> ## Documentation Index
> Fetch the complete documentation index at: https://data.avert.ldeo.columbia.edu/llms.txt
> Use this file to discover all available pages before exploring further.

# Instruments

> MEMS gravimeter at Poas volcano

The gravimeter deployed at Poas is a **Wee-g MEMS micro-gravimeter**, developed by the University of Glasgow. It is a continuous instrument that outputs data via a serial communication interface, and was integrated into the AVERT platform during the 2024 field workshop.

This represents the **first continuous MEMS gravimeter deployed on any volcano worldwide**. The instrument was added to the VPMI hub site as a test of the AVERT system's extensibility to new sensor types.

<AccordionGroup>
  <Accordion title="Instrument">
    MEMS-based Wee-g micro-gravimeter (University of Glasgow). Continuous measurements via serial communication interface.
  </Accordion>

  <Accordion title="Mode of Operation">
    Continuous recording, integrated into the AVERT node control software alongside other instruments at VPMI.
  </Accordion>

  <Accordion title="Complementarity">
    Paired with GNSS and gas observations to constrain processes in the hydrothermal system and shallow magmatic reservoir at Poas.
  </Accordion>
</AccordionGroup>