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.

本数据集所采用的多边形用于表征三维勘探的轮廓。此类轮廓仅用于示意勘探范围，但未做统一规范定义。该类多边形源自勘探报告，但其所表征的内容可能为地表覆盖范围、满覆盖次数范围，甚至是最终测网的布设方案。除用于示意勘探作业范围外，若将此类多边形用于其他用途，需谨慎操作。