What is DISS?
DISS is a georeferenced repository of tectonic, fault, and paleoseismological information expressly devoted, but not limited, to potential applications in the assessment of seismic hazard at the regional and national scales.
- it represents faults in 3D;
- all its records are fully parameterized;
- it tends to completeness.
The core objects of DISS are:
- The individual seismogenic source, a simplified and three-dimensional representation of a rectangular fault plane. Individual seismogenic sources are assumed to exhibit "characteristic" behavior with respect to rupture length/width and expected magnitude.
- The composite seismogenic source, a simplified and three-dimensional representation of a crustal fault containing an unspecified number of seismogenic sources that cannot be singled out. Composite seismogenic sources are not associated with a specific set of earthquakes or earthquake distribution.
- The debated seismogenic source is an active fault that has been proposed in the literature as a potential seismogenic source but was not considered reliable enough or its parameters could not be constrained in order for it to be included in any of the other categories.
- The subduction zone, a simplified and three-dimensional reconstruction of the complex subduction system. It is mainly represented by the depth contours of the subducted slab. Like composite seismogenic sources, subduction zones are not associated with a specific set of earthquakes or earthquake distribution.