Amateur Radio Public Seismic Network (ARPSN)
Seismic Sources

Redwood City Public Seismic Network

PSN Station Map

Downloads: WinQuake, WinSDR 4.1.2, WinPlotGPS 1.5, and Earthworm Modules

New: Linux Driver Library for the 16-Bit PSN-ADC-SERIAL A/D Board

New: Linux/Unix PsnAdSend Earthworm Module

Equipment for Sale

* New Earthquake Data Files. This list is updated ~5 minutes after an event and is purged after 7 days.
* Earthquake Data Files by year and month. You can also search the event archives by day and PSN station ID.
* Station Information on the event data files recorded by my system. PSN Station List by file extension.
* Teleseismic and Other Interesting Events recorded on my system.
* Download Software (WinQuake and Quakevu) to view PSN and SAC binary event data files.
* Utility Software. This page currently has a basic program to calculate bearing and distance.
* Homebuilt Seismograph FAQ has information on how to build your own seismograph station.
* Information, Equipment and Software (EMON and SDR) to help you build your own seismograph station.
* Public Seismic Network Mailing Lists. Subscribe or unsubscribe to the PSN-L, NewEvent, and NewFile mailing lists.
* Archives of past PSN-L messages.
* Block Diagram of the Redwood City PSN system.
* Request Data from any USGS or local sensor monitored by my data logging systems.
* Dec. 8th, 1998 Northern California PSN meeting summary and photos.
* Dec. 20th, 1997 Northern California PSN meeting summary.
* Please Read if your are planning to build the ADXL05 sensor based on the April 1996 Scientific American article.
* Strong Motion data comparing an ADXL05 based sensor and a Kinemetrics FBA-23A commercial sensor. Other strong motion data.
* PSN Type 4 event file format. The new releases of WinQuake, WinSDR and SDR now support this format.
* e-Quake's Seismic Explorer software to link PSN stations in real-time with regional networks.
* New! Nevada Seismological Laboratory's "Real-Time" K-12 Educational Seismic Network

Other PSN Web Sites

* Chirinet, Panama's Public Seismic Network
* Dominica Public Seismic Network
* Dunedin, New Zealand Public Seismic Network
* Fairbanks, Alaska Public Seismic Network
* F.E.S.N. - Italy Friuli Experimental Seismic Network
* Golden, Colorado Public Seismic Network
* Kailua-Kona, Hawaii Public Seismic Network
* Italian Experimental Seismic Network (English version)
* San Jose, California Public Seismic Network
* The Amateur Teleseismic Network (ATN)

Additional Earthquake Information

* Information on Seismic Waves, Magnitude and Plate Tectonics from the University of Nevada, Reno.
* Locating Earthquakes (A tutorial on how earthquake locations are determined) from the USGS Home Page in Menlo Park, California
* Seismo-surfing the Internet and LW's Geo Site home pages have links to more information related to Seismology and Geology.
* Princeton Earth Physics Project home page. WinQuake Ver. 2.2 can now read PEPP data files.
* Dave Nelson's home page has information on New Zealand seismology and astronomy.
* New Zealand seismology Interactive Earthquakes and Quake Trackers.
* Quake Pro has earthquake hazard reduction equipment like automatic shutoff valves, water storage containers, and emergency kits.
* Virtual Earthquakes is an excellent site for learning about how earthquakes are located and how magnitudes are determined.
* Earthquake References maintain by the British Geological Survey.
* Recent Earthquakes in California and Nevada. This Web site is maintain by the USGS in Menlo Park, Ca.
* Manual of Seismological Observatory Practice Lots of useful information on earthquakes.
* OhioSeis Department of Geology at The College of Wooster.
* Information on Australian Seismicity
* Traveler's Tips for Visiting Earthquake Zones
* Seismogram Analysis Training Outline Manual (1.2MB pdf file)
* Mauro Mariotti's iNFO-EQ (Italiano) (English)
* Seismo-Watch is a leading source of earthquake news and information on the Internet.
* The Seismic Workgroup School Seismograph Station in Monschau Germany
* Investigating Earthquakes through Regional Seismicity
* Manuals for Seismograph Equipment

Equipment for Sale

* 8-Channel 16-Bit Serial Output Analog to Digital Converter Board
* Enclosures for the 16-Bit Serial A/D Board
* One to Four Channel Amplifier / Filter Board for the 16-Bit Serial Output A/D Board
* Garmin GPS 18-LVC OEM Timing Sensor for the 16-Bit Serial Output A/D Board
* Seismic Amplifier/Filter Board and Pickup Coil and Magnet Set for Lehman sensors
* Used Geophone Sensors for Sale
* Triaxial Accelerometer Sensor Board
* 12/16 Bit Analog to Digital Converter Board for SDR.
* Telemetry Demodulator Board
* Motorola ONCORE GPS Timing System
* Shackleford-Gundersen Seismometer Electronics Board
* How to Order

* VolksMeter Sensor sold by RLL Instruments - More Information: State-of-the-art Digital Seismometer

The VolksMeter Sensor is compatible with WinSDR and WinQuake

GeoTool Seismic Telemetry Monitor Computer Program - Temporarily Closed Due to Illness - Updated 201006.01

Click for Alternative Google Search = GSP-Seis (PC) Software

Monitor Analog Telemetry Stations with Scanner

'GSP-Seis' is a new Seismic Telemetry Aquisition System for monitoring USGS seismic telemetry stations using audio from almost any scanner radio and antenna system. The program uses your computer's Sound Card as a 16-bit Analog-to-Digital converter. State of the art Digital Signal Processing (DSP) programming uses the processing power of your computer to pull weak signals out of the noise and provide usable data. Separates single tones from multi-tone systems such as those being used by the University of Washington at Mt. St. Helens. (Note that you must have a telemetry station within range of your monitoring point for the system to work. See below for information on how to find the location of seismic telemetry transmitters.)

Telemetry Transmitter Frequencies -

Bryant Labs

You too can monitor seismic activity anywhere around the world with some relatively simple equipment which can be purchased for a few hundred dollars. The system I've built can detect earthquakes anywhere in the world over about magnitude 6.0. I happen to live less than 50 miles from a very active area at "The Geysers", a natural geo-thermal energy production area on the border of Lake and Sonoma Counties in northern California. It provides a constant source of low level earthquakes to keep me amused. I can see quakes down to magnitude 2.5 up there, and down below 2.0 if they are in Santa Rosa. [Continue Reading]

How to Build an Inexpensive Seismometer

Detailed information on how to build a seismometer that can detect earthquakes worldwide. This inexpensive design is based microprocessors and newer chips.

The Amateur Seismologist Home Page

Seismic Recording Systems - Seismo Hardware for the Amateur Seismologist - Seismograms of some of the quakes recorded with the AS1 seismic recording system.

IRIS Seismographs In Schools Program

The IRIS Seismographs In Schools program, funded by NSF, provides simple seismographs (the AS1) capable of recording earthquakes from around the world. Students can analyze data from their seismograph and from other schools to determine the magnitude and locations of earthquakes.

Near-real-time recordings of the school seismograph can be displayed on a Web site. IRIS distributes up to 30 AS1 seismographs per year, and over 100 AS1s have been given out to K-12 schools, science centers and organizations and universities.

The IRIS Seismographs is Schools program is part of the US Educational Seismology Network (USESN) initiative. The USESN is comprised of universities and other groups engaged in seismology education. The goals of the USESN include promoting the classroom use of educational seismographs and seismic data and disseminating hands-on curricular materials and educational services.

The U.S. Educational Seismology Network

Promoting the use of seismographs and seismic data for science education

Various Mac programs written by Jim Luetgert - Moved - Updated 201006.01
New Address -

[Note: The (above) new page link now contains both Windows and Macintosh Research Software]

These are various programs I have written over the last several years. Download them, try them out, use them, give some feedback.

MacRay is a general purpose two-dimensional seismic ray-tracer for Macintosh. Originally written to trace rays through 2-dimensional p-wave models, MacRay has grown to support 2-d models defined in Vp, Vs and density. In addition to being able to model the full range of simple to complex raypaths, the 2-d gravity response of the model may also be calculated. For surveys providing seismic P, S and converted wave arrivals in addition to gravity measurements, the full suite of physical properties may be modeled; Vp, Vs, density, Poisson's ratio, Vp/Vs, Shear modulus, Bulk modulus, Young's modulus, Lame's parameter, lithostatic pressure.

With the addition of an assumed or measured geothermal gradient, we can model the pressure and temperature conditions at any point in our earth model. A recent addition to MacRay allows you to define the features of a pressure-temperature diagram (e.g. metamorphic grade, solidus) and map those P-T regions back into the earth model.

AT LAST!!! Thanks to the porting efforts of Larry Baker, MacRay for OSX is ready. This version also runs on the Intel Macs.

If you cannot avoid using a PC, RAY84PC is a PC version of the old Ray84 I wrote for Vax many, many years ago. It was ported from Vax -> PC by Hans Thybo of Copenhagen University, Denmark.

MacR1D is a one-dimensional seismic travel-time calculator for Macintosh. Travel-times vs distance are calculated for P and S arrivals (sorry, no converted phases or multiples) for sources at any depth. These may be compared to observed travel-times. This is a very quick way to define 1-d velocity models from observed arrival pics.

Range is an interactive application for calculating the distance and azimuths between any two latitude/longitude positions. Range provides for a wide selection of spheroids. (Macintosh)

UTM is an interactive application for converting coordinates back and forth between Universal Transverse Mercator (UTM) and geographic (Latitude/Longitude). UTM provides for a wide selection of spheroids. (Macintosh)

Zoeppritz is an interactive application for calculating transmission and reflection coefficients. (Macintosh)

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