Remote sensing measurements, from passive optical to active radar sensors, have become classical techniques to study and monitor Earth’s active volcanoes. They are commonly used by many volcano observatories and scientists around the World as obvious monitoring tools and complements to other ground-based geophysical techniques, such as GNSS, seismic, infrasound and gravimetric monitoring networks.

Nowadays, the number of satellite images available at no charge for scientific purpose is still increasing. New low-cost approaches, such as micro-satellite constellations and Unmanned Aerial Systems (UAS), are in constant development. The spectral, spatial and temporal resolutions of sensors are continuously improved. All these types of evolution make volcano remote sensing more accurate and comprehensive than before, allowing the scientists to better decipher the volcanic activity and the associated underlying magmatic processes.

In the present session, we invite all contributions that deal with the study and monitoring of active volcanoes using recent imaging sensors on-board space-, air- or ground-based platforms. Targeted remote sensing techniques are essentially –but not restricted to– ground surface deformation, topographic changes, ash and gas emissions, thermal detection, measurements and mapping, and geological mapping. Research based on time-series datasets processing and modelling, complementary remote sensing approaches and/or the combination of remote sensing with ground-based monitoring techniques are encouraged.