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 73374220, which has the following hypoDD-RT solution:
Date: 2020/04/21 | Time: 03:31:3.980 | Latitude: 38.78708 | Longitude: -122.76681 | Depth: 1.933 | Magnitude: 0.60
Quality: 1 | Shift: 0.723 | 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 11023 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: Tue Apr 21 03:55:23 UTC 2020