# Upward continuation

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Method used in oil exploration and geophysics

**Upward continuation** is a method used in [oil exploration](/source/Oil_exploration) and [geophysics](/source/Geophysics) to estimate the values of a [gravitational](/source/Gravitational_field) or [magnetic field](/source/Magnetic_field) by using measurements at a lower elevation and extrapolating upward, assuming [continuity](/source/Continuous_function). This technique is commonly used to merge different measurements to a common level so as to reduce scatter and allow for easier analysis.

## See also

- [Petroleum geology](/source/Petroleum_geology)

## References

- [Upward Continuation in Schlumberger's Oilfield Glossary](https://glossary.slb.com/en/terms/u/upward_continuation)

- [Downward Continuation in Schlumberger's Oilfield Glossary](https://glossary.slb.com/en/terms/d/downward_continuation)

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