M 5.1 - 7 km SE of Ojai, CA 8/20/23 RaspberryShake 4D Seismograph (RD29A) Live - Chino Hills, CA
Recording of the live earthquake stream from a RaspberryShake 4D seismograph in Chino Hills, Ca
0:00 - Ojai 5.1
4:57 - Ojai 3.5
7:07 - Ojai 3.3
9:32 - Close-up of the vault
Plot of the earthquake:
M 5.1 - 7 km SE of Ojai, CA 8/20/23 - 91mi / 146km from Chino Hills
Guide to this stream (Last update 4/7/23):
Overview of this live earthquake stream (What is this?):
Live Stream permanent link:
Log of earthquakes that have been detected:
Guide to the Geophone Counts gauge:
Logged earthquakes displayed on a map:
View the daily Southern California earthquake totals:
Graph of Quakes detected - Magnitude vs Distance:
Quake Log Summary (5 Largest, Smallest, Farthest, and Closest):
Map of the locations of the SoCal Spectrograms used on the lower left:
The current count of magnitude 5 quakes:
The RaspberryShake is located in a homemade seismic vault in a backyard approx 2 ft below ground. Here is an article on the latest version of the vault:
Article on how my RaspberyShake data is used:
Use the code SCARON20 to receive a discount when ordering RaspberryShake products.
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=Tip Jar=:
Venmo: @Steve-Caron-5
==Display Info==
An alert tone will sound if a possible earthquake has been detected. The tone will change pitch and sound longer the stronger the motion that is detected.
The lower graph (black line) will show smaller motion. Either smaller local quakes or larger more distant earthquakes. The graph is set to a fixed scale. The larger the motion detected, the more the graph will be filled.
The graph above the lower graph (blue line) is a variable scale graph. The graph’s scale will shrink and grow as the signal level changes.
The color graph is a Spectrogram. This is a different way to view the same seismic data. See the info links for information on how to interpret this graph.
All three of these graphs show the last 2 minutes of data
The upper left displays the RaspberryShake station network in Southern California.
The upper right graph displays seismic activity for the last 8 hours.
The Ring of Fire spectrograms display various seismic stations around the Ring of Fire.
The SoCal spectrograms display USGS seismic stations around Southern California.
The gauge shows the current ’count’ value of the 4d’s geophone. Count definition: “Counts” is the raw number read off the physical instrument, ie. the voltage read from a sensor.
Below the gauge are three lights that will show red if any of the 4D’s accelerometer sensors detect feelable ground motion here. One for Vertical motion, one for North/South motion, and one for East/West motion. I estimate it will take about 80,000 to 100,000 counts to begin to motion felt here.
==Contact Info==
Twitter: @SteveBCaron
Email: stevecaron1@ for questions or feedback.
==Software Used=
The black link is produced by custom a Python program using Raspberry Shakes rsudp utilities. Data is filtered at .1 - 8.0 Hz to reduce local cultural noise.
All spectrograms and blue line are displayed using the USGS’s Swarm application:
==Info Links==
RaspberryShake:
How to read a seismogram:
What is a spectrogram:
Pacific Northwest Seismic network. (Earthquake and volcanic activity in the Pacific Northwest):
#earthquake #seismograph
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