MSEI - Microseismic Events

                    Titles:  MSEI - Microseismic Events
                    ===================================
 
    Contact:  J. Roberts SNO
 
    Revision History:-
    ================
 
    3.02  J. Roberts  First version: preliminary plan.



 
Titles Files
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???
 
 
Verification
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Description
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Bank Number:  1

The Microseismic banks consist of individual events detected by the SNO
geophones, and software written by the Engineering Seismology Group
(www.esg.ca).

The microseismic events are written to a titles file generally within five
seconds of detection, and are also packaged and dispatched to any interested
process (snostream).  The titles files are finalized and shipped to
surf.sno.laurentian.ca every morning within five minutes after midnight.

Data Words
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        Fixed length Database Header.  See titles_dbhdr.html

    Data types: B(bit), I, F, D(double), H(hollerith 4 char)

 Word  Type  Mnemonic      Description

              KMSEI_

    1   I     NEVENTS       Total number of events in the titles file
    2   I     NWORDS        Number of words in each event
 3..10  I                   Header.  Currently unused (all words zero)
    11  I     TABLE         Start of data.  Event n (zero based) can be found
                              at KMSEI_TABLE + n*KMSEI_NWORDS

Following the header (starting with word KMSEI_TABLE) are the day's events,
according to the words at KMSEI_NEVENTS and KMSEI_NWORDS.

 Word  Type  Description

    1   I     Date of event, in the form YYYYMMDD
    2   I     Time of event, in the form HHMMSScc
 3..10  F     Time difference of each channel's first waveform, relative to
                the time of the first channel's waveform.  A zero in any of
                these words except word 4 means that channel was the first to
                detect a waveform.  Time differences are in milliseconds.
                Word 4 is connected to a non-functional channel.
 11..18 F     Maximum amplitude of each channel's waveform, in volts.  A rough
                estimate of an event's loudness can be arrived at by averaging
                these words.  Ignore word 12 as it is connected to a
                non-functional channel.