Airborne geophysical survey: Big Delta-Fairbanks

Aeromagnetic data were collected along flight lines by instruments in an aircraft that recorded magnetic-field intensity values and location. In surveys such as this one where the data were originally collected in digital form and not digitized from contour maps, the information we provide typically includes latitude, longitude, magnetic anomaly in nanoTeslas, and intermediate values used to derive the magnetic anomaly such as total magnetic field.

航空磁测数据由机载仪器沿飞行航线采集，同步记录磁场强度值与位置坐标。在诸如本项调查这类的勘测项目中，数据最初以数字形式直接采集，而非通过等值线图数字化得到；本次提供的数据集通常包含纬度、经度、以纳特斯拉（nanoTesla）为单位的磁异常值，以及用于推导磁异常的中间参数（例如总磁场强度）。