High-precision Aftershock Locations and Fault Planes of the 2016-2017 Central Italy Sequen

390,334 high-precision hypocenter relocations document the 2016-2017 Amatrice earthquake sequence in Central Italy. The catalog was created by researchers from Columbia University using double-difference inversion of INGV phase picks and cross-correlation differential times. Fault planes and surfaces were derived from PCA analysis and mapping of correlated earthquake locations.

Use Cases

• Model fault zone geometry and structure based on derived fault planes and detachment surfaces.
• Analyze spatio-temporal patterns of aftershock sequences based on high-precision hypocenter relocations.
• Validate seismic event detection and relocation algorithms based on a large catalog of correlated events.
• Study earthquake triggering and stress transfer mechanisms based on the sequence of 390,334 events.

Strengths

• Contains 390,334 high-precision earthquake relocations, providing a substantial event catalog.
• Fault structures are derived from two months of aftershock data following large events, offering detailed fault plane analysis.
• Locations were computed using a combination of INGV phase picks and cross-correlation differential times (coefficient > 0.7), suggesting high internal consistency.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count for derived fault plane data is unknown, which may limit suitability assessment.
• Last update date is unknown; freshness unverified.

Provenance

Source

Waldhauser et al., Columbia University, via paperswithcode.

Collection Method

Double-difference inversion of INGV phase picks and cross-correlation differential times from correlated seismograms.

Time Range

2016-2017

Geography

Central Italy (Amatrice region)