当前位置: X-MOL 学术Bull. Earthquake Eng. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Impact of rupture-plane uncertainty on earthquake hazard: observations from the 30 october 2020 Samos earthquake
Bulletin of Earthquake Engineering ( IF 4.6 ) Pub Date : 2021-04-15 , DOI: 10.1007/s10518-021-01099-9
Sinan Akkar , N. Merve Çağlar , Özkan Kale , Ufuk Yazgan , M. Abdullah Sandıkkaya

We assess the significance of rupture-plane uncertainty in the estimated ground-motion intensity measures (IMs) by using the centroid moment-tensor and fault-plane solutions as well as the ground-motion recordings of the 30 October 2020 Samos Earthquake. We sampled ground-motion fields using stochastically generated rupture planes by considering the uncertainties imposed from alternative fault-plane solutions to reach our objective. Our observations indicate that the compromise between rupture-plane uncertainty and variability in the predicted ground-motion IMs depends on the modeling complexity of the ground-motion predictive model (GMPM). It also depends on the spatial location of the site relative to the ruptured fault. This conclusive remark is important for modelers who perform regional or site-specific seismic hazard and risk analyses. The presented case studies are also useful for GMPM developers because the ground-motion models contain predictor parameters, the most ubiquitous one is source-to-site distance, that are affected from rupture-plane geometry. Depending on the level of model complexity, the number of predictor parameters affected from rupture-plane geometry can increase and therefore the estimated ground-motion IMs can become more prone to rupture-plane uncertainty. Confined to our case-specific observations, we intend to make some suggestions to hazard, risk, and GMPM modelers for the consideration of rupture-plane uncertainty at the end of the paper.



中文翻译:

破裂平面不确定性对地震危险的影响:2020年10月30日萨摩斯地震的观测

我们使用质心矩张量和断层平面解以及2020年10月30日萨摩斯地震的地面运动记录,评估了估计的地面运动强度测度(IMs)中破裂平面不确定性的重要性。我们考虑到了由替代断层平面解决方案带来的不确定性,使用随机产生的破裂平面对地震动场进行了采样,以达到我们的目标。我们的观察结果表明,破裂平面不确定性与预测的地面运动IM的可变性之间的折衷取决于地面运动预测模型(GMPM)的建模复杂性。这也取决于现场相对于破裂断层的空间位置。该结论对于执行区域或特定地点地震危险性和风险分析的建模人员很重要。提出的案例研究对GMPM开发人员也很有用,因为地面运动模型包含预测参数,其中最普遍的是受破裂平面几何形状影响的源到站点距离。根据模型复杂性的水平,受破裂平面几何形状影响的预测参数的数量可能会增加,因此估计的地面运动IM可能会更容易出现破裂平面不确定性。限于我们针对具体案例的观察,我们打算在本文结尾部分针对危险,风险和GMPM建模人员提出一些建议,以考虑破裂平面的不确定性。受到破裂平面几何形状的影响。根据模型复杂性的水平,受破裂平面几何形状影响的预测参数的数量可能会增加,因此估计的地面运动IM可能会更容易出现破裂平面不确定性。限于我们针对具体案例的观察,我们打算在本文结尾部分针对危险,风险和GMPM建模人员提出一些建议,以考虑破裂平面的不确定性。受到破裂平面几何形状的影响。根据模型复杂性的水平,受破裂平面几何形状影响的预测参数的数量可能会增加,因此估计的地面运动IM可能会更容易出现破裂平面不确定性。限于我们针对具体案例的观察,我们打算在本文结尾部分针对危险,风险和GMPM建模人员提出一些建议,以考虑破裂平面的不确定性。

更新日期:2021-04-15
down
wechat
bug