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The interactive chart above shows continuous soil CO₂ measurements from the VPPC monitoring station at Poás volcano, Costa Rica. This high-frequency data provides crucial insights into volcanic degassing processes and potential changes in volcanic activity.
Location: North-east rim of the summit crater, Poás volcano, Costa Rica
Installation Date: November 2023 (AVERT project)
Instrumentation:
- Vaisala CARBOCAP GMP343 probe
- Equipped with soil probe adapter
- Infrared light absorption measurement system
- Temperature and humidity compensation
Data Collection:
- Continuous CO2 concentration measurements
- Infrared light absorption by CO2 in soil
- Temperature-compensated measurements
- Static compensation for humidity and pressure
Network Role:
- Part of soil monitoring network at Poás volcano
- Measures diffuse CO2 degassing from soil
- Provides additional measure of CO2 concentrations in shallow surface
- Contributes to understanding gas emissions before atmospheric dilution
Site Characteristics:
- Located north of San José, Costa Rica
- Large basaltic-andesitic stratovolcano
- Features hot, acidic crater lake and shallow hydrothermal system
- Popular tourist destination and National Park
Data Access:
- Soil CO2 data available through AVERT monitoring systems
- Part of comprehensive volcanic monitoring network
- Data used for gas emission studies
Additional Infrastructure:
- Co-located with broadband seismometer
- Co-located with 3-component fluxgate magnetometer
- Part of AVERT network with radio telemetry
Monitoring Capabilities:
- Diffuse CO2 degassing measurement
- Soil gas concentration monitoring
- Integration with other soil parameters
- Potential precursor signal detection
- Low-cost monitoring solution
Research Findings:
- CO2 concentrations correlate with seismic amplitudes
- Both CO2 and seismic amplitudes increase before elevated activity
- Chemistry of CO2 confirmed to be of magmatic origin
- Provides valuable supplemental monitoring data
