Recently, amid the pandemic of COVID-2019, the north-east Delhi region experienced two small earthquakes in a short span of 1 month; the first occurred on 12^th April 2020 (M_w 3.5) and the other on 10^th May 2020 (M_w 3.4). These events were followed by 4 aftershocks of magnitude M_w ≤ 3.0. We carried out morphotectonic (high stream length-gradient index) and static Coulomb stress failure analyses to delineate the hidden causative fault(s) in the region. In the study, ASTER DEM data of 30 m resolution and Survey of India (SoI) toposheets on 1:50,000 scales were used for morphotectonic analysis. The analysis depicted a very high stream length-gradient (SL) and fall in elevation in the epicentral area, suggesting the area to be tectonically active with a NE-SW trending fault line. In addition, the nature of static Coulomb failure stress contours for both the main events, M_w 3.5 and M_w 3.4, suggests an NNE-SSW trending high Coulomb stress regime. Such a high coulomb stress regime is obvious at the location where a high SL index and fall in elevation were marked, which clearly indicates the presence of NNE-SSW trending a causative fault, named ‘Khanpur-Japti fault’.

最近，在COVID-2019大流行中，东北德里地区在短短1个月内经历了两次小地震。第一次发生在2020年4月12^日（M _w 3.5），另一次发生在2020年5月10^日（M _w 3.4）。这些事件之后是4次M _w级余震≤3.0。我们进行了构造构造（高流长梯度指数）和静态库仑应力破坏分析，以描绘该地区隐藏的致病性断层。在这项研究中，使用30 m分辨率的ASTER DEM数据和1：50,000比例的印度调查（SoI）拓扑表进行形态构造分析。该分析表明，震中地区的水流高度梯度（SL）很高，并且海拔下降，表明该地区以NE-SW趋势断层线构造活动。此外，对于主事件M _w 3.5和M _w来说，静态库仑破坏应力等值线的性质3.4，表明NNE-SSW趋向于高库仑应力状态。如此高的库仑应力状态在高SL指数和高程下降明显的地方很明显，这清楚地表明NNE-SSW的存在导致了一个称为“ Khanpur-Japti断层”的致病性断层。