West Coast/Alaska
Tsunami Warning Center
Operations Manual
NOAA/NWS/WCATWC
Palmer,
http://wcatwc.arh.noaa.gov
Section
4.1.1 – atplayer
Last
Updated: 9/2010
Date
Written: 8/2005
Development Language: MicroSoft C/C++ v7 using WinAPI
Necessary Rings:
InRing - WAVE_RING; fills
this up with broadband data from archive disk file
InRingLP
- WAVE_RING_LP; fills this up with long period data
from archive disk file
Necessary Data Files:
LineupFileBB – BB station configuration file derived from archived data
LineupFileLP – LP station configuration file
derived from archived data
StaDataFile - seismometer location, elevation, etc.
Initialization File:
atplayer.d - read on module start-up
Module Description:
The purpose of this program is to simulate events
which have been archived by feeding the data into WAVE_RINGs as if the quake
was occurring. Atplayer reads data from
data files created with disk_wcatwc and sets up the necessary system configuration
files based on the disk header information.
First, Atplayer sets the PC clock
to 1/1/1999. The user selects the
archive data to play back, and then the clock is set to the start time of the
chosen disk file. Muliple events can be
replayed, but the time must always go forward.
That is, an event from 2002 can not be followed by one from 2001. Earlybird must be restarted to go back in
time.
The program is setup to read two
sets of data files for a given time. The
first is the chosen high sample rate broadband data. The second is lower sample rate long period
data. Both sets of data are sent to the
rings.
Program
Controls:
This module has a Windows graphical
interface. Due to this interface, the module will only compile and run
under Windows (NT, 2K, or XP). The display is very simple and just shows the
menu and, when data are being played back, progress bars which show what
percentage of the broadband and long period data have been processed.
Menu Options:
Request
Data: Shows the data directories available in the archive.
Pause
Player: Temporarily stops atplayer from sending data to the ring. When clicked a second time, data starts and
quickly catches up to present time.
Stop
Player: Stops data sending.
Refresh: Re-paint the screen.