Gravity inversion (C11)
Contents
1. Line Number Cancel FID Time LINE Clearance Depth LINE Library Help Top 2012 Intrepid Geophysics 4 Back gt INTREPID User Manual Gravity inversion C11 2 Library Help Top 4 Back gt Tip Note Do not confuse the Depth field from this marine gravity survey with the estimated depth to simple Bouguer anomaly that we calculate Choose Gravity Inversion from Standard in New Filter in the Filter menu mi Intrepid Line Filter 3 4 cut 61 Fie New Filter Standard AGC Current Filter Properties Composite Gravity Inversion User Defined amp Strip Gravity Laver Load Filter Save Filter Band Pass Band Retect INTREPID displays the Gravity Inversion filter properties dialog box Set the values as shown in the illustration Gravity Inversion Filter Properties Gravity Inversion Filter Properties Gravity Inversion Filter Properties Free Ai or Bouqguer units must be mgal Filter Name IGRAVINY U ntithed Filter Space SPATIAL density Contrast 400 kg m 3 Start Depth for Estimation 3000 m Optional Maximum Depth to Interface 10000 m Optional Minimum Depth to Interface m Maximum Number of Iterations 10 Sub S ample Freq 10 Start with quite a coarse horizontal step Output ptrons Depth to Anomolies Calculated Response from Anomolies OK Cancel Choose OK Library Help Top 2012 Intrepid Geophysics 4 Back gt INTREPID Use2. INTREPID User Manual Gravity inversion C11 1 Library Help Top 4 Back gt Gravity inversion C11 tap The INTREPID Line Filter tool has a Gravity Inversion filter It can estimate the depth to the simple Bouguer anomaly or complete Bouguer anomaly In this worked example we estimate depth to the simple Bouguer anomaly Location of sample data for Cookbooks Where install_pathis the path of your INTREPID installation the project directory for the Cookbooks sample data is install_path sample_data cookbooks For example if INTREPID is installed in C Program Files Intrepid Intrepid4 5 then you can find the sample data at C Program Files Intrepid Intrepid4 5 sample_ data cookbooks For information about installing or reinstalling the sample data see Sample data for the INTREPID Cookbooks in Using INTREPID Cookbooks R19 For a description of INTREPID datasets see Introduction to the INTREPID database G20 For more detail see INTREPID database file and data structures R05 Steps to follow Start the INTREPID Line Filter tool Choose Load Line Dataset from the File menu Sample Mode Sample Hode Select Resampling Mode Geo Located Requires X Y Fields C Time Based Requires a Fiducial Field C Fixed Resample interval of Data Points Edit Survey Info OK Cancel Specify the following dataset and fields Data Specification Dataset marinel DIR Z Field Bouguer LINE Line Type Cancel
3. r Manual Gravity inversion C11 3 Library Help Top lt 4 Back gt INTREPID displays the original and filtered data profiles in the Line Filter window 1 Intrepid Line Filter v3 4 cut 61 Click Process Specify bouguer_depth as the output field INTREPID calculates the estimated depth to the simple Bouguer anomaly Library Help Top 2012 Intrepid Geophysics 4 Back gt
Download Pdf Manuals
Related Search