51ÁÔÆæ operates both an analog and digital seismometer which are housed in a specially designed vault in the basement of Lapham Hall. The instruments rest on a pillar of concrete that extends down 30 feet to help isolate urban noise from transient signals. Unfortunately the bedrock in this area is too deep (~200ft) for the pillar to extend down to it so some urban noise is found in the signals. The digital seismometer is connected to a Dell PC that continuously records seismic data. The digitizer clock is is kept accurate with the help of a GPS sensor that is constantly feeding the current time. The analog instruments are long-period Geotech seismometers (only the E-W is currently running) and is connected to a Geotech Portacorder seismograph to produce a paper record.
Digital Seismometer Specifications
- Sensor: Guralp Broadband CMG-EDU-T
- Latitude: 43.07611 North
- Longitude: 87.88455 West
- Elevation: 205 meters
Digital Data is collected at 1 sample/second for teleseismic earthquakes and 40 samples per second for regional earthquakes.
Earthquake Links
- (NEIC)
- (Get EQ data from around the world)
- (Near real time updates)
- (European EQ data center and more)
- (Southern California EQ Data Center)
- (This site has all things seismology)
- (U.S. Geological Society)
Topographic Data
- (30-sec data; National Geophysical Data Center)
- (2-minute data; National Geophysical Data Center)
- (National Geophysical Data Center)
- (National Geophysical Data Center)
Earthquake Utilities
- (Mac Only; Chuck Ammon, Penn State)
- (Guralp Systems, program to plot digital data)
- (Generic Mapping Tools, U. of Hawaii)
- (FCC website)
- (Seismic Analysis Code, IRIS)
- (Guralp Systems, realtime acquisition and monitoring)
- (download it, Alan Jones, SUNY Binghampton)
- (download it, Alan Jones SUNY Binghampton)
- (Java Applet for Calculating Travel Times; University of South Carolina)
- (Web Based Event Request Method from IRIS)