P-wave arrival times for the 1991 racha, Georgia earthquake sequence at stations of a test, sparse network

Myers, S C ; Schultz, C A ; Ryall, F

Lawrence Livermore National Laboratory

关键词: Caucasus;    Lawrence Livermore National Laboratory;    Monitoring;    Hypocenters;    Aftershocks;   

DOI  :  10.2172/15005702
RP-ID  :  UCRL-ID-137708
RP-ID  :  W-7405-ENG-48
RP-ID  :  15005702

美国|英语

来源: UNT Digital Library

【 摘 要 】

The following arrival information is a supplement to Myers and Schultz (2000). Myers and Schultz (2000) demonstrate the improvement in sparse-network location that can be achieved by using travel-time corrections determined with a Bayesian Kriging algorithm (Schultz et al., 1998). Precise, benchmark locations are provided by a local aftershock study of the 1991 Racha, Georgia earthquake sequence in the Caucasus Mountains (Fuenzalida et al., 1997). A test network is used to relocate the aftershocks with and without travel-time corrections. The test network is meant to represent a typical International Monitoring System configuration, with 6 stations at regional to near teleseismic distances (less then 30{sup o} from the epicenter). The following arrival-time data help to facilitate the reproduction of Myers and Schultz (2000). The arrival picks were obtained from the International Seismic Center (ISC) (openly available) and a Lawrence Livermore National Laboratory (LLNL) analyst (Flori Ryan). Table 1 lists the arrivals in epic time (time since January 1, 1970). The author of the arrival pick is listed as either ''flori'' or ''-'', where ''-'' indicates ISC. Table 2 lists the hypocenter information determined in the local aftershock study of Fuenzalida et al. (1997), and Table 3 lists the station information for the Racha test network. Fields in all tables are described in the CSS3.O database schema.