TerraOverview
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Interpretation rule

shoreline-ispra-avanzamento

When it applies

Source class

AVANZAMENTO

The rule fires when the named source publishes this class for the point being asked about. Until the source does, TerraOverview adds nothing.

TerraOverview interpretation: shoreline moved more than 5 m seaward between 2006 and 2020, within 250 m of the point

ISPRA drew the Italian shoreline on the 2006 orthophotos and on imagery of 2017–2020 and compared the two lines, stretch by stretch, after aligning them: more than 5 metres landward is erosion, more than 5 metres seaward is advance, within 5 metres is stable. It is a displacement observed between two dates, not a yearly rate, not a forecast and not its cause. TerraOverview reports the stretches within 250 metres of the point; that distance is its own choice.