• Antelope Release 5.5 Linux 2.6.32-220.el6.x86_64 2015-04-21

 

NAME

assoc_rayleigh - associates rayleigh wave picks to origins

SYNOPSIS

assoc_rayleigh [-v] db origin_db

SUPPORT


Contributed code: NO BRTT support.
THIS PIECE OF SOFTWARE WAS CONTRIBUTED BY THE ANTELOPE USER COMMUNITY. BRTT DISCLAIMS ALL OWNERSHIP, LIABILITY, AND SUPPORT FOR THIS PIECE OF SOFTWARE.

FOR HELP WITH THIS PIECE OF SOFTWARE, PLEASE CONTACT THE CONTRIBUTING AUTHOR.

DESCRIPTION

assoc_rayleigh associates rows in the arrival table in db with "iphase=='R'" with the origin table in origin_db. The condition for association is that an R arrival must occur with a velocity between 3.4 and 4.2 km/sec based on the origin_db origin.time, db arrival.time and the distance between the site and the origin. For each origin-arrival subset which satisfies these conditions, a check is made to see if the origin already exists in the db origin table by matching the lat, lon, depth, time, auth fields. If so, then the value of nass is updated and the rows are added to the assoc table. If the origin does not match, but is within 1 degree in distance and 60 seconds in origin time, then a new origin is added to the db origin table using the same evid as the existing origin in db origin. Otherwise a new origin and event are added to db.

OPTIONS

FILES

needs a minimum of arrival table and site table in db.

ENVIRONMENT

needs to be run in ANTELOPE environment

BUGS AND CAVEATS

assoc_rayleigh will associate any origins in origin_db with the "R" arrivals in db. It does not look at magnitudes or any other criteria, so it is possible to get mis-associations. The best way to deal with this is to run dbverify to identify which arrivals are associated with multiple events, followed by dbloc2 to remove the offending events.

SEE ALSO

dbloc2(1), dbverify(1)

AUTHOR

Frank Vernon
UCSD
Antelope User Group Contributed Software
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