Dr. Mikhail Kogan
Earth Institute Contact: Dr. Mikhail Kogan
The RUSEG/NEDA GPS Network is a segment of the global network of International GPS Service, or IGS [Steblov et al., 2003]. The network is collocated with the GSN seismic network in Russia; such network design can significantly increase the observable frequency band and timely assessment of magnitudes of large (Mw 8) earthquakes [Nikolaidis et al., 2001]. The RUSEG/NEDA Network is operated in the framework of Collaboration Agreement between RDAAC / Geophysical Service of the Russian Academy of Sciences and Lamont-Doherty Earth Observatory of Columbia University. The project is jointly supported by IRIS and JPL/NASA. In addition to GPS systems at the RUSEG/NEDA stations, we also installed the Paroscientific MET3 meteorological measurement systems, capturing atmospheric pressure, temperature, and humidity. A primary goal of the MET3 observations at GPS stations is to estimate the precipitable water vapor [Kogan et al., 2001]. In this amendment, we propose to enhance the operation of MET3 systems at the RUSEG/NEDA GPS Network (Figure 1) such that they also function as microbarographs for infrasound measurements (http://www.isla.hawaii.edu/NSF03/downloads/butler.pdf) [Evers and Haak, 2001]. By November 2004, IRIS installed microbarographs Paroscientific 6000-16B at five GSN stations in Russia: KIV (Kislovodsk, north Caucasus, scheduled RUSEG/NEDA GPS station KIVK), OBN (Obninsk, Moscow Region, RUSEG/NEDA GPS station MOBN), ARU (Arti, the Urals, RUSEG/NEDA GPS station ARTU), LVZ (Lovozero, scheduled RUSEG/NEDA GPS station LOVO), and TLY (Talaya, Irkutsk Region, RUSEG/NEDA GPS station IRKM). Systems MET3 at RUSEG/NEDA stations and barometers 6000-16B at GSN stations are quite compatible in all critical parameters (Table 1) which is the main argument in favor of our proposal.