Amplitude magnitude relation for velocity seismometers.....................................................49
Relating M
X
to M
L
..................................................................................................................51
Digital data recording and units of amplitude measurement.................................................51
Full digital systems with velocity seismometers...................................................................52
Seismometer instrument types...............................................................................................53
CAL factors for various digitizing systems...........................................................................54
Amplitude magnitude comments...........................................................................................55
Computing two amplitude magnitudes......................................................................................55
P-amplitude magnitudes.............................................................................................................56
Amplitude magnitude command example.................................................................................56
The weighting of duration and amplitude magnitudes..............................................................57
PREFERRED EARTHQUAKE MAGNITUDES.........................................................................57
WEIGHTING OF P & S TIMES...................................................................................................58
Distance Weighting....................................................................................................................59
Residual weighting.....................................................................................................................60
SOME SIMPLE COMMAND SEQUENCES...............................................................................61
COMMANDS RECOGNIZED BY HYPOINVERSE..................................................................63
INPUT FILES............................................................................................................................63
BINARY FILES.........................................................................................................................64
READING ADDITIONAL STATION DATA.........................................................................65
FILE FORMATS AND RELATED CONTROLS....................................................................67
OUTPUT FILES........................................................................................................................70
MULTIPLE CRUSTAL MODELS...........................................................................................71
PROCESS EVENTS IN A PHASE FILE..................................................................................73
PRINTED OUTPUT FORMAT................................................................................................74
TRIAL DEPTH, VELOCITY RATIO & ERRORS..................................................................75
CONVENIENCE AND CONTROL COMMANDS.................................................................76
MAGNITUDES.........................................................................................................................77
CODA DURATION MAGNITUDES.......................................................................................78
AMPLITUDE MAGNITUDES.................................................................................................81
MISCELLANEOUS COMMANDS..........................................................................................84
WEIGHTING OF ARRIVAL TIMES.......................................................................................84
ITERATION AND CONVERGENCE PARAMETERS..........................................................85
OUTPUT FILE FORMATS..........................................................................................................86
Print Output................................................................................................................................86
Station table...........................................................................................................................87
Earthquake iteration output....................................................................................................87
Final location data..................................................................................................................88
Station list data.......................................................................................................................90
Magnitude data output...............................................................................................................91
Quality codes (Hypo71 summary output only)..........................................................................94
OLD PRE-Y2000 OUTPUT FORMATS......................................................................................94
Y2000 OUTPUT FORMATS........................................................................................................97
SAMPLE INPUT AND OUTPUT FILES...................................................................................100
APPENDIX..................................................................................................................................107
Appendix 1: Rules for free format parameters following commands......................................107
