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 75003798, which has the following hypoDD-RT solution:
Date: 2025/07/02 | Time: 16:05:30.720 | Latitude: 37.47998 | Longitude: -118.78759 | Depth: 6.899 | Magnitude: 0.90
Quality: 1 | Shift: 2.330 | 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 base catalog for Northern California (NCAeqDD.v201112.1). Hypocenters from 2012 up to present are taken from the real-time double-difference catalog DD-RT (NCAeqDDRT.v201201). Earthquakes from the DD catalog are represented by gray dots, those from the DD-RT catalog by colored dots.
There are 8001 earthquakes in the box. Magnitude cutoff is 1.5 (except for events within the last week).
|
Legend:
Viewer instructions:
|
||||||||||||||||||||||||||||
3D applet written by Robert Simpson (USGS), Felix Waldhauser and Eric Malikowski (LDEO).
Time created: Thu Jul 3 05:51:27 UTC 2025