*5.2. The Efficiency of This Method in Processing Passive Seismic Datasets*

The amount of passive seismic data was relatively large. Taking the Sichuan dataset as an example, the amount of data collected by 120 geophones for 1 ms was approximately 40 GB a day. When we used this method to process the 1-h data selected by each receiver, it took more than 20 min to preprocess each trace, and it took 40 h to complete the whole 1-h dataset of 120 receivers; thus, the calculation efficiency was relatively low. Therefore, further improvement of this method for calculation efficiency is required before applying it to larger passive seismic datasets.
