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.

本数据集包含的多边形用于表征三维勘探（3D surveys）的轮廓范围。此类轮廓仅用于示意勘探范围，并未采用统一规范进行定义。此类多边形均源自勘探报告，但它们所表征的对象可能为地表覆盖范围、全褶皱覆盖范围，乃至最终的网格定义。因此，除用于示意勘探范围外，将此类多边形用于其他用途时需谨慎。