Vartur ????????: ??? ?????: ??????? ??? ??????? ???????: +90 (532) 242-8442 ???-????: http://www.vartur.com ??????: Turkey ???????? 34396 ??????: Ayazaga Mahallesi Cendere Caddesi No 109 ?????: Vadistanb ?????? ?????????? Unique Princess Islands' View Spacious Family Apartments in Peaceful ?????????: Neighborhood Kartal About Sehr-i Deniz ?ehr-i Deniz Kartal makes a difference with its wonderful sea view. The project, which consists of 176 apartments and 4 villas, promises a peaceful and enjoyable lifestyle. ?ehr-i Deniz residences, which will add color to your life with its wide social facilities, modern designed architecture, and privileged location, also provide a valuable investment opportunity in Kartal. The project, which includes various apartment types for every need and request, offers apartments ranging from 1-bedroom to 3-bedroom, and it consists of 2 blocks and 20 floors. In addition, comfortable living spaces await you in the project, where security service is also provided 24/7. The project has a total land area of 6,400 square meters and is home to 176 residences. In the housing project, which includes 2 villas as well as standard residences, all residences have a view of the Marmara Sea and the Prince Islands. It draws attention with its vertical architecture consisting of 2 blocks and 20 floors. But most of all, it will also save you time with its privileged location. Located only 10 minutes away from Kadikoy Metro Station and Marmaray station, Sehr-i Deniz is also 5 minutes away from the E-5 Highway. The project, which is 12 minutes away from Sabiha Gokcen Airport, is also 18 minutes away from the Eurasia Tunnel., Within your new home in the project, the unique view of the Marmara Sea will be brought to your home every day. -
DLA Piper. Details of the Member Entities of DLA Piper Are Available on the Website
EUROPEAN PPP REPORT 2009 ACKNOWLEDGEMENTS This Report has been published with particular thanks to: The EPEC Executive and in particular, Livia Dumitrescu, Goetz von Thadden, Mathieu Nemoz and Laura Potten. Those EPEC Members and EIB staff who commented on the country reports. Each of the contributors of a ‘View from a Country’. Line Markert and Mikkel Fritsch from Horten for assistance with the report on Denmark. Andrei Aganimov from Borenius & Kemppinen for assistance with the report on Finland. Maura Capoulas Santos and Alberto Galhardo Simões from Miranda Correia Amendoeira & Associados for assistance with the report on Portugal. Gustaf Reuterskiöld and Malin Cope from DLA Nordic for assistance with the report on Sweden. Infra-News for assistance generally and in particular with the project lists. All those members of DLA Piper who assisted with the preparation of the country reports and finally, Rosemary Bointon, Editor of the Report. Production of Report and Copyright This European PPP Report 2009 ( “Report”) has been produced and edited by DLA Piper*. DLA Piper acknowledges the contribution of the European PPP Expertise Centre (EPEC)** in the preparation of the Report. DLA Piper retains editorial responsibility for the Report. In contributing to the Report neither the European Investment Bank, EPEC, EPEC’s Members, nor any Contributor*** indicates or implies agreement with, or endorsement of, any part of the Report. This document is the copyright of DLA Piper and the Contributors. This document is confidential and personal to you. It is provided to you on the understanding that it is not to be re-used in any way, duplicated or distributed without the written consent of DLA Piper or the relevant Contributor. -
Hizli Rayli Sistemlerin Yolcu Taşima Kapasite Hesaplamalari Ve Türkiyedeki Benzer Sistemlerin Birbirleriyle Karşilaştirilmasi
HIZLI RAYLI SİSTEMLERİN YOLCU TAŞIMA KAPASİTE HESAPLAMALARI VE TÜRKİYEDEKİ BENZER SİSTEMLERİN BİRBİRLERİYLE KARŞILAŞTIRILMASI Ilgaz CANDEMİR_ , Serhan TANYEL_ SUMMARY Rail transit systems are found to be the most trusted transit systems all over the world. They have become one of the main parts of daily urban life as they provide, fast, safe and comfortable journey for passengers. If they are planned precisely, capacities up to10000-40000 passengers/hour can be achieved. They are also used as an important tool for to maintain well developed cities and provide dynamic city centers. In this study, some of the most important rail transit systems in Turkey are introduced. Their capacities tried to be determined by using different capacity calculation methods and the results are tired to be compared. ÖZET Dünyada halen en güvenilir ulaşõm modu, raylõ sistemlerdir. Gelişen teknolojinin yansõmasõ ile birlikte hõz, sinyalizasyon ve konfor problemlerini çözen kentsel raylõ sistemler büyük şehirler için vazgeçilmez olmuşlardõr. Planlama ,dizayn,araç ve ekipman seçimi, inşaat ve sonrasõnda çok titiz bir işletim isteyen metro hatlarõ ortalama 10000-40000 yolcu/saat kapasiteleri olan güçlü toplu taşõmacõlõk sistemlerdir. Raylõ sistemler ayrõca kentin homojen olarak gelişmesinin sağlanmasõnda önemli bir araç olarak görülmekte ve dinamik kent merkezlerinin oluşturulmasõnda etken olmaktadõrlar. Bu bildiride Türkiye’deki raylõ sistemleri hakkõnda kõsaca bilgi verildikten sonra, Türkiye’deki bazõ önemli raylõ ulaşõm sistemlerinin kapasiteleri farklõ yöntemlerle hesaplanarak, birbirleriyle karşõlaştõrõlmaya çalõşõlmõştõr. 1.GİRİŞ Dünyada 179 farklõ şehrin benimsendiği Metro ,hafif raylõ ve tramvay gibi kentiçi raylõ ulaşõm sistemleri, son yõllarda geç kalõnmasõna rağmen belediyelerimizin de rağbet ettiği ve ulaşõm politikalarõnõn baş hedefi haline gelen pahalõ inşaat yatõrõmlarõdõr. -
Travelling Across the Caucasus by Train Azerbaijan, Georgia And
Travelling across the Caucasus by train from Baku to Batumi (by way of Yerevan) Azerbaijan, Georgia and Armenia 1st to 25th July 2019 This journey seeks to connect the three very distinct countries which together form the Caucasus. What links them culturally? They were vibrant places during the later Russian Tzarist period. They have been places of seismic change: oil in Baku, Stalin was born in Georgia and the first Christain state was born in Armenia. They lie between hospitable Asia and the descendents of Byzantium. They also sit between Russia and Iran. They are places which have been influenced by their overbearing neighbours: invaded by Russia, Iran and the Ottoman Turks. Their geography varies from some of the highest mountains in Europe to deserts, from the Mediterranean climate of the Black Sea to the perpetually snowy peaks of the Greater Caucasus. The area may rightly claim to be the birthplace of the grapevine and very early mastery of goldsmithing. Nowadays a train line links these three fascinating countries. The party will be restricted to 11 of us in total. Travelling across the Caucasus by train The itinerary Day 3: After breakfast we’ll start the imposing mansions of the oil our Baku city tour. Visit Martyrs’ barons, built during the oil boom of Day 1: Flights from London and Alley, enjoy the panoramic view 1870-1914. After lunch we’ll drive to Edinburgh into Istanbul. Transfer by of Baku bay. Then we’ll visit the see the Gobustan rock paintings, 65 metro to Sultanahmet, the heart of Icheri Shekher (Inner town) with km from Baku, and then return to ancient Constantinople/Istanbul to its historical buildings and narrow the city by way of the Bibi Heybat our comfortable three star hotel for lanes. -
Trams Der Welt / Trams of the World 2021 Daten / Data © 2021 Peter Sohns Seite / Page 1
www.blickpunktstrab.net – Trams der Welt / Trams of the World 2021 Daten / Data © 2021 Peter Sohns Seite / Page 1 Algeria ... Alger (Algier) ... Metro ... 1435 mm Algeria ... Alger (Algier) ... Tram (Electric) ... 1435 mm Algeria ... Constantine ... Tram (Electric) ... 1435 mm Algeria ... Oran ... Tram (Electric) ... 1435 mm Algeria ... Ouragla ... Tram (Electric) ... 1435 mm Algeria ... Sétif ... Tram (Electric) ... 1435 mm Algeria ... Sidi Bel Abbès ... Tram (Electric) ... 1435 mm Argentina ... Buenos Aires, DF ... Metro ... 1435 mm Argentina ... Buenos Aires, DF - Caballito ... Heritage-Tram (Electric) ... 1435 mm Argentina ... Buenos Aires, DF - Lacroze (General Urquiza) ... Interurban (Electric) ... 1435 mm Argentina ... Buenos Aires, DF - Premetro E ... Tram (Electric) ... 1435 mm Argentina ... Buenos Aires, DF - Tren de la Costa ... Tram (Electric) ... 1435 mm Argentina ... Córdoba, Córdoba ... Trolleybus Argentina ... Mar del Plata, BA ... Heritage-Tram (Electric) ... 900 mm Argentina ... Mendoza, Mendoza ... Tram (Electric) ... 1435 mm Argentina ... Mendoza, Mendoza ... Trolleybus Argentina ... Rosario, Santa Fé ... Heritage-Tram (Electric) ... 1435 mm Argentina ... Rosario, Santa Fé ... Trolleybus Argentina ... Valle Hermoso, Córdoba ... Tram-Museum (Electric) ... 600 mm Armenia ... Yerevan ... Metro ... 1524 mm Armenia ... Yerevan ... Trolleybus Australia ... Adelaide, SA - Glenelg ... Tram (Electric) ... 1435 mm Australia ... Ballarat, VIC ... Heritage-Tram (Electric) ... 1435 mm Australia ... Bendigo, VIC ... Heritage-Tram -
Urban Flora and Ecological Characteristics of the Kartal District (Istanbul): a Contribution to Urban Ecology in Turkey
Scientific Research and Essay Vol. 5(2), pp. 183-200, 18 January, 2010 Available online at http://www.academicjournals.org/SRE ISSN 1992-2248 © 2010 Academic Journals Full Length Research Paper Urban flora and ecological characteristics of the Kartal District (Istanbul): A contribution to urban ecology in Turkey Volkan Altay1*, brahim lker Özyiit2 and Celal Yarci2 1Mustafa Kemal University, Science and Arts Faculty, Department of Biology, 31000, Antakya/Hatay/Turkey. 2Marmara University, Science and Arts Faculty, Department of Biology, 34722, Göztepe/Istanbul/Turkey. Accepted 22 October, 2009 For years, ecologists who have been trying to understand the relationship between the organisms with each other and/or their environments, have carried out their researches sometimes far from civilization, sometimes on a desolate island or in a tropical rainforest. Today, about half of the world’s population lives in urban areas. Therefore, most of the ecological problems have been brought to these areas. Nevertheless, in cities, preserving and maintaining natural habitats, providing a place not only to live but also to enjoy and to relax, are possible only by applying the principles and concepts of urban ecology in planning. This study presents the outcomes of unplanned urbanization and possible preventive measures, which could be taken in the Kartal District, Istanbul-Turkey. Moreover, in this study, different kinds of urban habitats within the frontiers of Kartal were described and an inventorial study containing native, exotic and cultivated plant taxa were realized. For this plant inventory of the Kartal District, all the greenery in the area were explored in different seasons. Plant samples were collected, dried, labelled and then determined according to standard herbarium procedures. -
An Analysis of Turkish Rail Transit Investments
AN ANALYSIS OF RAIL TRANSIT INVESTMENTS IN TURKEY: ARE THE EXPECTATIONS MET? A THESIS SUBMITTED TO THE GRADUATE SCHOOL OF NATURAL AND APPLIED SCIENCES OF MIDDLE EAST TECHNICAL UNIVERSITY BY ÖZGE ÖZGÜR IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE IN URBAN DESIGN IN CITY AND REGIONAL PLANNING NOVEMBER 2009 Approval of the thesis: AN ANALYSIS OF RAIL TRANSIT INVESTMENTS IN TURKEY: ARE THE EXPECTATIONS MET? submitted by ÖZGE ÖZGÜR in partial fulfillment of the requirements for the degree of Master of Science in City and Regional Planning Department, Urban Design, Middle East Technical University by, Prof. Dr. Canan Özgen _____________________ Dean, Graduate School of Natural and Applied Sciences Prof. Dr. Melih Ersoy _____________________ Head of Department, City and Regional Planning Assoc. Prof. Dr. Ela Babalık Sutcliffe _____________________ Supervisor, City and Regional Planning Dept., METU Examining Committee Members: Prof. Dr. Ali Türel _____________________ City and Regional Planning Dept., METU Assoc. Prof. Dr. Ela Babalık Sutcliffe _____________________ City and Regional Planning Dept., METU Assoc. Prof. Dr. Baykan Günay _____________________ City and Regional Planning Dept., METU Assist. Prof. Dr. Ebru Vesile Öcalır _____________________ Traffic Planning and Implementation Dept., Gazi University Turgay Günal, M.Sc. _____________________ Date: 18.11.2009 ________________ iii I hereby declare that all information in this document has been obtained and presented in accordance with academic rules and ethical conduct. I also declare that, as required by these rules and conduct, I have fully cited and referenced all material and results that are not original to this work. Özge ÖZGÜR iii ABSTRACT AN ANALYSIS OF RAIL TRANSIT INVESTMENTS IN TURKEY: ARE THE EXPECTATIONS MET?* Özgür, Özge M.S., Department of City and Regional Planning, Urban Design Supervisor: Assoc. -
Trams Der Welt / Trams of the World 2020 Daten / Data © 2020 Peter Sohns Seite/Page 1 Algeria
www.blickpunktstrab.net – Trams der Welt / Trams of the World 2020 Daten / Data © 2020 Peter Sohns Seite/Page 1 Algeria … Alger (Algier) … Metro … 1435 mm Algeria … Alger (Algier) … Tram (Electric) … 1435 mm Algeria … Constantine … Tram (Electric) … 1435 mm Algeria … Oran … Tram (Electric) … 1435 mm Algeria … Ouragla … Tram (Electric) … 1435 mm Algeria … Sétif … Tram (Electric) … 1435 mm Algeria … Sidi Bel Abbès … Tram (Electric) … 1435 mm Argentina … Buenos Aires, DF … Metro … 1435 mm Argentina … Buenos Aires, DF - Caballito … Heritage-Tram (Electric) … 1435 mm Argentina … Buenos Aires, DF - Lacroze (General Urquiza) … Interurban (Electric) … 1435 mm Argentina … Buenos Aires, DF - Premetro E … Tram (Electric) … 1435 mm Argentina … Buenos Aires, DF - Tren de la Costa … Tram (Electric) … 1435 mm Argentina … Córdoba, Córdoba … Trolleybus … Argentina … Mar del Plata, BA … Heritage-Tram (Electric) … 900 mm Argentina … Mendoza, Mendoza … Tram (Electric) … 1435 mm Argentina … Mendoza, Mendoza … Trolleybus … Argentina … Rosario, Santa Fé … Heritage-Tram (Electric) … 1435 mm Argentina … Rosario, Santa Fé … Trolleybus … Argentina … Valle Hermoso, Córdoba … Tram-Museum (Electric) … 600 mm Armenia … Yerevan … Metro … 1524 mm Armenia … Yerevan … Trolleybus … Australia … Adelaide, SA - Glenelg … Tram (Electric) … 1435 mm Australia … Ballarat, VIC … Heritage-Tram (Electric) … 1435 mm Australia … Bendigo, VIC … Heritage-Tram (Electric) … 1435 mm www.blickpunktstrab.net – Trams der Welt / Trams of the World 2020 Daten / Data © 2020 Peter Sohns Seite/Page -
An Earthquake Gap South of Istanbul
ARTICLE Received 23 Jan 2013 | Accepted 9 May 2013 | Published 18 Jun 2013 DOI: 10.1038/ncomms2999 An earthquake gap south of Istanbul Marco Bohnhoff1,2, Fatih Bulut1, Georg Dresen1, Peter E. Malin3, Tuna Eken1 & Mustafa Aktar4 Over the last century the North Anatolian Fault Zone in Turkey has produced a remarkable sequence of large earthquakes. These events have now left an earthquake gap south of Istanbul and beneath the Marmara Sea, a gap that has not been filled for 250 years. Here we investigate the nature of the eastern end of this gap using microearthquakes recorded by seismographs primarily on the Princes Islands offshore Istanbul. This segment lies at the western terminus of the 1999 Mw7.4 Izmit earthquake. Starting from there, we identify a 30-km-long fault patch that is entirely aseismic down to a depth of 10 km. Our evidence indicates that this patch is locked and is therefore a potential nucleation point for another Marmara segment earthquake—a potential that has significant natural hazards implications for the roughly 13 million Istanbul residents immediately to its north. 1 Helmholtz-Centre Potsdam German Centre for Geosciences GFZ, Telegrafenberg, 14473 Potsdam, Germany. 2 Department of Earth Sciences, Freie Universita¨t Berlin, Malteser Strasse 74-100, 12249 Berlin, Germany. 3 Institute of Earth Science and Engineering, University of Auckland, Auckland, New Zealand. 4 Kandilli Observatory and Earthquake Research Institute, Bogazici University, 34342 Bebek, Cengelko¨y, Istanbul, Turkey. Correspondence and requests for materials should be addressed to M.B. (email: [email protected]). NATURE COMMUNICATIONS | 4:1999 | DOI: 10.1038/ncomms2999 | www.nature.com/naturecommunications 1 & 2013 Macmillan Publishers Limited.