HR: 1330h
AN: S52C-0145    [PDF]
TI: The GSN Noise Model: Estimates of the Least Ambient Earth Noise From the IRIS Global Seismographic Network.
AU: * Berger, J
EM: jberger@ucsd.edu
AF: IGPP, UCSD, 9500 Gilman Drive, La Jolla, CA 92093-0225 United States
AU: Bolton, H
EM: bolton@asl.cr.usgs.gov
AF: USGS Albuquerque Seismological Laboratory, 801 University SE, Suite 300, Albuquerque, NM 87106 United States
AU: Davis, P
EM: pdavis@ucsd.edu
AF: IGPP, UCSD, 9500 Gilman Drive, La Jolla, CA 92093-0225 United States
AU: Ekstrom, G
EM: ekstrom@seismology.harvard.edu
AF: Harvard University, 20 Oxford St, Cambridge, MA 02138 United States
AU: Hutt, C
EM: Hutt@asl.cr.usgs.gov
AF: USGS Albuquerque Seismological Laboratory, 801 University SE, Suite 300, Albuquerque, NM 87106 United States
AB: It has been a decade since the last comprehensive model of ambient earth noise was published{\it (Peterson, USGS Open-File Report 93-322, 1993)}. Since then observations of ambient earth noise from the IRIS Global Seismographic Network of widely distributed, similarly equipped, and well-calibrated stations have been become available. The broad geographic sampling of this large data set and the ease of access to waveform data provided by the IRIS Data Management System facilitate analysis of global noise samples. We analyze data from the 118 GSN stations operating during the year July 2001 through June 2002. Based upon over 738,000 hourly spectral estimates computed from these stations' data, we have developed a robust noise model, which exhibits significant differences from the Peterson model both in the normal mode and body-wave bands.
DE: 7294 Instruments and techniques
DE: 7299 General or miscellaneous
SC: Seismology [S]
MN: 2003 Fall Meeting