Seismic 3D Survey Areas - for Petroleum Industry Exploration

The polygons depict the outline of 3D surveys. These outlines illustrate the survey outlines but are not consistently defined. The polygons have been extracted from survey reports but may illustrate surface coverage, full fold coverage or even the final grid definitions. Care should be exercised when using these polygons for anything other than an indication of survey extent.

本数据集的多边形图形表征三维勘探（3D surveys）的范围轮廓。此类图形虽展示了勘探范围轮廓，但并未形成统一的定义标准。该类多边形源自勘探报告，但其所表征的对象可能为地表覆盖范围、全褶皱覆盖范围，甚至是最终网格的定义范围。除用于指示勘探范围外，若将此类多边形用于其他用途，请务必谨慎操作。