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勾勒了三维勘探（3D survey）的轮廓范围。此类轮廓仅用于示意勘探边界，但未做统一规范的定义。此类多边形源自勘探报告，但其表征的对象可能为地表覆盖（surface coverage）范围、全褶皱覆盖（full fold coverage）范围，甚至是最终网格定义（grid definition）。若将此类多边形用于勘探范围示意以外的其他用途，请务必谨慎行事。