Page 24 - Whole Earth Geophysics An Introductory Textbook For Geologists And Geophysicists

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Constraints
and
Methods
Interpretation:
a) a Saas B Model Inversion b) Data Refraction Seismic Observed Travel-Time Graph Seismograms t ; E, Equations ; lan ; Inversion c) Inversion on Based Interpretation d) of Direct 1Slope Vy" Surface Earth's Wave) g Wave) of Refracted 1/(Slope Vo h=1240m m/s 3870 = V3 & sin"'(V,/V;) = Angle Critical = 0, (Zhcosé ols T-Inte

1 NL
t ’ f
Heat flow technique. are (T,.T>, etc.) a various depths in temperature (T) (z), or geothermal gradient thermal of the function flux of heat the and flow, q). (heat observations. mathemati- of seis- mathematical We layers. into” “plug 1.7. Fig. subsurface of lay- tential polenha lose not in Earth to hammers In way. bang When great a observations, in con- more

1.5 Temperatures at drillhole. The change in depth a (k) surface the uses data; forward modeling result. inversion into of we illustrated in the densities as One should the of rock that be hammer; we Earth. the learn may The
FIGURE measured with (@T/dz), is conductivity through geophysical Inversion would that the from inserted thicknesses courses, when from résult. Thicknesses “computed”) profile and or del MOee! we data, properties use to got it about we other constraints.

Earth's Surface interpret observed?” observed observations results are and physics profile is assumed* Calculations ” (“calculated, adiusted ae Ge iiera geophysical certain often how analyze another type of rock itself. about much us observations, however, and evolution. Those are

to used we from that parameters velocities and gravity the ider of Geologists and tells us tell not data,
dT fez are what model calculates (model) seismic the math in observed an are would that predicted might Consimen Bes data. interpret to used observations Earth. the there what’s Earth the technique may other geophysical

caused
FLOW « Drillhole Ss methods “What subsurface a and model interpretation of model inversion of modeling densities profile the until we vations; observed are make We of nature see to respects, geopliysical techniques are just what to with subsurface geology other and

Introduction H E AT forward and we calculate to subsurface an shows refraction observations. Observed a yield using to results. yield forward different gravity the adjusted ob: Peet the of methods what objective: interpret the Earth, the listen and geophysical a combined is region’s geological
ask,

1 Thermometer inverse case each equations a 1.6 Fig. that accustomed to The with predict then are the Ce interpretation matter the of to open Earth Alone, technique a about of form
Chapter Methods Both In cal assumes mic equations are formulas Layers model ers tches PIENCDES Constraints No sight order crack many the on that deal the

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