3D Displacements and Strain from the 2023 February Turkey Earthquakes, version 1

This data set contains strain, motion magnitude, 3D displacements, and surface slip distributions from the 2023 February Türkiye Earthquakes. COMET presents 0.001 degree (~100 m) resolution 3D displacement fields, with associated uncertainties, jointly inverted from 4 tracks of Sentinel-1 range and azimuth offsets and a set of north and east displacements from Sentinel-2 pixel tracking. From the 3D displacement fields, we calculate 0.001-degree resolution horizontal motion magnitudes, from which we extract surface slip distribution along the two faults ruptured during the Mw7.8 and Mw7.5 earthquakes. Further calculation of a 0.01-degree resolution strain field from the east and north displacement fields highlights the surface ruptures caused by the two earthquakes.

本数据集涵盖2023年2月土耳其地震的应变、运动幅值、三维位移及地表滑动分布。COMET发布了空间分辨率为0.001度（约100米）的三维位移场，附带相关不确定性信息；该位移场由4轨哨兵1号（Sentinel-1）的距离向与方位向偏移量，以及通过哨兵2号（Sentinel-2）像素追踪技术获取的北向、东向位移数据集联合反演得到。基于上述三维位移场，我们计算得到空间分辨率为0.001度的水平运动幅值，并从中提取出矩震级（Moment Magnitude, Mw）7.8级与7.5级地震破裂的两条断层的地表滑动分布。进一步基于东向与北向位移场计算得到空间分辨率为0.01度的应变场，该场清晰凸显了两次地震引发的地表破裂。