标题： 从单个闭路电视摄像机直接估算地震源特性 显示英文标题

标题： Direct Estimation of Earthquake Source Properties from a Single CCTV Camera

摘要： 我们展示了首次对自然地震破裂过程中滑动速率函数的直接测量结果，该测量是在2025年3月28日发生的Mw 7.7 Mandalay地震（缅甸）期间记录的。 这一测量是基于一段由位于断层迹线几米远的安全摄像头捕捉到的地表破裂视频影像完成的。 通过直接图像分析，我们在每个时间步长上测量了相对滑动，并推导出滑动速率。 我们的结果显示局部滑动持续时间为1.3秒，地表滑动速度在滑动前锋经过时峰值接近3米/秒，累积滑动量约为3米。这些发现表明地震破裂具有脉冲特性，至少在记录位置是如此。 利用解析破裂模型，我们获得了该脉冲的完整力学特性，包括能量释放率。 显示英文摘要

摘要： We present the first direct measurement of the slip-rate function during a natural coseismic rupture, recorded during the 28 March 2025, Mw 7.7 Mandalay earthquake (Myanmar). This measurement was made on a video footage of the surface rupture captured by a security camera located only meters away from the fault trace. Using direct image analysis, we measured the relative slip at each time step and deduced the slip rate. Our results show a local slip duration of 1.3 s, and that the surface slip velocity peaked at nearly 3 m/s during the passage of the slip front, with a cumulative slip of approximately 3 m. These findings demonstrate the pulse-like nature of the seismic rupture, at least at the location of the recording. Using analytical rupture models, we obtain the complete mechanical properties of this pulse including the energy release rate.