Australian National Airborne electromagnetic (AEM) Data Collection

Airborne electromagnetic (AEM) data measure variations in the conductivity of the ground by transmitting an electromagnetic signal from a system attached to a plane or helicopter. Depending on the AEM system used and the sub-surface conditions, AEM techniques can detect variations in the conductivity of the ground to a depth of several hundred metres. The responses recorded are commonly caused by the presence of electrically conductive materials such as salt or saline water, graphite, clays and sulphide minerals.

Value: Data used for interpreting the geologic structure of the subsurface. This work can be used for the assessment of resource potential.

Scope: Systematic coverage of large portions of the Australian continent.

航空电磁（Airborne Electromagnetic, AEM）数据通过搭载于固定翼飞机或直升机的探测系统发射电磁信号，以此测量地下介质的电导率变化。根据所选用的航空电磁系统类型与地下地质条件，该技术可探测数百米深度范围内的地下电导率变化。所记录的电磁响应通常源于导电物质的赋存，常见的导电物质包括盐类或咸水、石墨、黏土以及硫化矿物。
数据价值：此类数据可用于解析地下地质构造，相关研究可应用于资源潜力评估。
数据覆盖范围：系统性覆盖澳大利亚大陆的大片区域。