Changes

==Effect of density==

==Effect of density==

[[file:applying-gravity-in-petroleum-exploration_fig15-4.png|left|thumb|{{figure number|1}}]]

[[file:applying-gravity-in-petroleum-exploration_fig15-4.png|300px|thumb|{{figure number|1}}Different gravity responses to a body with different positive density contrasts.]]

The amplitude of a gravity anomaly has a linear relationship to density. Positive density contrasts produce gravity highs; negative density contrasts produce gravity lows. The wavelength of the anomaly is unaffected by differences in the density. [[:file:applying-gravity-in-petroleum-exploration_fig15-4.png|Figure 1]] shows the different gravity responses to a body with different positive density contrasts. In the upper half of the diagram are the gravity responses. The lower half of the diagram is a cross section. Values for the different densities are written next to the gravity response in the upper part of the figure.

The amplitude of a gravity anomaly has a linear relationship to density. Positive density contrasts produce gravity highs; negative density contrasts produce gravity lows. The wavelength of the anomaly is unaffected by differences in the density. [[:file:applying-gravity-in-petroleum-exploration_fig15-4.png|Figure 1]] shows the different gravity responses to a body with different positive density contrasts. In the upper half of the diagram are the gravity responses. The lower half of the diagram is a cross section. Values for the different densities are written next to the gravity response in the upper part of the figure.

[[file:applying-gravity-in-petroleum-exploration_fig15-5.png|thumb|{{figure number|2}}]]

[[file:applying-gravity-in-petroleum-exploration_fig15-5.png|300px|thumb|{{figure number|2}}]]

[[file:applying-gravity-in-petroleum-exploration_fig15-6.png|left|thumb|{{figure number|3}}]]

[[file:applying-gravity-in-petroleum-exploration_fig15-6.png|300px||thumb|{{figure number|3}}]]

==Effect of depth==

==Effect of depth==