Seismic imaging of North Anatolian Fault (NAF) in the eastern Marmara region,Turkey

N. G. Okut Toksoy*, B. İnanç, H. Kurt

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Seismic refraction and reflection profiles were acquired on two N-S directed crossing North Anatolian Fault (NAF) on the land area western of Sapanca Lake in October 2016. Buffalo gun source and Geometrics Geode acquisition system were used with asymmetrical split-spread seismic array. First arrivals were picked and travel time tomography inversion was applied for refraction data analysis. Shallow undulating layers were observed in the P-wave velocity sections suggesting the deeper faults of the NAF zone. Moreover, conventional seismic reflection data processing steps were applied to get stacked sections. Nearly vertical seismic discontinuities in a wide fractured zone were figured out from the sections by considering 1999 İzmit earthquake surface rupture. Deeper geometrical features of the faults illustrate a flowerlike structure. Thus, we interpret NAF from combination of undulated near surface layers by refraction and deeper subsurface geometry by reflection imaging.

Original languageEnglish
Title of host publication24th European Meeting of Environmental and Engineering Geophysics
PublisherEuropean Association of Geoscientists and Engineers, EAGE
ISBN (Electronic)9789462822634
DOIs
Publication statusPublished - 9 Sept 2018
Event24th European Meeting of Environmental and Engineering Geophysics - Porto, Portugal
Duration: 9 Sept 201813 Sept 2018

Publication series

Name24th European Meeting of Environmental and Engineering Geophysics

Conference

Conference24th European Meeting of Environmental and Engineering Geophysics
Country/TerritoryPortugal
CityPorto
Period9/09/1813/09/18

Bibliographical note

Publisher Copyright:
© 2019 24th European Meeting of Environmental and Engineering Geophysics. All rights reserved.

Funding

This study was carried out with the project number ITU-BAP39632, supported by ITU Scientific Research Projects Unit. We thank to TÜBİTAK MAM Earth and Marine Sciences Institute (EMSI) Active Tectonics Research Group for collecting the data. Echos 15.5 is used for seismic processing, thanks to Paradigm Geophysical for free updates. We thank to Turkish Petroleum Data Processing Department for supporting processing facilities.

FundersFunder number
ITU Scientific Research Projects Unit
Bilimsel Araştirma Projeleri Birimi, Istanbul ÜniversitesiBAP39632

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