Long term seismic observation using ocean bottom seismographs in Marmara Sea, Turkey

Narumi Takahashi1, Ali Pinar2, Dogan Kalafat2, Yojiro Yamamoto3, Seckin Citak4, Mustafa Comoglu2, Özkan Çok2, Zafer Ogutcu2, Murat Suvarikli2, Süleyman Tunç5, Cemil Gurbuz2, Nurcan Ozel2 and YoshiYuki Kaneda6, (1)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Kanagawa, Japan, (2)Bogazici Univ.KOERI, İstanbul, Turkey, (3)Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokohama, Japan, (4)JAMSTEC, Yokohama, Japan, (5)Sentez Earth and Structural Engineering, İstanbul, Turkey, (6)Nagoya University, Disaster mitigation center, Nagoya, Japan