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 73365940, which has the following hypoDD-RT solution:
Date: 2020/04/08 | Time: 17:30:9.320 | Latitude: 39.23960 | Longitude: -123.25630 | Depth: 2.300 | Magnitude: 1.20
Quality: 1 | Shift: 1.116 | Version: 6.1The 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 646 earthquakes in the box. Magnitude cutoff is 1 (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: Thu Apr 9 21:30:49 UTC 2020