QM-4.5LV Seismometer - Realtime Seismic Images

QM-4.5LV Seismometer for schools, offices and homes. This realtime display updates every 5 minutes. Click here to return to the Infiltec QM-4.5LV product page.

LONG PERIOD Real-Time Display of QM-4.5LV Data emphasizes distant quakes. It is generated by setting AmaSeis software bandpass filtering to a long period (0.04Hz/25sec to 0.10Hz/10sec) band:

SHORT PERIOD Real-Time Display of QM-4.5LV Data emphasizes nearby quakes and local noise. It is generated by AmaSeis software bandpass filtering to a short period (0.5Hz/2sec to 1.0Hz/1sec) band:

Note that both SHORT AND LONG PERIOD displays above come from one QM-4.5LV seismometer by splitting the QM-4.5LV serial output with a DB9 cable Y splitter.

24 Hour Helicorder Plot: Each horizontal line is an hour in UT (Universal Time), with new data on the bottom line, and quake intensity plotted on the vertical axis.
Time Accuracy: UT is sychronized to web time servers within milliseconds by the free About Time PC software.
Technical Specifications: 16 bit ADC, vertical geophone sensor, 8 pole Bessel LP filter, low-noise amplifier, 0.01 to 1.0 Hz analog frequency bandpass.
Sensitivity: The QM-4.5LV generally detects magnitude 7 quakes or greater worldwide, and magnitude 6 quakes or greater across the USA.
Location: This QM-4.5LV is on a noisy slab-on-grade in the Infiltec factory in Waynesboro, VA about 100 meters from a busy train track. A vault on bedrock would be less noisy.
Software: Data logging, display, and web images are provided by the free AmaSeis and Fling PC software.
Data Output: ASCII serial records @ 9600 8N1, output serial cable with DB9 connector for COM port, works with most USB to serial adapters for PC without COM port.
Power: No external power supply is required because the QM-4.5LV connects to PC serial or USB port and derives its power from the db9 port pins 4(DTR) and 7(RTS). Note that not all USB-serial adapters can supply the ~5ma@7v power that the QM-4.5LV needs to operate. The QM-4.5LV comes with a tested USB adapter.
Computer Requirements: Works best with a PC running 24/7 and a broadband internet connection. The hardware and software has been tested on Windows 98/XP/Vista/7/8/8.1/10. Approximately 1MB of data is logged to the hard drive every 24 hours.
Today's Quakes: USGS earthquake list, Columbia University seismograph near NYC, and IRIS Seismographs in Schools.

SOME OF THE EARTHQUAKES DETECTED BY THIS QM-4.5LV SEISMOMETER:

July 10, 2011 (00:57:12 UTC)
Magnitude 7.0 Off the East Coast of Honshu, Japan
Detection Distance: 6,500 miles/10,500 km (94.94 degrees) from a QM-4.5LV located at Bailey's Crossroads, VA (near Washington, DC)
24 hour display containing quake data. from AmaSeis software Helicorder/24 hour display
Time segment containing quake data. from AmaSeis software Extract Earthquake display
Frequency Spectrum of quake data. from AmaSeis software Log-Log Spectrum display
University of Portland/IRIS Earthquake Notice (pdf) from IRIS Recent Earthquake Teachable Moments
July 6, 2011 (19:03:16 UTC)
Magnitude 7.6 Tonga-Kermadec Islands
Detection Distance: 7,900 miles/12,700 km (114.42 degrees) from a QM-4.5LV located at Bailey's Crossroads, VA (near Washington, DC)
24 hour display containing quake data. from AmaSeis software Helicorder/24 hour display
Time segment containing quake data. from AmaSeis software Extract Earthquake display
Frequency Spectrum of quake data. from AmaSeis software Log-Log Spectrum display
University of Portland/IRIS Earthquake Notice (pdf) from IRIS Recent Earthquake Teachable Moments
June 24, 2011 (03:09:40 UTC)
Magnitude 7.2 Fox Islands, Aleutian Islands, Alaska
Detection Distance: 4.500 miles/7,010 km (63.17 degrees) from a QM-4.5LV located at Bailey's Crossroads, VA (near Washington, DC)
24 hour display containing quake data. from AmaSeis software Helicorder/24 hour display
Time segment containing quake data. from AmaSeis software Extract Earthquake display
Frequency Spectrum of quake data. from AmaSeis software Log-Log Spectrum display
Travel time estimate from quake data. in degrees (1 degree = 69.10 miles/111.2 km) from AmaSeis software Time-Travel Curve display
University of Portland/IRIS Earthquake Notice (pdf) from IRIS Recent Earthquake Teachable Moments
March 11, 2011 (05:46:23 UTC)
Magnitude 9.0 Near the East Coast of Honshu, Japan
Detection Distance: 6,600 miles/10,600 km (95.09 degrees) from a QM-4.5LV located at Bailey's Crossroads, VA (near Washington, DC)
24 hour display containing quake data. from AmaSeis software Helicorder/24 hour display
Time segment containing quake data. from AmaSeis software Extract Earthquake display
Frequency Spectrum of quake data. from AmaSeis software Log-Log Spectrum display
Travel time estimate from quake data. in degrees (1 degree = 69.10 miles/111.2 km) from AmaSeis software Time-Travel Curve display
University of Portland/IRIS Earthquake Notice (pdf) from IRIS Recent Earthquake Teachable Moments

PICTURES OF THE QM-4.5LV SEISMOMETER:

Complete QM-4.5LV Seismometer hardware ready to run (click on image to enlarge).

QM-4.5LV Seismometer system label with Quick Start Instructions (click on image to enlarge).

FOR MORE INFORMATION ON THE QM-4.5LV SEISMOMETER:
Click here for ordering information.
Click here for more description.