Technical Information

REV gets all of its station and waveform data from the IRIS DMC through the FDSN Web Services. Earthquake location information comes from their FDSN Event Web Service. It uses SOD to gather and choose the data for viewing. REV only allows earthquakes greater than 5.5 magnitude for worldwide earthquakes and greater than 3 magnitude in the United States. Its stations are any in the IRIS DMC with data in the last week. Seismograms are only presented if they pass a signal to noise calculation and various filtering is done before presenting them in REV. If you have any questions about this process, feel free to email us at