Contents

• 1. Introduction
  • 1.1 Changes for the SEISAN version 13.02 (released 2023-12-06)
  • 1.2 Changes in the SEISAN version 12.0 (released 2021-06-08)
    • 1.2.1 A new Nordic Format, Nordic2
  • 1.3 Information about SEISAN online
  
  
• 2. Structure of SEISAN
  • 2.1 Directories
  • 2.2 The database
    • 2.2.1 Phase data and hypocenters
    • 2.2.2 Waveform data and formats
    • 2.2.3 Continuous waveform data
  • 2.3 File types used with SEISAN
  • 2.4 Upper and lower case
  • 2.5 Moving data between Sun, Linux, MacOSX and Windows
  
  
• 3. Installation
  • 3.1 Quick start with test data
  • 3.2 Linux
  • 3.3 MacOSX
  • 3.4 Cygwin
  • 3.5 Windows
  • 3.6 Python
  • 3.7 Google Earth
  • 3.8 Database directories for your own system, MAKEREA
  • 3.9 Default parameter files for the main programs
  • 3.10 Color settings
  • 3.11 Compiling SEISAN programs
    • 3.11.1 Linux
    • 3.11.2 MacOSX
    • 3.11.3 Windows
  • 3.12 Program Version
  • 3.13 Setting general SEISAN defaults, SEISAN.DEF
  • 3.14 Format description in parmater files
  
  
• 4. Seisan Explorer User Guide
  • 4.1 SE Locator
  
  
• 5. Using SEISAN
  • 5.1 Short user guide
    • 5.1.1 Routine processing
    • 5.1.2 Source parameters
    • 5.1.3 Crustal structure and Q
    • 5.1.4 Magnitudes in SEISAN
    • 5.1.5 Catalog and database work
    • 5.1.6 Seismic hazard
  • 5.2 Getting data into the database
    • 5.2.1 System with digital data
    • 5.2.2 Instrument response
    • 5.2.3 System without digital data
    • 5.2.4 Getting data from ISC into SEISAN
    • 5.2.5 Getting data from USGS or EMSC into SEISAN, get_web_locations
  • 5.3 Data base tools, security and backup
    • 5.3.1 Database security
    • 5.3.2 Data base tools, content and checks
    • 5.3.3 Backup of S-file data base
    • 5.3.4 High accuracy in SEISAN
  • 5.4 Interactive work with earthquake locations, EEV command
  • 5.5 How EEV works
  • 5.6 Working with catalogs
    • 5.6.1 Explosions in SEISAN
  • 5.7 Printing
  • 5.8 General Work with SEISAN
  • 5.9 Graphics in SEISAN
  • 5.10 Logging in SEISAN
  • 5.11 Known problems in SEISAN
  
  
• 6. Description of Programs and Commands
• 7. Hypocenter location programs: HYPOCENTER, HYPO71 and HYPOINVERSE
  • 7.1 The hypocenter program, HYP
    • 7.1.1 Phases
    • 7.1.2 Azimuth and single station location
    • 7.1.3 Magnitudes
    • 7.1.4 Use of S-P and L-S differences
    • 7.1.5 Global event location
    • 7.1.6 Criteria for a solution and weighting
    • 7.1.7 Eliminating outliers
    • 7.1.8 Determining which travel time software is used
    • 7.1.9 Starting location
    • 7.1.10 Station travel time delay and magnitude correction
    • 7.1.11 Putting in geographical location
    • 7.1.12 Preventing a local minimum
    • 7.1.13 Alternative model
    • 7.1.14 Location by grid search
    • 7.1.15 Using HYP to determine crustal structure
    • 7.1.16 Running HYP
    • 7.1.17 Station and model files
    • 7.1.18 RESET TEST parameters
    • 7.1.19 HYP output
    • 7.1.20 Problems
  • 7.2 The Hypoinverse program, HYPINV
  • 7.3 Plugin for the iLoc location algorithm, ILOC_SEISAN (Linux only)
  • 7.4 Plugin for the NonLinLoc location algorithm, NLL_SEISAN (Linux only)
  
  
• 8. Trace plotting, phase picking and spectral analysis, MULPLT
  • 8.1 MULPLT main functions
  • 8.2 Use of MULPLT from EEV and SE
  • 8.3 Working with many channels in MULPLT
  • 8.4 Continuous plotting of one channel
  • 8.5 Commands in MULPLT, overview
  • 8.6 Registering new events into SEISAN
  • 8.7 Phase picking, amplitude, weight and polarity
  • 8.8 Theoretical arrival times for global and local phases and location
  • 8.9 Instrument correction and magnitudes Ml, mb and Ms
  • 8.10 Determine azimuth of arrival (3 comp or array) and component rotation
  • 8.11 Data manipulation commands
  • 8.12 Spectral analysis, s(Spec)
  • 8.13 Spectrogram
  • 8.14 Particle motion plots
  • 8.15 Setting MULPLT parameters, MULPLT.DEF
  
  
• 9. Distance trace plot with GMT, TRACE_PLOT (Unix only)
• 10. Plotting epicenters
  • 10.1 EPIMAP
  • 10.2 MAP, running EPIMAP without questions
  • 10.3 W_EMAP, Version Windows based map program
  • 10.4 MAPG, a simple automatic GMT map
  • 10.5 GMAP, Plotting epicentres with Google maps or Google Earth
    • 10.5.1 The simple GMAP
    • 10.5.2 The advanced GMAP
    • 10.5.3 The automatic GMAP
  • 10.6 SEIS2VIEWER, Plotting hypocentres in 3D
  
  
• 11. Searching in the database, SELECT and others
  • 11.1 SELECT
    • 11.1.1 Input parameters for SELECT
    • 11.1.2 Option for codaq
    • 11.1.3 Historical data
    • 11.1.4 Select with input from the prompt line
  • 11.2 Getstressdrop
  
  
• 12. Extracting events from the database, COLLECT
• 13. Inserting events into the database, SPLIT
• 14. Updating final locations in database, UPDATE and UPD
• 15. Using filenr.lis, DIRF and DELF
• 16. Making a bulletin, BUL
• 17. Reports and statistics
  • 17.1 REPORT, extract data from CAT file
  • 17.2 NORHEAD, making a compact Nordic file from a Nordic file
  • 17.3 STATIS, statistics of databases
  • 17.4 CATSTAT, statistics of catalogs
  • 17.5 SWARM, finding earthquake swarms
  • 17.6 STATSTAT, number of events per seismic station in catalog
  • 17.7 LSQ, plotting a linear relation or a curve
  
  
• 18. Waveform file management tools
  • 18.1 APPEND, Append two or more waveform files
  • 18.2 AUTOREG, automatic registering of events
  • 18.3 CONGAP, check completeness of continuous waveform database
  • 18.4 CONNOI and EVANOI, noise power spectral density
  • 18.5 DATABASE2MSEED, convert database to miniseed
  • 18.6 WAVETOOL, extract and convert waveform data
  • 18.7 GET_ARC, extract waveform files from the archive corresponding to S-files and register the name in the S-file.
  • 18.8 GET_ARC_CHANNELS, get a listing of all channels in an archive for SEISAN.DEF
  • 18.9 GET_WAV, get listing of available waveform and response files
  • 18.10 RDSEED_MANY, chop up seed file
  • 18.11 SEIASC, converting SEISAN waveform files to or from ASCII
  • 18.12 SEICUT, extract part of a waveform file
  • 18.13 SEIDEL, splitting a SEISAN binary file into 2 files
  • 18.14 SEISEI, splitting and merging SEISAN readable binary files
  • 18.15 P_ALIGN: Time shifting waveform data to align on P or S-phase arrival times.
  • 18.16 WAVFIX, fixing time correction and channel names in waveform file headers and make standard file names
  • 18.17 WAV_ADD, add waveform file names to S-files
  • 18.18 WAVFULLNAME
  
  
• 19. File conversion and modification programs
  • 19.1 Parameter files
    • 19.1.1 Nordic to QuakeML converter
  • 19.2 Waveform conversion programs
  
  
• 20. Signal processing programs
  • 20.1 SAC2000
  
  
• 21. Automatic routines in SEISAN
  • 21.1 AUTOPIC and AUTO
  • 21.2 AUTOPHASE, automatic phase picking
  • 21.3 AUTOSIG
  • 21.4 AUTOMAG
  • 21.5 PLOTSPEC
  • 21.6 Detection program for continuous data, CONDET
  • 21.7 NETDET, event detection and location in real time or offline
  • 21.8 SCPNOR, getting detections from SeisComp in real time or manually
  
  
• 22. Calculating b-value, BVALUE
• 23. Fault plane solution
  • 23.1 FOCMEC
    • 23.1.1 Use of amplitudes
    • 23.1.2 Automatic reading of amplitudes
    • 23.1.3 Polarity selection
    • 23.1.4 Local earthquakes
    • 23.1.5 Program operation
    • 23.1.6 Making synthetic amplitudes and polarities to test FOCMEC and HASH
  • 23.2 FPFIT
  • 23.3 HASH
    • 23.3.1 Running HASH from EEV
    • 23.3.2 Explanations of output
  • 23.4 PINV
  • 23.5 Fault plane solution program to use and some advice
  • 23.6 Composite fault plane solution using any of the programs FOCMEC, FPFIT, HASH and PINV
  • 23.7 Moment tensor inversion program, INVRAD
  • 23.8 Plotting fault plane solutions
  • 23.9 FOC: Plot many FPS, stress inversion and Rose diagram
  • 23.10 PLOTFOC, plotting fault plane solution without need for station informtion
  • 23.11 MOPAD, plotting a moment tensor solution and more
  
  
• 24. Quick plotting and changing of phases and polarities, PLOTPHASE and PLOTPOLARITY
• 25. Measuring amplitude ratios, AUTORATIO
  • 25.1 Plotting amplitude ratios, PLOTRATIO
  
  
• 26. Waveform inversion
  • 26.1 Moment Tensor inversion in SEISAN
  
  
• 27. Calculation of coda q, CODAQ, and related programs
  • 27.1 Codaq
    • 27.1.1 Input
    • 27.1.2 Program operation
    • 27.1.3 Output files
    • 27.1.4 General recommendations and example of test data
  • 27.2 Program CODAQ_AREA
  • 27.3 Program CODAQ_POLYGON
  • 27.4 Program QSTAT
  • 27.5 Program AVQ, average Q-relations
  
  
• 28. Merge events in SEISAN and compare catalogs
  • 28.1 Merge events near in time ASSOCI
  • 28.2 Merge events near in time and delete duplicate phases, MERGE_S
  • 28.3 Merge events near in time, distance, depth and magnitude ASSO
  • 28.4 Catalogue merging and comparison with merge_seisan.pl
  • 28.5 COMPARE_HYP, compare hypocenters of two cat-files
  • 28.6 COMP_HYP, compare hypocenters of two Nordic files
  
  
• 29. Making synthetic seismograms
• 30. Calculation and plotting of travel times
  • 30.1 IASPEI travel time software, program TTIM
  • 30.2 Calculation of travel times for layer and gradient model, TTLAYER
  • 30.3 Calculating of local phases: TTLOCAL
  • 30.4 Plotting of travel times, TTPLOT
  • 30.5 IASP, travel times for MULPLT
  
  
• 31. Wadati
• 32. Calculating spectra and attenuation
  • 32.1 Spec program
  • 32.2 Calculating kappa, KAPPA
  • 32.3 Sorting kappa values, KAPPA_SORT
  
  
• 33. Seismic risk related programs
  • 33.1 Useful programs for hazard
  • 33.2 CRISIS2012
  • 33.3 SEISAN EXPLORER:
  • 33.4 CLUSTER
  
  
• 34. Magnitude and spectral relations, MAG
• 35. ML inversion, MAG2
  • 35.1 MAGSTAT
  
  
• 36. MAGRES, calculate average magnitude residuals
• 37. Explosion filtering, EXFILTER
• 38. Inversion of travel time data and joint hypocenter determination
  • 38.1 VELEST
  • 38.2 Grid search to obtain crustal structure
  • 38.3 NOR2DD
  • 38.4 hypoDD
    • 38.4.1 hypoDD example
  • 38.5 NOR2SIMULPS, NOR2SIMULR
  • 38.6 NOR2JHD_PUJOL
  
  
• 39. Analysis of volcanic earthquakes
• 40. FK Analysis
• 41. Instrument response
  • 41.1 Create instrument response files, RESP
  • 41.2 Examples of main response files from seismometers and accelerometer
  • 41.3 SEED response
  • 41.4 SEED response to GSE, SEEDRESP2GSE
  • 41.5 GSE response to SEED, GSERESP2SEED
  
  
• 42. Macroseismic data in SEISAN
• 43. Correlation of waveform signals, CORR and detection of event clusters XCLUST
• 44. Programming in SEISAN and list of files in SEISAN distribution
  • 44.1 Programmers guide and some test programs
  • 44.2 Routines for Geodetic computations (WGS84)
  • 44.3 CONTENTS OF PRO, LIB, INC, INF, COM, DAT, SUP, ISO and PIC DIRECTORIES
  
  
• References
• A. The Nordic format
• B. The SEISAN waveform file format
• C. Response file formats used in SEISAN
  • C.1 SEISAN response format
  • C.2 GSE response format
  • C.3 SAC format
  • C.4 RESP format
  
  
• D. Some general subroutines in SEISAN in LIB
• E. Changelog
  • E.1 Changes in the SEISAN version 11 (2018-06-07)
  • E.2 Changes in SEISAN version 10.5 (2016-11-18)
  • E.3 SEISAN version 10.4.1 (2016-06-08)
  • E.4 SEISAN version 10.4 (2016-03-31)
  • E.5 SEISAN version 10.3 (2015-01-17)
  • E.6 SEISAN version 10.2 (2014-09-20)
  • E.7 SEISAN version 10.1 (2014-06-19)
  • E.8 SEISAN version 10.0 (2013-06-11)
  • E.9 SEISAN version 9.1 (2013)
  • E.10 SEISAN version 9.0.1 (2011)
  • E.11 SEISAN version 9.0 (2011)
  • E.12 SEISAN version 8.3 (2010-06-05)
  • E.13 SEISAN version 8.2.1 (2008-10-10)
  • E.14 SEISAN version 8.2 (2008)
  
  
• Index