This page uses the Three.js 3D JavaScript library to show real-time double-difference hypocenter locations of earthquakes in Northern California. The box below is centered on event 73506935, which has the following hypoDD-RT solution:
Date: 2021/01/04 | Time: 15:46:38.280 | Latitude: 38.77886 | Longitude: -122.72196 | Depth: 2.294 | Magnitude: 0.60
Quality: 2 | Shift: 0.547 | Version: 0.1The high-resolution background seismicity included in the box comes from two double-difference catalogs. Hypocenters for the years 1984-2011 are taken from the DD catalog for Northern California (NCAeqDD.v201112.1). 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 dots, those from the DD-RT catalog by colored dots.
There are 8073 earthquakes in the box. Magnitude cutoff is 2 (except for events within the last week).
Legend:
Viewer instructions:
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3D applet written by Robert Simpson (USGS) and Eric Malikowski (LDEO).
Time created: Mon Jan 4 22:14:17 UTC 2021