This page uses the 3D JavaView viewer to show real-time double-difference hypocenter locations of earthquakes in Northern California. The box below is centered on event 72172311, which has the following hypoDD-RT solution:
Date: 2014/02/21 | Time: 21:57:36.000 | Latitude: 37.66034 | Longitude: -118.85075 | Depth: 4.911 | Magnitude: 1.10
Quality: 1 | Shift: 0.478 | Version: 4.1The high-resolution background seismicity included in the box comes from two double-difference catalogs. Hypocenters for the years 1984-2009 are taken from the DD catalog for Northern California (NCAeqDD.v200912.1). Hypocenters from 2010 up to present are taken from the real-time double-difference catalog DD-RT (NCAeqDD-RT.v201001). Earthquakes from the DD catalog are represented by gray circles, those from the DD-RT catalog by colored circles.
There are 11316 earthquakes in the box. Magnitude cutoff is 1.5 (except for events within the last week).
Legend:
Viewer instructions:
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The 3D applet was written by Robert Simpson (USGS) and was adapted to run from within the real-time double-difference relocation system DDRT. Contact: felixw@ldeo.columbia.edu or simpson@usgs.gov.
Time created: Sat Feb 22 00:27:53 UTC 2014