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要素描绘了三维勘探（3D surveys）的轮廓范围。此类多边形轮廓虽可体现勘探作业的边界范围，但未采用统一规范进行定义。此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，乃至最终的勘探网格定义。若将此类多边形用于表征勘探范围边界以外的其他用途，需谨慎操作。