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 73515940, which has the following hypoDD-RT solution:
Date: 2021/01/24 | Time: 22:16:7.990 | Latitude: 37.50142 | Longitude: -118.86545 | Depth: 7.763 | Magnitude: 2.50
Quality: 1 | Shift: 2.369 | Version: 2.1The 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 9647 earthquakes in the box. Magnitude cutoff is 1.5 (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: Wed Jan 27 21:00:13 UTC 2021