The images on this page are snapshots of the last 24 hours of data the ANF is currently receiving from USArray stations. The page is auto-refreshed every 300 seconds to reflect the latest data recorded. When the page auto-refreshes the browser preserves the users tab selection.
Waveform data is yellow with a dark blue background. A light blue background represents zero data return. The most recent data is on the right-hand side, with the edge of the right-hand side of the image being the current time. Time is shown after every lines in the format YYYYJJJ:hh:mm:ss, where YYYY is the year, JJJ is the Julian Date, hh is the hour (24 hour), mm is the minute, and ss is the second.
The identifying code (on the left-hand side) is in the format NN_STA_CHA where NN is the operating network (i.e. the Transportable Array (TA), a regional network like CalTech (CI) or the USNSN(US)), STA is the station code, and CHA is the channel code used to identify a particular data stream from the station (e.g. HHZ is a broadband, High sample rate, High gain, Vertical component data stream).
For a complete guide to station codes and their meanings visit the IRIS website.
Last updated: 2009-11-09 (313) 23:27:05 UTC
EarthScope is funded by the National Science Foundation.
The EarthScope Array Network Facility supports USArray
with the Incorporated Research Institutions for Seismology.
© 2009
Scripps Institution of Oceanography,
University of California San Diego
