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Location: Outer flank of Okmok volcano, Alaska
Installation Date: September 2022 (AVERT project)
Instrumentation:
- Tallysman VeraChoke 6100 GNSS antenna
- AlertGeomatics Resolute Polar receiver
- Shallow-drilled braced monument (most common type)
Data Collection:
- Position data recorded at two rates: 30 s (standard) and 1 s (high rate)
- High-rate data only telemetered during events of specific interest to minimize bandwidth consumption
Network Role:
- Part of the expanded GNSS network at Okmok volcano
- Helps constrain the depth and parameters of the deformation source
- Located on outer flank to provide broader coverage of deformation signals
Site Characteristics:
- Located on Umnak Island in the central Aleutian Arc
- “Closed-system” volcano with cycles of inflation and deflation
- Currently re-inflating since last eruption in 2008
- Site equipped with radome to protect from elements
Data Access:
Additional Infrastructure:
- Co-located with broadband seismometer
- Co-located with 3-component fluxgate magnetometer
- Part of AVO permanent monitoring network
