US-Turkey Cooperative Research: Post-Seismic Deformation for the 1999 IZMIT/DUZCE Turkey Earthquake Sequence

美国-土耳其合作研究：1999 年 IZMIT/DUZCE 土耳其地震序列的震后变形

• 批准号: 0001143
• 负责人: Robert Reilinger
• 金额: $ 5.5万
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-09-01 至 2004-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0001143&HistoricalAwards=false
• 关键词: US; Turkey; Cooperative; Research; Post

0001143ReilingerDescription: This award is to support the collaboration of Dr. Robert Reilinger, Principal Research Scientist, Earth Resources Laboratory, Department of Earth, Atmospheric, and Planetary Sciences at Massachusetts Institute of Technology, Cambridge, Massachusetts, Dr. Aykut A. Barka, Professor of Geology at Istanbul Technical University, Istanbul, Turkey, and Dr. Semih Ergintav, the Marmara Research Center, Gebza, Turkey in research to monitor and analyze post-seismic deformation for the 1999 Turkey earthquakes. Other collaborators include Dr. Roland Burgmann, Department of Geology and Geophysics, University of California, Berkeley, California, and Dr. Kurt Feigl, Centre National de la Recherche Scientifique, Toulouse, France. The 1999 earthquakes in Izmit (M=7.4) and Duzce (M=7.1) resulted in continuous surface break along a 150-km segment of the western North Anatolian fault, with right-lateral surface offsets reaching 5 m. This research builds on earlier studies of strain accumulation along the fault system (1988-1999) and recent studies of co-seismic and post-seismic deformation for the Izmit event. Ongoing work supported primarily by the Turkish partners to define the details of the Duzce earthquake co-seismic fault slip will be critical to the modeling effort. The tight constraints on secular strain and co-seismic fault slip for these events and the detailed monitoring of the early phase of post-seismic motions provide an important opportunity to develop the observations needed to constrain models of after-slip and viscoelastic relaxation. Distinguishing the possible contributions of these mechanisms has implications for the rheology of the continental lithosphere and localized rheology in the fault zone. The results will enhance our understanding of the mechanics of earthquake cycle in this and similar tectonic regions (such as the San Andreas fault).Scope: This project will support important collaborative research for which the primary support is provided by NSF's Division of Earth Sciences. This award will support the travel, living expenses and field expenses for the US scientists while in Turkey and partial support for the foreign scientists while visiting MIT. The latters' participation in field research and meetings at MIT is expected to lead to improvement in the fieldwork and in the interpretation of the results obtained and the conclusions to be reached. The project fits well with the objective of the Division of International Programs for encouraging mutually beneficial collaboration on research of important scientific problems. Funding for this project is provided by the Division of International Programs and the Division of Earth Sciences.

0001143 ReilingerDescription：该奖项是为了支持麻省理工学院地球、大气和行星科学系地球资源实验室首席研究科学家Robert Reilinger博士、土耳其伊斯坦布尔技术大学地质教授Aykut A.Barka博士和土耳其Gebza马尔马拉研究中心的Semih Ergin tav博士在监测和分析1999年土耳其地震震后变形方面的合作。其他合作者包括加州大学伯克利分校地质和地球物理学系的Roland Burgmann博士和法国图卢兹国家科学中心的Kurt Feigl博士。1999年在伊兹米特(M=7.4)和杜兹(M=7.1)发生的地震导致北安纳托利亚断裂西段150公里长的地表连续破裂，地表右旋距达到5m。这项研究建立在早期(1988-1999年)沿断层系统应变积累的研究和伊兹米特事件的同震和震后变形研究的基础上。目前主要由土耳其合作伙伴支持的确定Duzce地震同震断层滑动细节的工作将对建模工作至关重要。对这些事件的长期应变和同震断层滑动的严格约束，以及对震后运动早期阶段的详细监测，为发展约束后滑动和粘弹性松弛模型所需的观测提供了重要机会。区分这些机制的可能贡献对大陆岩石圈的流变学和断裂带的局部流变学具有重要意义。研究结果将加深我们对该构造区域和类似构造区域(如圣安德烈亚斯断层)地震周期机制的理解。范围：该项目将支持重要的合作研究，主要支持由NSF地球科学部提供的主要支持。该奖项将资助美国科学家在土耳其期间的旅费、生活费和实地费用，以及对外国科学家访问麻省理工学院期间的部分支持。后者参与实地研究和麻省理工学院的会议，可望改进实地工作，并对所取得的结果和将要得出的结论进行解释。该项目很好地符合国际方案司鼓励在重要科学问题研究方面开展互利合作的目标。该项目的资金由国际项目部和地球科学部提供。