The utility of infrasound technology for detecting explosive eruptions is well established. However, many active volcanoes are currently monitored exclusively with seismic networks and lack infrasonic sensor networks. Here, we demonstrate the ability of template matching to automatically detect ground-coupled airwave signatures (infrasound signals recorded on seismometers), associated with mild to large explosive eruptions in continuous broadband displacement waveforms from Popocatépetl volcano, Mexico. As templates, we use five verified high-amplitude ground-coupled airwave signals that were recorded in November 2017 by both a temporary broadband infrasound array co-located with a broadband seismometer at station ATLI (15.8 km range) and a permanent broadband seismic monitoring station PPIG (4.9 km range). We systematically apply the template matching procedure to two years of continuous seismic records from PPIG station (2017–2018), to identify ground-coupled airwaves in a time span exceeding the operation time of the temporary infrasound array at ATLI. We identify 43 ground-coupled airwaves that occurred during the period of study and with absolute correlation coefficients of 0.5 ≤|R| < 0.8 (using templates of 100 s length). These events are in the catalog of Popocatépetl seismic activity reported by the Centro Nacional de Prevención de Desastres (CENAPRED). The results obtained with template matching using a small number of starting templates points to a ground-coupled airwave signature dominated by a repetitive and fairly stable seismo-acoustic explosion signature during the two-year time frame considered. Future work with an expanded number of templates should improve the results.

次声技术在检测爆炸性喷发方面的实用性已得到充分证实。然而，目前许多活火山仅使用地震网络进行监测，缺乏次声传感器网络。在这里，我们展示了模板匹配自动检测地面耦合空气波特征（地震仪上记录的次声信号）的能力，这些特征与墨西哥波波卡特佩特火山的连续宽带位移波形中的轻度到大型爆炸性喷发有关。作为模板，我们使用了 2017 年 11 月由临时宽带次声阵列与 ATLI 站（15.8 公里范围）的宽带地震仪和永久宽带地震监测站记录的五个经过验证的高幅度地面耦合无线电波信号PPIG（4.9 公里范围）。我们系统地将模板匹配程序应用于来自 PPIG 站（2017-2018）的两年连续地震记录，以识别超过 ATLI 临时次声阵列运行时间的时间跨度内的地面耦合无线电波。我们确定了研究期间发生的 43 个地面耦合无线电波，绝对相关系数为 0.5 ≤|R| < 0.8（使用 100 s 长度的模板）。这些事件在国家预防中心 (CENAPRED) 报告的波波卡特佩特地震活动目录中。使用少量起始模板通过模板匹配获得的结果表明，在所考虑的两年时间范围内，地面耦合电波特征由重复且相当稳定的地震声爆炸特征主导。未来使用更多模板的工作应该会改善结果。