Скачать или смотреть Back to Back M6+ Earthquakes - 11/30/20 - RaspberryShake 4D Seismograph (RD29A) - Chino Hills, CA

Recording of the live stream from a RaspberryShake 4D seismograph in Chino Hills, Ca
Two M6.0+ earthquakes arrive less than 2 minutes apart:
M 6.4 - 88 km SSE of Sovetskaya Gavan’, Russia 4,996 mi / 8,080 km from Chino Hills
1:36 - M 6.3 - 76 km WSW of San Antonio de los Cobres, Argentina 5,212mi / 8,388km from Chino Hills

** Overview of this live stream (What is this?):    • RasberryShake 4D (RD29A) Chino Hills, Ca L...   **

Live Stream permanent link:    / @mighty3503  

Log of quakes that have been detected: https://bit.ly/2DWS5Ba
Logged quakes displayed on a map: https://bit.ly/3laZNJh
View the daily Southern California earthquake totals: http://bit.ly/2MdNfRQ
Map of the locations of the Spectrograms used on the lower left: https://bit.ly/3mec5kp

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: http://bit.ly/2n8vk4I

Article on how my RaspberyShake data is used: http://bit.ly/2OeSK2w

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==Display Info==
The lower graph 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 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. https://raspberryshake.net/stationview/

The upper right graph displays data for the last 8 hours.

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 have motion felt here.

RaspberryShake data is displayed using WinSDR (http://psn.quake.net/shake/winsdrshak...) Data is filtered at .1 - 7.0 Hz to reduce local cultural noise.
The spectrogram is displayed using the USGS's Swarm application: https://volcanoes.usgs.gov/software/s...

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.

==Contact Info==
Twitter:   / stevebcaron   @SteveBCaron
Email: [email protected] for questions or feedback.

==Info Links==
RaspberryShake: https://raspberryshake.org/
How to read a seismogram: https://www.iris.edu/hq/inclass/uploa...
What is a spectrogram: https://pnsn.org/spectrograms/what-is...
Pacific Northwest Seismic network. (Earthquake and volcanic activity in the Pacific Northwest): http://pnsn.org

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