Global seismological network event bulletins and hypocentral origin time benchmarks: USGS ComCat and GFZ GEOFON
- Outcome
- Completed
- Search date
- Source
- United States Geological Survey (USGS NEIC) and GFZ German Research Centre for Geosciences
- Reference
- RUN-20260923-064
- Aim
- Query global seismological event registries to establish millisecond precision origin time benchmarks, focal depth, surface wave proxy magnitudes, and regional tectonic co seismic screening for the 26 August 2026 Langtang Lirung collapse.
- Source and interface
- United States Geological Survey (USGS NEIC) and GFZ German Research Centre for Geosciences — USGS Earthquake API (ComCat) and GEOFON Global Network Web Service
- Search method
- Query USGS ComCat API with spatial filter (28.27° N, 85.51° E, radius 50 km) and temporal window (2026-08-25 to 2026-08-27); query GFZ GEOFON global event register for event gfz2026qrfy.
- Criteria
Criterion Spatial bbox 27.5 to 29.0° N, 84.5 to 86.5° E 00 00 to 04:00:00 UTC. Non tectonic single force landslide seismic signal classification. - Coverage
- Definitive origin time (02:52:10 UTC), hypocenter (28.271° N, 85.515° E), surface wave magnitude 5.2 ms_vx, and GEOFON Mw 5.7 proxy.
- Stopping rule
- Identify all official global seismic event solutions for the Langtang detachment.
- Result
2 authoritative global seismic network bulletins catalogued across 3 assets: USGS ComCat event GeoJSON and QuakeML XML descriptors alongside the GFZ GEOFON event bulletin.
Resource links below show the completed assessment outcomes. The search result above records discovery at the search date.