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 73512780, which has the following hypoDD-RT solution:
Date: 2021/01/18 | Time: 02:43:57.860 | Latitude: 40.59014 | Longitude: -121.82449 | Depth: 5.827 | Magnitude: 1.80
Quality: 2 | Shift: 0.197 | Version: 5.1The 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 121 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: Fri Jan 29 07:21:40 UTC 2021