Estimating the slip rate in the North Tabriz Fault using focal mechanism data and GPS velocity field

IF 0.9 Q4 REMOTE SENSING
Milad Salmanian, Asghar Rastbood, M. Hossainali
{"title":"Estimating the slip rate in the North Tabriz Fault using focal mechanism data and GPS velocity field","authors":"Milad Salmanian, Asghar Rastbood, M. Hossainali","doi":"10.1515/jogs-2022-0167","DOIUrl":null,"url":null,"abstract":"\n This study delves into slip distribution on the North Tabriz Fault (NTF), a critical aspect of seismic hazard analysis due to its proximity to the Tabriz metropolis. The study operates within a uniform elastic half-space, maintaining constant values for fault geometry and regional rheological parameters throughout the research. To calculate strain boundary conditions, permanent and periodic global positioning system (GPS) data from the northwest region were utilized. The fault was constrained perpendicularly while allowing tangential movement, facilitating the determination of its annual slip rate using the boundary element method, with the Okada analytical model serving as the fundamental solution. The findings underscore the intricate relationship between the fault’s slip rate and boundary conditions, revealing a predominant right-lateral strike-slip motion. The study offers two slip rate assessments, obtained through earthquake focal mechanisms and GPS velocity data, yielding values of 5 and 5.5 \n \n \n \n \n \n mm\n \n /\n \n year\n \n \n \n {\\rm{mm}}/{\\rm{year}}\n \n , respectively. Importantly, the alignment of these calculated slip rates with paleo-seismological data underscores the credibility of the results generated via the boundary element method, distinguishing it as a reliable approach when compared to other numerical and analytical techniques. This research provides valuable insights into the behavior and slip dynamics of the NTF, which is pivotal for assessing seismic risks.","PeriodicalId":44569,"journal":{"name":"Journal of Geodetic Science","volume":null,"pages":null},"PeriodicalIF":0.9000,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Geodetic Science","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1515/jogs-2022-0167","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"REMOTE SENSING","Score":null,"Total":0}
引用次数: 0

Abstract

This study delves into slip distribution on the North Tabriz Fault (NTF), a critical aspect of seismic hazard analysis due to its proximity to the Tabriz metropolis. The study operates within a uniform elastic half-space, maintaining constant values for fault geometry and regional rheological parameters throughout the research. To calculate strain boundary conditions, permanent and periodic global positioning system (GPS) data from the northwest region were utilized. The fault was constrained perpendicularly while allowing tangential movement, facilitating the determination of its annual slip rate using the boundary element method, with the Okada analytical model serving as the fundamental solution. The findings underscore the intricate relationship between the fault’s slip rate and boundary conditions, revealing a predominant right-lateral strike-slip motion. The study offers two slip rate assessments, obtained through earthquake focal mechanisms and GPS velocity data, yielding values of 5 and 5.5 mm / year {\rm{mm}}/{\rm{year}} , respectively. Importantly, the alignment of these calculated slip rates with paleo-seismological data underscores the credibility of the results generated via the boundary element method, distinguishing it as a reliable approach when compared to other numerical and analytical techniques. This research provides valuable insights into the behavior and slip dynamics of the NTF, which is pivotal for assessing seismic risks.
利用焦点机制数据和 GPS 速度场估算北大不里士断层的滑移率
本研究深入探讨了北大不里士断层(NTF)的滑移分布,由于该断层靠近大不里士大都市,因此是地震危险分析的一个重要方面。研究在均匀弹性半空间内进行,在整个研究过程中保持断层几何形状和区域流变参数的恒定值。为了计算应变边界条件,利用了西北地区的永久性和周期性全球定位系统(GPS)数据。在允许切向运动的同时,对断层进行了垂直约束,从而便于使用边界元方法确定其年滑移率,并将冈田分析模型作为基本解决方案。研究结果强调了断层滑移率与边界条件之间错综复杂的关系,揭示了主要的右侧走向滑移运动。研究通过地震焦点机制和全球定位系统速度数据获得了两种滑移率评估,得出的数值分别为 5 和 5.5 毫米/年 {\rm{mm}}/{\rm{year}} 。 分别为 5 毫米/年和 5.5 毫米/年。重要的是,这些计算出的滑动率与古地震学数据相吻合,强调了通过边界元方法得出的结果的可信度,与其他数值和分析技术相比,边界元方法是一种可靠的方法。这项研究为了解 NTF 的行为和滑动动态提供了宝贵的见解,这对于评估地震风险至关重要。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
Journal of Geodetic Science
Journal of Geodetic Science REMOTE SENSING-
CiteScore
1.90
自引率
7.70%
发文量
3
审稿时长
14 weeks
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信