NonLinLoc Updates: New Releases, Updates, Bugs

 

Date Type Description
14OCT2003 New Release v2.37 NonLinLoc software v2.37 released (Updated release of the NonLinLoc sofware and documentation.)

New Features:
  1. Time2EQ: Added station active probability.
Updates/Changes:
  1. Grid2GMT: Extended plot height to 27.9 cm
  2. Grid2GMT: Added magnitude to hypocenter info line in plot title

  4. NLLoc: ML Hutton Boore: ML_HB: added optional Ro and Mo parameters: #    ML_HB  amp_fact n K [Ro [Mo]]
  5. NLLoc: HYPO71, HYPO71_OV, HYPOELLIPSE phase input format: Added reading o fcoda duration value
Bug Fixes:
  1. NLLoc: Fixed bug: in OctTree scatter sample: sample was truncated at requested number of points.
  2. Grid2GMT: Fixed bug: in MAPTRANS: transformation was not initialized nor applied correctly
  3. Grid2GMT: Fixed bug: with magnitude assignments when only 1 mag type present
  4. Grid2GMT - Fixed bug: in hypoinverse format (magnitude was ignored), removed error ellipse values to prevent column shifting
  5. Grid2GMT - Fixed bug: in ETH_LOC format of arrival->sec
21JUN2001 New Release v2.32 NonLinLoc software v2.32 released (Updated release of the NonLinLoc sofware and documentation.)

Bug Fixes:
  1. NLLoc: Fixed bug: last.hypo_inv file not written to correct output directory.
18MAY2001 New Release v2.30 NonLinLoc software v2.30 released (Updated release of the NonLinLoc sofware and documentation.)

New Features:
  1. NLLoc: Added copying of output files from last location to files last.hdr, last.hyp, etc.
  2. NLLoc: Added new magnitude type MD_FMAG (duration magnitude) to control statement LOCMAG.
  3. NLLoc: Added SIMULPS format for phase pick files.
  4. NLLoc: Added N Calif Seismic Netowrk (NCSN)format.
  5. NLLoc: Added grid memory management; NLLoc program keeps and re-uses travel-time grids in memory while there is space.
  6. NLLoc: Added Oct-tree importance sampling search method.
  7. NLLoc: Added copying of last event location files to last.hyp and last.hdr.
  8. Grid2GMT: Added plotting of mechanisms and residuals.
  9. NLLoc: Added new STAT_GEOG line to Hypocenter-Phase file output.
  10. Generic control statement MAPLINE: Added support for GMT grd file plotting in Grid2GMT.
  11. Generic: Added new, optional control statement MAPTRANS: Specifies geographic transformation for plotting in Grid2GMT.
  12. Generic: Added new, optional control statement MAPGRID: Specifies grid region for plotting in Grid2GMT.
Updates/Changes:
  1. NLLoc: Added new station parameter sta_corr_fd_fmag (duration magnitude station correction) to control statement LOCCMP.
  2. Seismicity Viewer: Updated version, runs as stand-alone and applet.
  3. NonLinLoc: Binary executable files provided for Linux, no longer for Solaris.
  4. NLLoc: Added max difference of S-P to Hypocenter-Phase file VpVs line output.
  5. NLLoc: Added quick fix for HYPO71 phase data Y2K problem: if year < 20, year = year + 100.
  6. NLLoc: Added quick fix for HYPO71 phase data Y2K problem: if year < 20, year = year + 100.
Bug Fixes:
  1. NLLoc: Fixed bug: hypo-inverse format: W long and S lat were not correctly written to summary file.
  2. NLLoc: Fixed bug: Events with maximum-likelihood hypocenters on y-max boundary of location search grid were not identified as being on the grid boundary, and conseuquently were not "rejected".
  3. NLLoc: Fixed bug in HuttonBoore mag calculation: epicentral and not hypocentral distance was used for r in K(r-100) term; changed to hypocentral distance.
01SEP2000 New Release v2.10 NonLinLoc software v2.10 released (Updated release of the NonLinLoc sofware and documentation.)

Bug Fixes:
  1. Grid2GMT: Fixed bug that map files were not closed when multiple events were processed.
  2. NLLoc: Fixed bug that not all phases were written to hypo-inverse format output file. (Note: Still not all phases are written to HYPO71/HYPOELLIPSE format.)
17FEB2000 New Version v2.00 NonLinLoc software v2.00 released (New version of the NonLinLoc sofware and documentation. Significant changes are indicated in the documentation by (ver 2.0))

New Features:
  1. NLLoc: Control statement LOCMETH: Added minNumberSphases, minimum number of S phases that must be accepted before event will be located (Important: You must add a minNumberSphases value to the LOCMETH statement in any existing NLLoc control files to update them for NLLoc v2.0)
  2. NLLoc: Added new control statement LOCEXCLUDE to explicitly exclude selected station/phase observations from being used for location
  3. NLLoc: output Hypocenter-Phase file: Added Vp/Vs estimation (in VPVSRATIO line) following methodology of Lahr (1989)
  4. Grid2GMT: Added optional override of default GMT-cpt colors. If a GMT-cpt file named Grid2GMT.cpt is present in the directory in which the GMT script is run, it will be used for the plot and scalebar contours levels and colors for all plot types that use contouring.
  5. Grid2GMT: Added optional additional GMT script to be run for each view type. If a GMT script file named Grid2GMT.?.gmt, where ? = H, X, Y or V is present in the directory in which the main GMT script is run, it will be run for the corresponding view (H, X, Y or V)after all standard GMT script is run for that view.
  6. Time2EQ: Added new control statement EQVPVS to specify constant Vp/Vs ratio to allow use of P phase travel-time grids to calculate S phase travel times.
Updates/Changes:
  1. Grid2GMT: Added support for oblique vertical cross sections in V mode and for specification of cross section end points in latitude and logitude (new VL mode).
  2. Time2EQ: Control statement EQSTA: Added NONE error type
Bug Fixes:
  1. NLLoc: Residual calculation in Hypocenter-Phase file: Fixed MAJOR BUG in calculating phase residuals for some travel-time file types if Vp/Vs ratio was used (residual written to output did not correspond to maximum likelihood location)
  2. NLLoc: Phase observation time in Hypocenter-Phase file: Fixed MAJOR BUG that observed times were written to output with delays subtracted for phases with LOCDELAY corrrections
  3. NLLoc: Control statement LOCPHASEID: Fixed bug in identifying "S" phases to use Vp/Vs (S phases not identical to "S" were ignored, regardless of LOCPHASEID settings)
  4. NLLoc: Fixed bug that not all observation file types had phases checked for valid P or S phase code before accepting observation for location
  5. Vel2Grid: Control statement POLYGON2: Fixed bug that velocity gradients in POLYGON2 were reversed (psotive gradients were interpreted as decreasing downwards)
  6. Grid2GMT: Fixed bug that grid files were not closed when multiple events were processed.
07JUL1999 New Release v1.40 NonLinLoc software v1.40 released (Updated release of the NonLinLoc sofware and documentation.)

Updates/Changes:
  1. Grid2Time: Substitution of more recent version of the eikonal finite-difference code Time_3d.c (7 May 1993) for previous version Time_3d_fs.c (2 January 1992). The newer code seems to run faster and be more robust than the previous while producing identical results.
  2. Grid2GMT: Added parameters and commands in output GMT script for optional plotting in Lat/Long coordinates of unrotated, horizontal only views.
25JUN1999 New Release v1.30 NonLinLoc software v1.30 released (Updated release of the NonLinLoc sofware and documentation.)

Updates/Changes:
  1. Generic control statement TRANS: Implemented rotAngle in LAMBERT transformation.
08APR1999 New Release v1.21 NonLinLoc software v1.21 released (Fourth "Beta" release of the NonLinLoc sofware and updated documentation.)

Updates/Changes:
  1. NLLoc: LOCMETH Added parameter to limit maximum number of 3D travel time grids read into memory for Metropolis-Gibbs search. This helps to avoid time consuming memory swapping.
10MAR1999 New Release v1.2 NonLinLoc software v1.2 released (Third "Beta" release of the NonLinLoc sofware and updated documentation.)

New Features:
  1. NLLoc: LOCMETH Added option for constant Vp/Vs ratio to allow use of P phase travel-time grids to calculate S phase travel times.
Updates/Changes:
  1. Generic control statement CONTROL: Added random number seed.
Bug Fixes:
  1. NLLoc: Fixed bug that automatic x grid positioning could not be switched off (see Control statement LOCGRID).
25JAN1999 New Release v1.1 NonLinLoc software v1.1 released (Second "Beta" release of the NonLinLoc sofware and updated documentation.)

New Features:
  1. NLLoc: Control statement LOCPHSTAT: Added RMS_Max, NRdgs_Min and Gap_Max cutoffs for selection of residuals to be used in calculation of average residuals.
  2. Grid2Time: Control statement GTSRCE: Added LATLONDS (degrees + minutes + decimal seconds latitude/longitude) format for source location.
  3. Time2EQ: Added control statement EQMECH to allow specification of a double couple or explosion mechanism for synthetic first motion calculation.
  4. Time2EQ: Added control statement EQSRCE to allow specification of multiple sources.
  5. Time2EQ: Control statement EQSTA: Added FIX option to allow a fixed noise or static shift to travel time.
  6. Time2EQ: Control statement EQSTA: Added parameters errorReportType and errorReport to specify how phase error is written to phase file.
  7. Time2EQ: Added control statement EQMODE to select calculation of times from single source to multiple stations or from multiple sources to single station.
  8. Time2EQ: Added control statement EQQUAL2ERR to allow mapping of errorReport to HYPO71 format quality levels.
  9. LocSum: Added additional command arguments Len3Max, ProbMin, RMSMax, NRdgsMin and GapMax to filter events that are summed.
Updates/Changes:
  1. Generic control statement TRANS: Implemented rotAngle in SIMPLE transformation.
  2. NLLoc: Grid-Search and Control statement LOCGRID: Automatic grid shifting added to attempt to get nested grids inside original grid.
  3. NLLoc: Metropolis-Gibbs search: Initial walk location now set under the station with earliest arrival time. Algorithm for automatic setting of initial step size changed.
  4. NLLoc: Metropolis-Gibbs search: Walk algorithm modified to handle the case that new walk locations are rejected for a large number of consequetive tries. This case may indicate that the search has found a deep, narrow minima in misfit.
  5. Grid2GMT: 2D error ellipses replaced by projections of 3D confidence ellipsoid.
Bug Fixes:
  1. Generic control statement INCLUDE: Implemented for programs Vel2Grid, Grid2Time, Time2EQ and NLLoc.
20JAN1999 Warning NLLoc: Magnitude Calculation Method not extensively tested

The magnitude calculation option in NLLoc, control statement LOCMAG, has not yet been extensively tested.
20JAN1999 Known Bug Grid registration not specified

NonLinLoc software 3D Grid File format does not distinquish between Grid line registration (used for travel times, angles, etc) and Pixel registration (required for velocity models input to Grid2Time/Podvin-Lecomte) as defined by the GMT plotting package.
11AUG1998 New Release v1.0 NonLinLoc software v1.0 released (Initial "Beta" version of the NonLinLoc sofware and documentation.)

 

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Anthony Lomax