Geogiga Seismic Pro 8.0 Release Notes
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1 Geogiga Seismic Pro 8.0 Release Notes Copyright 2015, All rights reserved.
2 Table of Contents Introduction...1 Part 1 General Enhancements...3 Trace Display...4 Color Section Display...6 Curve Plotting...8 Seismic Data Importing...9 Minor Updates...10 Bug Fixes...11 Part 2 Front End...12 Vertical Stacking...13 Merging Traces...14 Splitting Files...15 Part 3 Seismapper...16 Part 4 Modeling...17 Part 5 Reflector...18 Data Processing Log...19 Instantaneous Q...20 Divergence Correction...21 Gather Saving...22 Display of Attributes...23 Part 6 SF Imager...24 Saving First-arrival Picks...25 Reversing Seismic Section...26 Part 7 Refractor...27 Segmenting Surface Velocity...28 Shifting First-break Picks...29 Part 8 DW Tomo...30 Counting Shot Depth in Geometry Assignment...31 Checking Geometry without Loading Seismic Data...32 Building an Initial Layered Gradient Model...33 Calculating Tomostatics...34 Exporting Trimmed Model...35 Hiding First-break Picks on Seismic Traces...36 Geogiga Seismic Pro 8.0 Release Notes i
3 Part 9 Surface...37 Trace Balancing...38 Apparent Velocity...39 Effective Array Center...40 Display of Dispersion Image...41 Love Wave...42 Average Velocity and SPT-N Values...43 Minor Updates...44 Bug Fixes...44 Part 10 Surface Plus...45 CMPCC Gathers...46 Strong Noises...47 Deselected Traces...48 Part 11 Surface 3D...49 Part 12 XW Tomo...50 Using Straight-line Paths...51 Trimming Inverted Velocity Model...52 Exporting Trimmed Model...53 Geogiga Seismic Pro 8.0 Release Notes ii
4 Introduction This documentation introduces the release of Geogiga Seismic Pro 8.0. Geogiga Seismic Pro is a complete seismic data processing and interpretation software package adapted to near-surface geophysics. It contains 16 standalone applications handling the full range of seismic survey methods from Reflection, Refraction, and Surface Wave to Borehole Seismic. There are also Utilities for wavefield modeling, velocity model plotting, and much more. In this release, the following new features have been added into the display settings: Traces Automatically save and restore most parameters of trace display; enable choosing multiple types of trace headers in labeling the x-axis. Color Section Enable reversing color section and color map; select contours to be plotted. Curves Change the foreground and background colors; define the type of tick mark for axis annotations. Some of the most important updates in this release are listed as follows: Front End Automate vertical stacking for multiple locations at one time; merge traces of multiple records to form a longer record; split a seismic data file into multiple files. Seismapper Plot the trimmed velocity model. Modeling Simultaneously model P and S waves. Reflector Create a processing log to save and restore the parameters in processing seismic data; calculate instantaneous Q; input a velocity table for divergence correction; add trigger delay correction; save all single gathers at one time. SF Imager Save first-arrival picks for trace alignment; reverse seismic section. Refractor Enable segmenting surface velocity; allow trigger delay correction with or without shifting first-break picks. DW Tomo Build an initial layered gradient velocity model based on the traveltime curves; calculate tomostatics; save the trimmed model in XZV format with a blanking file; add shot depth in assigning geometry; check the geometry without seismic data; toggle the visibility of first-break picks on seismic traces.
5 Surface Add the trace balancing option in dispersion analysis; support the dispersion curve inversion of Love wave; calculate the effective array center according to selected traces; add more options to set the display of dispersion image, calculate an average velocity with defined start depth and thickness; calculate SPT-N values. Surface Plus Build common midpoint cross-correlation (CMPCC) gathers; remove strong noises from passive surface waves; combine dispersion images excluding the deselected traces. Surface3D Annotate axes and plot gridlines. XW Tomo Enable using straight-line paths for ray tracing, trim inverted model based on ray coverage; save the model in XZV format with a blanking file. PS Log Allow deselecting the annotation of bottom x-axis in plotting curves. There are also minor updates and bug fixes in this release. For details, please read the following sections. Introduction 2
6 Part 1 General Enhancements The following enhancements apply to most of the applications in Geogiga Seismic Pro 8.0: Trace display Color section display Curve plotting Seismic data importing There are also minor updates and bug fixes. Part 1 General Enhancements 3
7 Trace Display Automatically save and restore most display parameters. Label the x-axis with multiple selected trace headers. Automatically saving most display parameters Part 1 General Enhancements 4
8 Labeling the x-axis with multiple selected trace headers Part 1 General Enhancements 5
9 Color Section Display Enable selecting contours to be plotted, and add the Reverse button to reverse the colormap in the Section Grade Definition dialog box. Add options to reverse a color section and select the type of tick mark for axis annotations in the Section Display Control dialog box. Selecting contours to be plotted Part 1 General Enhancements 6
10 Reversing color section Part 1 General Enhancements 7
11 Curve Plotting In the Curve Display dialog box, change the foreground and background colors, and select the type of tick mark for axis annotations. Changing the foreground and background colors Part 1 General Enhancements 8
12 Seismic Data Importing When importing seismic data in the Geometry Assignment and Files Integration dialog box: Automatically check whether there are duplicate records with the equivalent shot and receiver coordinates. Save assigned geometry in raw seismic data files. The Geometry Assignment and Files Integration dialog box Part 1 General Enhancements 9
13 Minor Updates The following is the list of minor updates for all applications in Geogiga Seismic Pro 8.0: Change the cursor to wait while starting an application from the Geogiga Seismic Pro Launchpad. Show cursor feedback with frequency in the Frequency Filter dialog box. Show cursor feedback with frequency in the FK Filter dialog box. Prompt to input a filename when saving an image if the output filename is not yet entered in the Save Image dialog box. There are also minor updates in the following applications: Front End Add the Common Source option to merge multiple shots into one shot gather when integrating multiple files. Seismapper Extend the maximum number of samples allowed when plotting seismic stacks. Reflector Add trigger delay correction; change the term Common Depth Point (CDP) to Common Midpoint (CMP). Refractor Allow vertically reversing the display of traveltime curves. PS Log Enable deselecting the annotation of bottom x-axis in plotting curves. Part 1 General Enhancements 10
14 Bug Fixes The following is the list of bug fixes for all applications in Geogiga Seismic Pro 8.0: The last sample point of a trace was unable to be displayed occasionally when the sampling length included a small decimal. The map scales shown in the Section Display Control dialog box were inconsistent. The seismic data images, saved or printed, were inconsistent with those plotted on the screen. The contour plotting crashed when the Label option was chosen without selecting the Contour option in the Section Grade Definition dialog box. The application exited when the user clicked the Cancel button in the prompt message box asking to save changes after clicking the Close (X) button in the upper right corner of the main window. There are also bug fixes in the following applications: SF Imager Axis annotations were too sparse in the Predictive Deconvolution and Spiking Deconvolution dialog boxes; velocity table was incompletely saved. DW Tomo Ray paths distorted when negative elevations were present. XW Tomo Annotations on the y-axis were sparse in the Fitting Error QC dialog box. VSP The wavefield separation stopped working after the geometry was changed. Part 1 General Enhancements 11
15 Part 2 Front End Front End 8.0 includes the following new features: Automate vertical stacking for multiple locations Merge traces of multiple records to form a longer record Split a seismic data file into multiple files Part 2 Front End 12
16 Vertical Stacking With the Group option, vertical stacking can be automated for multiple locations at one time. Batch vertical stacking Part 2 Front End 13
17 Merging Traces The traces of multiple records can be merged to form a longer record. Merging traces of multiple records Part 2 Front End 14
18 Splitting Files A seismic data file can be split into multiple files. Splitting files Part 2 Front End 15
19 Part 3 Seismapper Seismapper 8.0 can plot trimmed velocity models generated from DW Tomo and XW Tomo. Plotting trimmed velocity models Part 3 Seismapper 16
20 Part 4 Modeling Modeling 8.0 is now able to simultaneously model P and S waves. The geometry of receivers can be defined with locations instead of an offset. Modeling P and S waves simultaneously Part 4 Modeling 17
21 Part 5 Reflector Reflector 8.0 includes the following new features: Data processing log Calculation of instantaneous Q Input of a velocity table for divergence correction Save all single gathers at one time In Reflector 8.0, the display of attributes can be separately set. Part 5 Reflector 18
22 Data Processing Log With a log file, processing parameters can be saved and restored for each processing step. Creating a data processing log Part 5 Reflector 19
23 Instantaneous Q In the Create Attributes dialog box, select the Q option to calculate the instantaneous Q. Calculating Instantaneous Q Part 5 Reflector 20
24 Divergence Correction In the Divergence Correction dialog box, input a constant velocity or a velocity table. Inputting a velocity table for divergence correction Part 5 Reflector 21
25 Gather Saving With the All option, saving gathers can be automated for all locations at one time. Outputting all single gathers Part 5 Reflector 22
26 Display of Attributes The display of attributes can be individually modified with the Trace Display dialog box. Display of attributes Part 5 Reflector 23
27 Part 6 SF Imager SF Imager 8.0 includes the following new features: Save first-arrival picks Reverse seismic section Part 6 SF Imager 24
28 Saving First-arrival Picks First-arrival picks can be saved and loaded for trace alignment. Picking first arrivals for trace alignment Part 6 SF Imager 25
29 Reversing Seismic Section A Reverse command is included in the Geometry Definition dialog box to reverse a section. Reversing seismic section Part 6 SF Imager 26
30 Part 7 Refractor Refractor 8.0 includes the following new features: Segment surface velocity Trigger delay correction with or without shifting first-break picks Part 7 Refractor 27
31 Segmenting Surface Velocity To allow surface velocity varying along the profile, segment surface velocity in the dockable Surface Velocity Definition window. Segmenting surface velocity Part 7 Refractor 28
32 Shifting First-break Picks An option is added in the Trigger Delay Correction dialog box to either shift or not shift firstbreak picks along with seismic data. Shifting first-break picks in trigger delay correction Part 7 Refractor 29
33 Part 8 DW Tomo DW Tomo 8.0 includes the following new features: Count shot depth in geometry assignment Display geometry without loading seismic data Build an initial layered gradient velocity model based on traveltime curves Calculate tomostatics Export trimmed model in XZV format with a blanking file Toggle the visibility of first-break picks on seismic traces Part 8 DW Tomo 30
34 Counting Shot Depth in Geometry Assignment When importing seismic data, input shot depth in the Geometry Assignment and Files Integration dialog box. Inputting shot depth Part 8 DW Tomo 31
35 Checking Geometry without Loading Seismic Data After loading traveltime curves, check the geometry without seismic data. Checking geometry without seismic data Part 8 DW Tomo 32
36 Building an Initial Layered Gradient Model An initial layered model can be input or calculated based on traveltime curves. After that, a gradient model is built according to the layered model. Building an initial layered gradient model based on traveltime curves Part 8 DW Tomo 33
37 Calculating Tomostatics The source and receiver statics are calculated based on the inverted velocity model. Calculating tomostatics Part 8 DW Tomo 34
38 Exporting Trimmed Model The trimmed velocity model can be exported in XZV format for: Directly plotting in Seismapper Plotting in a 3rd party program with a blanking file Exporting trimmed model Part 8 DW Tomo 35
39 Hiding First-break Picks on Seismic Traces In the TT Curve Visual dialog box, toggle the visibility of first-break picks on seismic traces. Hiding first-break picks on seismic traces Part 8 DW Tomo 36
40 Part 9 Surface Surface 8.0 includes the following new features: Trace balancing Test of apparent velocity with tooltip display Calculating the effective array center according to the selected traces More options to control the display of dispersion image Dispersion curve inversion of Love wave Calculation of average velocity and SPT-N values There are also minor updates and bug fixes. Part 9 Surface 37
41 Trace Balancing In the Dispersion Analysis dialog box, select the Trace option to balance seismic traces for calculating dispersion images. Without Trace Balancing With Trace Balancing Dispersion images without and with trace balancing Part 9 Surface 38
42 Apparent Velocity To estimate the maximum velocity in dispersion analysis, drag the left mouse button along the surface wave event to test apparent velocity with the tooltip display. Testing apparent velocity Part 9 Surface 39
43 Effective Array Center The effective array center is determined according to the selected traces for dispersion analysis. To deselect a trace, click the left mouse button on the top x-axis. Re-clicking the left mouse button at the same location will cancel the deselection of a trace. To quickly deselect multiple traces, hold the Ctrl key and drag the left mouse button along the top x-axis. Holding the Shift key and dragging the left mouse button along the same locations will cancel the deselection of multiple traces. Deselecting traces for dispersion analysis Part 9 Surface 40
44 Display of Dispersion Image There are more options in the Spectrum Display dialog box to change the display of dispersion image: Setting the annotation interval of the axes Enable changing the start frequency Setting the display of dispersion image Part 9 Surface 41
45 Love Wave When inverting dispersion curves, select the type of waves between Rayleigh Wave and Love Wave in the Inversion Settings dialog box. Selecting Love wave for dispersion curve inversion Part 9 Surface 42
46 Average Velocity and SPT-N Values In the Curve Properties dialog box: Input start depth and thickness to calculate an average velocity. Define the formula between Vs and N, and then calculate SPT-N values. In the Export Files dialog box, export selected data to a text file. Calculating and exporting average velocity and SPT-N values Part 9 Surface 43
47 Minor Updates The following is a list of minor updates in Surface 8.0: Allow the minimum of two receivers for the calculation of dispersion image. Set the limit of maximum frequency in dispersion analysis based on the sample rate. Ensure the start velocity is shown on the dispersion image. Automatically save the smoothing options chosen in the Section Gridding dialog box. Disable selecting dispersion curve during inversion. Bug Fixes The following is a list of bug fixes in Surface 8.0: The upper frequency line in the Spectrum Analysis dialog box was not updated when the dialog box was opened from the Dispersion Analysis dialog box. The apparent velocity curve was smoothed even though the smoothing length was set to zero. Time segments were not set properly when different seismic data files were loaded without exiting the application. Part 9 Surface 44
48 Part 10 Surface Plus Surface Plus 8.0 includes the following new features: Build common midpoint cross-correlation (CMPCC) gathers for active surface waves Automatically remove strong noises from passive surface waves Combine dispersion images excluding the deselected traces Part 10 Surface Plus 45
49 CMPCC Gathers CMPCC gathers can be built through the Build CMPCC Gather dialog box. The Build CMPCC Gather dialog box Common Shot Gathers CMPCC Gathers Converting shot gathers to CMPCC gathers Part 10 Surface Plus 46
50 Strong Noises In the Dispersion Analysis dialog box, select the Remove Noise option to automatically remove strong noises from passive surface waves. Options to remove strong noises from passive surface waves Part 10 Surface Plus 47
51 Deselected Traces Deselected traces are excluded in merging dispersion images. Excluding the deselected traces in merging multiple dispersion images Part 10 Surface Plus 48
52 Part 11 Surface 3D Surface3D 8.0 is now able to annotate axes and plot gridlines. Annotating axes and plotting gridlines Part 11 Surface 3D 49
53 Part 12 XW Tomo XW Tomo 8.0 includes the following new features: Use of straight-line paths for ray tracing Trim inverted velocity model based on ray coverage Export trimmed model with a blanking file Part 12 XW Tomo 50
54 Using Straight-line Paths In the Tomography Settings dialog box, select the Straight Lines option to use straight-line paths for ray tracing. Deselecting this option will use bent-ray paths for ray tracing. Using straight-line paths for ray tracing Part 12 XW Tomo 51
55 Trimming Inverted Velocity Model The inverted velocity model can be trimmed based on ray coverage. Trimming inverted velocity model Part 12 XW Tomo 52
56 Exporting Trimmed Model The trimmed model can be exported in XZV format for: Directly plotting in Seismapper Plotting in a 3rd party program with a blanking file Exporting trimmed model Part 12 XW Tomo 53
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