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Location: Okmok volcano, Alaska
Installation Date: May/June 2023 (AVERT project)
Instrumentation:
- Tallysman VeraChoke 6100 GNSS antenna
- AlertGeomatics Resolute Polar receiver
- Shallow-drilled braced monument
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
- Closes the gap to the south of the observed deformation source
- Contributes to the doubling of GNSS sites from pre-2022 levels
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
- Part of AVO permanent monitoring network
