Subducted plate geometry, age, and subduction earthquakes beneath Sumatra

The datasets provided include key geophysical data focusing on seismic activity along specific profiles (A-E), with each profile corresponding to different sections of the subduction zone. The Data Frames for both dip and age provide critical information on the angle of the subducting plate and its geological age, respectively, which influence seismic behavior along the trench. The suma_seafloor_age dataset provides the age of the seafloor in the region, contributing to understanding the subduction process. The suma_slab2_dep dataset represents the depth of the subducting slab. The suma_slab2_dip dataset gives the dip angle of the subducting plate. The correlation results for age and dip include statistical measures such as Pearson’s r, p-value, slope, intercept, R-squared, and standard error, offering insights into the relationships between these factors and seismic depth. The GCMT Thrust data captures thrust faulting mechanisms along the trench. The USGS Suma2000 data contains earthquake magnitude and focal depth information from 2000 to 2025, providing a comprehensive view of seismicity along the region.

本次提供的数据集涵盖核心地球物理数据，重点关注A-E共5条特定剖面沿线的地震活动，每条剖面对应俯冲带的不同区段。倾角与年龄对应数据框分别提供了俯冲板片的倾角及其地质年代的关键信息，二者均会影响海沟沿线的地震活动特征。suma_seafloor_age数据集提供了研究区域的海底年龄数据，有助于深化对俯冲过程的认知。suma_slab2_dep数据集表征俯冲板片的深度信息。suma_slab2_dip数据集给出了俯冲板片的倾角参数。年龄与倾角的相关性分析结果包含皮尔逊相关系数（Pearson’s r）、p值、斜率、截距、决定系数（R-squared）以及标准误等统计指标，可用于解析上述因素与地震震源深度之间的关联机制。GCMT逆冲数据记录了海沟沿线的逆冲断裂活动机制。USGS Suma2000数据集包含2000年至2025年的地震震级与震源深度信息，可全面呈现该区域的地震活动性分布特征。