ISTerre GNSS Stations Map

DEEPtrigger investigates how slow deformation, deep seismicity and large megathrust earthquakes interact across subduction systems.

Scientific challenge

Subduction zones generate the largest earthquakes and tsunamis, yet the preparation phase of these ruptures remains poorly constrained.

Geodetic signal

The portal helps inspect permanent GNSS stations used to monitor slow deformation around active subduction margins.

Seismic signal

Earthquake layers support joint exploration of seismicity, including deep events that may relate to slab-scale triggering processes.

Key questions

How do aseismic slow slip and seismic rupture interact from short to long timescales?
What is the role of deep processes and deep earthquakes in megathrust initiation?
How can distant deformation changes transfer through a large subduction system?

Use the “Study Areas” overlay to locate the DEEPtrigger focus regions, then combine it with GNSS stations, earthquakes, active faults and tectonic plates.

DEEPtrigger GNSS Monitoring Portal

Geoprocessing

Spatial Analysis

Scientific Analysis

Data Quality

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