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.

本数据集中的多边形图形描绘了三维勘探（3D surveys）的轮廓范围。此类轮廓仅用于示意勘探作业的边界范围，并未形成统一的定义标准。上述多边形系从勘探报告中提取而来，但其所表征的内容可能为地表覆盖区、满覆盖次数覆盖区，甚至是最终的网格布设方案。若将此类多边形用于勘探范围示意以外的其他用途，需谨慎行事。