Seismic Station Information

UWM 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

guralp_edu_crop
  • 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

Topographic Data

Earthquake Utilities

UWM Land Acknowledgement: We acknowledge in Milwaukee that we are on traditional Potawatomi, Ho-Chunk and Menominee homeland along the southwest shores of Michigami, North America’s largest system of freshwater lakes, where the Milwaukee, Menominee and Kinnickinnic rivers meet and the people of Wisconsin’s sovereign Anishinaabe, Ho-Chunk, Menominee, Oneida and Mohican nations remain present.   |   To learn more, visit the Electa Quinney Institute website.