USGS M 5+ Earthquakes

+ M 5.0, north of Svalbard
May 26, 2012 03:27:04 GMT
+ M 5.1, Loyalty Islands, New Caledonia
May 26, 2012 00:51:25 GMT
+ M 5.0, Norwegian Sea
May 25, 2012 04:01:36 GMT
+ M 5.0, Norwegian Sea
May 25, 2012 00:25:56 GMT
+ M 6.2, Norwegian Sea
May 24, 2012 22:47:46 GMT
+ M 5.1, Neuquen, Argentina
May 24, 2012 19:18:55 GMT
+ M 5.6, western Indian-Antarctic Ridge
May 23, 2012 23:19:18 GMT

Earthquake Recording Center

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 seismomter 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. Both the digital and analog data are on display in the Greene Gallery.

Digital Seismometer Specifications

Sensor: Guralp Broadband CMG-3ESP

Latitiude: 43.07611 North

Longitude: 87.88455 West

Elevation: 205 meters


Digital Data is collected at 1 sample/second for teleseimic earthqauakes and 40 samples per second for regional earthquakes

Picture of Guralp CMG-3ESP and Poles and Zeros


Earthquake Links

Topographic Data

Earthquake Utilities

 
Retargeting Pixel