This page uses the 3D JavaView viewer to show the real-time double-difference (DD-RT) location solution for event 72509856:

Date: 2015/08/21 | Time: 08:18:27.880 | Lat: 40.29515 | Long: -121.54502 | Depth: 3.661 | Mag: 0.90

Shift from initial location: 2.094 km | Version: 2.1

The box below is centered on the event's hypocenter (red), and includes high-resolution background seismicity for Northern California
from both the DD base catalog (1984-2011, NCAeqDD) and the DD-RT real-time catalog (2012-present; NCAeqDD-RT).
Earthquakes from the DD catalog are shown in gray, those from the DD-RT catalog in yellow.

There are 161 earthquakes in the box. Magnitude cutoff is 1 (except for events within the last week).

Loading earthquakes.

Legend:

  • Red circle is hypoDD-RT solution for event 72509856 (M=0.90)
  • Events in previous HOUR | DAY | WEEK
  • DD-RT catalog (2012-present) (M>1)
  • DD catalog (1984-2011) (M>1)
  • Larger circles: M>4
  • Green circle is original (NCSN) location
  • Red lines: faults from USGS
  • Top square of the bounding box has green/blue sides, blue on the North.
  • XYZ box dimensions (km) = 15.0 x 15.0 x 15.0.


    • Viewer instructions:

    Left-Mouse Drag to rotate
    s Drag to scale
    t Drag to translate
    p Show magnitude
    r Reset view
    w / q Start / Stop auto-rotation
    More ... JavaView Help

    The 3D applet originally written by Robert Simpson (USGS) and adapted to show DD-RT results. Contact: felixw@ldeo.columbia.edu.

    Time created: Mon Aug 24 07:50:19 UTC 2015