Changes

==Data quality==

==Data quality==

The main job for [[seismic interpretation]] is to map three things:

The main job for [[seismic interpretation]] is to map several things:

* Structure

* [[Structure]]

* Stratigraphy

* [[Stratigraphy]]

* Rock/fluid properties

* [[Rock properties|Rock]] and [[Petroleum reservoir fluid properties|fluid properties]]

In this order, each task requires increasing data quality. Quality is a nebulous term largely determined at acquisition time by correct survey design and execution. Processing generally has less impact on quality but is still very important.

In this order, each task requires increasing data quality. Quality is a nebulous term largely determined during acquisition by correct survey design and execution. (For more information about acquisition, please see [[Seismic data acquisition on land]] and [[Marine seismic data acquisition]].)  [[Basic seismic processing|Processing]] generally has less impact on quality but is still very important.

==Echo location==

==Echo location==