L04_GravAnalysisExamples-page1

L04_GravAnalysisExamples-page1 - Gravity Analysis and...

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Applied Geophysics – Analysis and examples Analysis and examples Reading: Today: p39-64 Next Lecture: p65-75 Gravity: Applied Geophysics – Analysis and examples Spreadsheet: Grav2Dcolumn Gravity Anomalies: 2D forward calculation for rectangular parallelepipeds with greater vertical extent than horizontal see Dobrin and Savit eq 12-34 Define density structure Adjust bold numbers… coulum center (km) density contrast (g/cm3) top (km) bottom (km) error check 0 0.5 0 0 OK 1 0.5 0 0 OK 2 0.5 7 9 OK 3 0.5 6 10 OK 4 0.5 5.5 9.5 OK
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