Engineering Strong Motion Database (ESM) flatfile

The Engineering Strong-Motion (ESM) flatfile is a parametric table which contains veri- fied and reliable metadata and intensity measures of manually processed waveforms included in the ESM database. The flatfile has been developed within the Seismology The- matic Core Service of EPOS-IP (European Plate Observing System Implementation Phase) and it is disseminated throughout a web portal (http://esm.mi.ingv.it/flatfile-2018/flatfile. php) for research and technical purposes. The adopted criteria for flatfile compilation aim to collect strong motion data and related metadata in a uniform, updated, traceable and quality-checked way to develop Ground Motion Models (GMMs) for Probabilistic Seismic Hazard Assessment (PSHA) and engineering applications. In this paper, we present the characteristics of ESM flatfile in terms of recording, event and station distributions, and we discuss the most relevant features of the Intensity Measures (IMs) of engineering interest included in the table. The dataset for flatfile compilation includes 23,014 recordings from 2179 earthquakes and 2080 stations from Europe and Middle-East. The events are charac- terized by magnitudes in the range 3.5–8.0 and refer to different tectonics regimes, such as shallow active crustal and subduction zones. Intensity measures include peak and inte- gral parameters and duration of each waveform. The spectral amplitudes of the (5% damp- ing) acceleration and displacement response are provided for 36 periods, in the interval 0.01–10 s, as well as the 103 amplitudes of the Fourier spectrum for the frequency range 0.04–50 Hz. Several statistics are shown with reference to the most significant metadata for GMMs calibrations, such as moment magnitude, focal depth, several distance metrics, style of faulting and parameters for site characterization. Furthermore, we also compare and explain the most relevant differences between the metadata of ESM flatfile with those provided by the previous flatfile derived in RESORCE (Reference Database for Seismic Ground Motion in Europe) project.

工程强震动（Engineering Strong-Motion, ESM）扁平数据集是一款参数化表格，收纳了ESM数据库中收录的经人工处理波形的经验证可靠元数据与强度指标。该数据集由欧洲板块观测系统实施阶段（European Plate Observing System Implementation Phase, EPOS-IP）的地震学主题核心服务研发，并通过门户网站（http://esm.mi.ingv.it/flatfile-2018/flatfile.php）面向科研与技术用途发布。
数据集编制所采用的标准旨在以统一、可更新、可溯源且经过质量核查的方式收集强震动数据及相关元数据，以开发用于概率地震危险性评估（Probabilistic Seismic Hazard Assessment, PSHA）与工程应用的地面运动模型（Ground Motion Models, GMMs）。
本文介绍了ESM扁平数据集在记录、事件与台站分布方面的特征，并探讨了该表格中收录的工程相关强度指标（Intensity Measures, IMs）的核心特性。
用于构建该数据集的样本涵盖来自欧洲与中东地区2080个台站、2179次地震的23014条记录。这些地震的震级介于3.5至8.0之间，涵盖浅源活动地壳、俯冲带等多种构造环境。
强度指标包含各波形的峰值参数、积分参数与持续时长。针对0.01至10秒的周期区间，本数据集提供了36个周期下（5%阻尼）的加速度与位移响应谱振幅；同时针对0.04至50赫兹的频率范围，提供了傅里叶频谱的103个振幅分量。
本文还展示了用于地面运动模型校准的关键元数据的相关统计量，包括矩震级、震源深度、多种距离度量指标、断层类型以及场地特征参数等。
此外，本文还对比并阐释了ESM扁平数据集的元数据与此前欧洲地震地面运动参考数据库（Reference Database for Seismic Ground Motion in Europe, RESORCE）项目产出的扁平数据集元数据之间的核心差异。

搜集汇总

背景与挑战

背景概述

该数据集是欧洲强震动数据库（ESM）的2018年参数表格，包含1969-2016年间手动处理的加速度计波形元数据和强度测量值，覆盖欧洲特定区域，震级≥4.0。数据以CSV格式提供，包括谱加速度、谱位移和傅里叶谱振幅参数，用于支持欧洲地震危险性评估和地面震动模型的开发与校准。