汶川大地震（2008.05.12）余震分类数据集

2008年5月12日汶川8.0级大地震发生以后，余震活动非常频繁，如何快速准确地识别余震对于地震监测预警非常关键。基于2008年7-9月汶川及其邻区（30°N-33.5°N，102°E-106°E）龙门山断裂带上16个宽频带地震台站记录的余震波形记录，从1765个余震事件（1.0-6.6级）记录到的事件波形中人工挑选了9,909段作为正样本，并从剩下的连续波形中随机截取了10,939段噪声波形作为负样本，构建了汶川大地震（2008.5.12）余震分类数据集。该数据集包括：（1）正样本（Positive_sample）；（2）正样本的信噪比（SNR_positive.txt）；（3）负样本（Negative_sample）；（4）负样本的信噪比（SNR_negative.txt）；（5）台站列表（Sta_Wenchuan.data）；（6）余震事件定位结果（Epicenter_Wenchuan.dat）。数据集存储为.dat、.data、.txt和.SLIST格式，由20854个数据文件组成，数据量为3.14 GB（压缩为5个文件，1.20 GB）。基于该数据集的研究成果发表在《地球物理学报》2019年第62卷第1期，相关算法已开源至https://github.com/mingzhaochina/ConvNetQuake。

Following the Mw 8.0 Wenchuan great earthquake on May 12, 2008, extremely frequent aftershock activities were observed. Rapid and accurate aftershock identification is critical for earthquake monitoring and early warning. Based on aftershock waveform records from 16 broadband seismic stations on the Longmenshan Fault Zone in Wenchuan and its adjacent areas (30°N–33.5°N, 102°E–106°E) during July–September 2008, we manually selected 9,909 waveform segments from 1,765 aftershock events (magnitude 1.0–6.6) as positive samples, and randomly extracted 10,939 noise waveform segments from the remaining continuous waveforms as negative samples, thus constructing the aftershock classification dataset for the 2008 Wenchuan earthquake. This dataset includes: (1) Positive samples; (2) Signal-to-noise ratio files of positive samples (SNR_positive.txt); (3) Negative samples; (4) Signal-to-noise ratio files of negative samples (SNR_negative.txt); (5) Station list (Sta_Wenchuan.data); (6) Aftershock event location results (Epicenter_Wenchuan.dat). The dataset is stored in .dat, .data, .txt and .SLIST formats, consisting of 20,854 data files with an uncompressed size of 3.14 GB (compressed into 5 files with a total size of 1.20 GB). Research based on this dataset has been published in *Acta Geophysica Sinica*, Volume 62, Issue 1, 2019, and the relevant algorithm has been open-sourced at https://github.com/mingzhaochina/ConvNetQuake.

搜集汇总

背景与挑战

背景概述

该数据集是2008年汶川大地震的余震分类数据集，基于2008年7月至9月龙门山断裂带及周边16个地震台站记录的波形数据构建，包含9909个正样本和10939个负样本，总计20854个文件，数据量3.14 GB。数据集旨在支持地震监测和预警研究，相关算法已开源，研究成果发表于《地球物理学报》。