A LiDAR and field study of surface rupture and post-seismic slip for the 6th April 2009 L'Aquila Earthquake (M6.3). (URGENCY GRANT)

对 2009 年 4 月 6 日拉奎拉地震 (M6.3) 的表面破裂和震后滑移进行激光雷达和现场研究。

• 批准号: NE/H003266/1
• 负责人: Kenneth McCaffrey
• 金额: $ 6.88万
• 依托单位: Durham University
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2009
• 资助国家: 英国
• 起止时间: 2009 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FH003266%2F1
• 关键词: LiDAR; field; study; surface; rupture

Normal faulting earthquakes produce coseismic vertical motions that have previously been observed to amplify during the days and weeks after the mainshock by a process known as 'postseismic creep' or 'after-slip'. It is vital to quantify the relative contributions of coseismic and postseismic motion in order to interpret (a) palaeoseismic observations where measurements of fault slip are made many years after the earthquake, or (b) historical documents where earthquake magnitude must be inferred from records of surface damage/shaking intensity, as without such constraints there is considerable uncertainty in the magnitude of the event implied by these data sets. Furthermore, if combined with other geodetic data sets, the amplitude, wavelength and timescales associated with such postseismic creep can also potentially constrain rheological changes and reloading of seismogenic faults. We will use LiDAR to scan a representative number of locations along the 6th April 2009 normal faulting earthquake rupture in L'Aquila in central Italy (M 6.3), in the immediate aftermath of the event and again in the coming weeks to quantify shallow after-slip. We will be accompanied by civil protection authorities (Dr. E. Vittori and his team; Head of Natural Hazards Unit at APAT - Agenzia per la Protezione dell'Ambiente e per i Servizi Technici, Rome; Dr. S. Barba and his team, Rome, Istituto Nazionale di Geofisica e Vulcanologia, Rome), who will help us to access sites, and who initiated mapping of ruptures immediately after the earthquake. We have established expertise in the earthquake geology of central Italy, LiDAR scanning, the mechanics of earthquakes and faulting and, moreover, this earthquake occurred in an area where we are currently working on earthquake recurrence as part of NERC grant (NE/E01545X/1).

正常断层地震产生同震垂直运动，这种运动以前被观察到在主震后的几天或几周内通过一个被称为“震后蠕变”或“震后滑动”的过程而放大。重要的是要量化同震和震后运动的相对贡献，以便解释（a）古地震观测，其中断层滑动的测量是在地震发生多年后进行的，或（B）历史文献，其中地震震级必须从地表破坏/震动强度的记录中推断出来，因为如果没有这样的约束，这些数据集所暗示的事件震级就有相当大的不确定性。此外，如果与其他大地测量数据集相结合，振幅，波长和时间尺度与这种震后蠕变也可能限制流变学的变化和重新加载的发震断层。我们将使用激光雷达扫描沿2009年4月6日在意大利中部的拉奎拉（M 6.3）的正常断层地震破裂的代表性数量的位置沿着，在事件发生后，并再次在未来几周内量化浅后滑。我们将由民防当局陪同（E博士）。Vittori及其团队;罗马APAT自然灾害部门负责人; S. Barba和他的团队，罗马，Istituto Nazionale di Geofisica e Vulcanologia，罗马），他们将帮助我们进入现场，并在地震后立即开始绘制破裂地图。我们在意大利中部的地震地质学、激光雷达扫描、地震和断层力学方面建立了专业知识，此外，这次地震发生在我们目前正在研究地震复发的地区，这是NERC赠款（NE/E01545 X/1）的一部分。

项目成果

Evaluating roughness scaling properties of natural active fault surfaces by means of multi-view photogrammetry

• DOI: 10.1016/j.tecto.2017.08.023
• 发表时间: 2017-10-16
• 期刊: TECTONOPHYSICS
• 影响因子: 2.9
• 作者: Corradetti, Amerigo;McCaffrey, Ken;Tavani, Stefano
• 通讯作者: Tavani, Stefano

Relationship between topography, rates of extension and mantle dynamics in the actively-extending Italian Apennines

积极扩张的意大利亚平宁山脉的地形、扩张速率和地幔动力学之间的关系

• DOI: 10.1016/j.epsl.2012.01.028
• 发表时间: 2012
• 期刊: Earth and Planetary Science Letters
• 影响因子: 5.3
• 作者: Faure Walker J

Orogen-scale uplift in the central Italian Apennines drives episodic behaviour of earthquake faults.

• DOI: 10.1038/srep44858
• 发表时间: 2017-03-21
• 期刊: Scientific reports
• 影响因子: 4.6
• 作者: Cowie PA;Phillips RJ;Roberts GP;McCaffrey K;Zijerveld LJ;Gregory LC;Faure Walker J;Wedmore LN;Dunai TJ;Binnie SA;Freeman SP;Wilcken K;Shanks RP;Huismans RS;Papanikolaou I;Michetti AM;Wilkinson M
• 通讯作者: Wilkinson M

The tectonic geomorphology of bedrock scarps on active normal faults in the Italian Apennines mapped using combined ground penetrating radar and terrestrial laser scanning

• DOI: 10.1016/j.geomorph.2014.03.011
• 发表时间: 2015-05-15
• 期刊: GEOMORPHOLOGY
• 影响因子: 3.9
• 作者: Bubeck, A.;Wilkinson, M.;Sammonds, P.
• 通讯作者: Sammonds, P.