This page uses the 3D JavaView viewer to show the real-time double-difference (DD-RT) location solution for event 72503156:

Date: 2015/08/09 | Time: 00:25:10.360 | Lat: 40.45818 | Long: -121.54871 | Depth: 3.920 | Mag: -0.20

Shift from initial location: 1.102 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 860 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 72503156 (M=-0.20)
  • 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 10 16:02:43 UTC 2015