Airborne geophysical survey: Cloud Peak, Wyoming

Aeromagnetic data were collected along flight lines by instruments in an
aircraft that recorded magnetic-field values and locations. In the earlier
days of surveying, the only way to represent this data was to generate an
analog map with contour lines. This dataset is a representation of the
digitized contour lines either by following the lines or by choosing the
intersection of the contour and flight-line to create a value of the magnetic
field. The values presented are latitude, longitude, and map magnetic-field
values.

航空磁测数据由搭载于航空器的仪器沿飞行航线采集，同步记录磁场强度与位置信息。
在航空磁测的早期阶段，此类数据的唯一可视化方式为生成带等值线的模拟地图。
本数据集为数字化等值线的再现成果，可通过沿等值线追踪或选取等值线与飞行航线的交点来获取对应的磁场强度数值。
所提供的数值包括纬度、经度与航图磁场强度值。