Due to its physical properties, the forearc mantle wedge in subduction zones has commonly been regarded as too cold and too hydrated to allow earthquake nucleation. However, in recent years, precise observations enabled the detection of clusters of mantle wedge seismicity in numerous regions, such as New Zealand, Japan, the Alps, Chile or the Lesser Antilles. Yet, many questions remain unanswered, for example, about the environment hosting these events, the processes triggering mantle wedge seismicity and its implications for seismic hazard. In this session, we aim to bring together contributions on detection, modeling, physical processes understanding, implications in terms of seismic hazard, mantle dynamics, and mineralogy to understand this seismic activity.

In particular, we invite contributions from:
- Seismological observations (detection, location, analysis)
- Geodynamic or thermomechanical modeling
- Fluids in mantle wedge seismicity
- Mineralogy and rheology understanding
- Implications for seismic hazards
- Regional case studies