Aseismic slip and seismogenic coupling in the Marmara Sea: What can we learn from onland geodesy?
Abstract Ever since the Mw7.4 Izmit earthquake in 1999, evaluation of seismic hazard associated with the last unbroken segments of the North Anatolian fault is capital. A strong controversy remains over whether Marmara fault segments are locked or are releasing strain aseismically. Using a Bayesian...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2017-04-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1002/2017GL072777 |
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| author | E. Klein Z. Duputel F. Masson H. Yavasoglu P. Agram |
| author_facet | E. Klein Z. Duputel F. Masson H. Yavasoglu P. Agram |
| author_sort | E. Klein |
| collection | DOAJ |
| description | Abstract Ever since the Mw7.4 Izmit earthquake in 1999, evaluation of seismic hazard associated with the last unbroken segments of the North Anatolian fault is capital. A strong controversy remains over whether Marmara fault segments are locked or are releasing strain aseismically. Using a Bayesian approach, we propose a preliminary probabilistic interseismic model constrained by published GPS data sets. The posterior mean model show that Ganos and Cinarcik segments are locked while creep is detected in the central portion of Marmara fault. Our analysis, however, reveals that creeping segments are associated with large model uncertainties, which mainly results from the sparsity of current geodetic observations. We then discuss how the GPS network can be improved to attain more reliable assessment of interseismic slip rates. With this purpose, we implement a network optimization procedure to identify the most favorable distribution of stations measuring strain accumulation in the Marmara Sea. |
| format | Article |
| id | doaj-art-ed62cc4c815e4e448b5ae229056103c1 |
| institution | OA Journals |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2017-04-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-ed62cc4c815e4e448b5ae229056103c12025-08-20T01:51:46ZengWileyGeophysical Research Letters0094-82761944-80072017-04-014473100310810.1002/2017GL072777Aseismic slip and seismogenic coupling in the Marmara Sea: What can we learn from onland geodesy?E. Klein0Z. Duputel1F. Masson2H. Yavasoglu3P. Agram4Institut de Physique du Globe; UMR 7516, Université de Strasbourg/EOST CNRS Strasbourg FranceInstitut de Physique du Globe; UMR 7516, Université de Strasbourg/EOST CNRS Strasbourg FranceInstitut de Physique du Globe; UMR 7516, Université de Strasbourg/EOST CNRS Strasbourg FranceGeomatics Engineering ITU Istanbul TurkeyJet Propulsion Laboratory Pasadena California USAAbstract Ever since the Mw7.4 Izmit earthquake in 1999, evaluation of seismic hazard associated with the last unbroken segments of the North Anatolian fault is capital. A strong controversy remains over whether Marmara fault segments are locked or are releasing strain aseismically. Using a Bayesian approach, we propose a preliminary probabilistic interseismic model constrained by published GPS data sets. The posterior mean model show that Ganos and Cinarcik segments are locked while creep is detected in the central portion of Marmara fault. Our analysis, however, reveals that creeping segments are associated with large model uncertainties, which mainly results from the sparsity of current geodetic observations. We then discuss how the GPS network can be improved to attain more reliable assessment of interseismic slip rates. With this purpose, we implement a network optimization procedure to identify the most favorable distribution of stations measuring strain accumulation in the Marmara Sea.https://doi.org/10.1002/2017GL072777NAFGPSinterseismic deformationBayesian modeling |
| spellingShingle | E. Klein Z. Duputel F. Masson H. Yavasoglu P. Agram Aseismic slip and seismogenic coupling in the Marmara Sea: What can we learn from onland geodesy? Geophysical Research Letters NAF GPS interseismic deformation Bayesian modeling |
| title | Aseismic slip and seismogenic coupling in the Marmara Sea: What can we learn from onland geodesy? |
| title_full | Aseismic slip and seismogenic coupling in the Marmara Sea: What can we learn from onland geodesy? |
| title_fullStr | Aseismic slip and seismogenic coupling in the Marmara Sea: What can we learn from onland geodesy? |
| title_full_unstemmed | Aseismic slip and seismogenic coupling in the Marmara Sea: What can we learn from onland geodesy? |
| title_short | Aseismic slip and seismogenic coupling in the Marmara Sea: What can we learn from onland geodesy? |
| title_sort | aseismic slip and seismogenic coupling in the marmara sea what can we learn from onland geodesy |
| topic | NAF GPS interseismic deformation Bayesian modeling |
| url | https://doi.org/10.1002/2017GL072777 |
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