EGS Collab Experiment 2: Microseismic Monitoring

Description

This dataset contains continuous seismic waveform data recorded during stimulation and thermal circulation tests for the Enhanced Geothermal Systems (EGS) Collab Experiment #2, conducted from February to September 2022 at the Sanford Underground Research Facility in Lead, South Dakota. This experiment aimed to study and validate models of geothermal systems by injecting high-pressure fluids into rock formations 1200-1500 meters below the surface, inducing microseismic events. The seismic monitoring system included 16 three-component accelerometers and a 24-channel hydrophone array, installed in boreholes surrounding the test area. Data were recorded at high sampling rates using a continuous waveform recording system to monitor seismic activity in real time. The dataset contains the raw data stored in binary format, with files named based on timestamps, and includes calibration certificates for some sensors to facilitate corrections to real units. Users are strongly advised to consult the accompanying detailed report, which outlines the experimental setup, sensor specifications, installation procedures, and data processing methods. The report also describes important nuances, such as the hardware filters on hydrophones, sensor calibration details, and the naming conventions for the recorded data. Proper use of this dataset may require familiarity with seismic data analysis tools, such as the Obspy Python package, and an understanding of the SEED naming conventions used for channel identification.

Resources

Name Format Description Link
33 Report detailing all aspects of the installation and collection of the data in this submission. https://gdr.openei.org/files/1607/EGS_Collab_Exp_2_MEQ_report_3-27-2023.pdf
21 This is a link to the data in the GDR Data Lake via an AWS S3 online data viewer. The data can also be access programmatically via the AWS CLI and tools like the boto3 Python library. Please see the attached report for details on file structures and naming conventions. https://data.openei.org/s3_viewer?bucket=gdr-data-lake&prefix=egs_collab%2Fexperiment_2%2Fpassive_seismic%2F
21 AWS public dataset program registry page for data released under the Department of Energy's (DOE) Geothermal Data Repository (GDR) Data Lake. The registry page contains information about dataset documentation, access, and contact, for each of the GDR Data Lake datasets. https://registry.opendata.aws/gdr-data-lake/
21 This is a link to an associated submission that contains a report and data collected for Continuous Active Source Seismic Monitoring (CASSM). That data was collected on the same sensor network, but only contains triggered event active-source data. The microseismic report found here references the CASSM data and report, so it is linked here as a reference for users. https://gdr.openei.org/submissions/1700

Tags

  • geophysics
  • seed
  • continuous-seismic
  • microseismic
  • microseismicity
  • continuous-waveform
  • circulation
  • surf
  • egs-collab
  • binary
  • 3c
  • borehole-array
  • obspy
  • accelerometer
  • stimulation
  • technical-report
  • hydrophone
  • waveform
  • raw-data
  • geothermal
  • energy

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