Franklin & Marshall College Franklin & Marshall College

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Geophysics Laboratory

Physics applied to understanding the Earth

Paleomagnetism Equipment (with links to vendors)
- Molspin Minispin fluxgate rock magnetometer
- Molspin alternating field demagnetizer with partial ARM attachment
- Magnetic Measurements MMTD1 thermal demagnetizer
- ASC Scientific Model IM-10 Impulse Magnetizer
- Bartington Magnetic Susceptibility Meter Model MS2 with MS2B and MS2C probes
- Bartington Mag-01 Single Axis Fluxgate Magnetometer
- Pomeroy portable rock drill and orienter


Field Geophysics Equipment (with links to vendors)
- Sensors and Software Noggin 250 ground penetrating radar
- EG & G Geometrics G-858 cesium vapor gradiometer, and field cart
- EG & G Geometrics G-856 proton precession magnetometer and gradiometer attachment
- Geonics EM31-D Terrain Conductivity Meter with Omnidata Polycoder data logger
- L and R Instruments MiniRes Earth Resistivity and IP Instrument
- Bison Earth Resistivity Meter Model 2350
- La Coste & Romberg Model G Land Gravity Meter
- EG & G Geometrics ES-1225 Exploration Seismograph, with filter option (12 channels)
- Bison 1570C Signal Enhancement Seismograph (1 channel)
- Bartington Magnetic Susceptibility Meter Model MS2, with MS2D, MS2F, and MS2H probes
- Fisher FX-3 ferrous metal detector
- Trimble GPS Pathfinder Pro XR/Pro XRS Mapping Systems



Franklin & Marshall Earthquake Seismic Station
Our seismic station is capable of detecting seismic waves generated by large earthquakes anywhere in the world. Small, local earthquakes, non-seismic events, like quarry blasts in the Lancaster area, and microseisms from the impact of high-energy waves on the continental shelf, can also be detected.

Seismic signals from our state-of-the-art Guralp CMG-40T broadband digital seismometer are available on the web through the Lamont-Doherty Cooperative Seismograph Network. For archived data, re-select F&M station "FMPA" beneath the seismogram for the date chosen, and hit the Submit button.

The current day seismogram is updated every two minutes. Select archived seismograms using the calendar to the left of the page. The chart scale on the left is local time; the scale on the right is Greenwich mean time. One horizontal line represents 30 minutes, and a full screen represents one day.  Alternating colors help to distinguish the lines. The vertical deflection represents the amplitude of ground motion. Separate seismograms can be seleected for either the vertical (BHZ), north-south (BHN), or east-west (BZE) components of ground motion.

Earthquake epicenters can be located using data from three or more seismographs. Our seismograph is not calibrated for determining earthquake magnitudes.
F&M is a member of the Lamont-Doherty Cooperative Seismographic Network: http://www.ldeo.columbia.edu/res/pi/LCSN/

Learn more about earthquakes and seismology at: http://earthquake.usgs.gov

Seismic Record of Lancaster County Earthquake

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for more information please contact Rob Sternberg