Knowledge
Understanding ground motion requires connecting geology, hydrology, climate, temporality and Earth observation.
This section gathers educational content about clay soils, clay shrink–swell processes, InSAR, hydrological dynamics, RGA exposure maps and the interpretation limits of spatial data.
Published 3 June 2026
2026 update
2026 clay shrink–swell map: geology has not changed, risk has
Why updating a clay shrink–swell exposure map does not mean geology has changed: climate, buildings, claims history and zoning methodology.
Published 29 May 2026
Hydrology × insurance
When physical drought and insurance signals tell different stories
A bivariate map crossing Soil Water Index evolution and CatNat drought recognition request growth.
Published 28 May 2026
Earth observation
Understanding InSAR and ground motion
What satellite radar interferometry actually measures: phase, line of sight, time series, noise and interpretation limits.
Published 28 May 2026
Geology
Understanding clay soils and shrink–swell
Geology, mineralogy, water, drought and seasonal dynamics.