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Station Information

Location: Concorde Point, the south-easternmost point of Chuginadak Island, Cleveland volcano, Alaska Installation Date: Pre-existing site, part of AVO network Instrumentation:
  • Trillium Compact 120 s posthole analogue seismometer
  • 24-bit Centaur digitiser (Nanometrics Incorporated)
  • Direct burial method at ~1 m depth
  • Aligned with true north using compass compensated for magnetic declination
Data Collection:
  • Continuous broadband seismic data
  • High sensitivity for detecting micro-earthquakes
  • Part of permanent monitoring network
Network Role:
  • One of 5 permanent broadband seismometers at Cleveland
  • Contributes to Cleveland being officially “monitored” by AVO
  • Provides radial coverage of the central vent of Mount Cleveland
Site Characteristics:
  • Located on the Islands of Four Mountains in the central Aleutian Arc
  • “Open-vent” volcano with persistent gas plume
  • Co-located with 5-instrument infrasound array and webcam
Data Access:
  • Continuous seismic data available from EarthScope Data Management Center
  • Network code: AV (https://doi.org/10.7914/SN/AV)
  • Close to 100% data recovery rate
Additional Infrastructure:
  • Co-located with 5-instrument infrasound array
  • Co-located with webcam
  • Co-located with GNSS antenna
  • Part of AVO permanent monitoring network