Airborne geophysical survey: Watford City 1° x 2° Quadrangle

Aeromagnetic and aeroradiometric data were collected along flight lines by
instruments in an aircraft that recorded magnetic-field and radiometric
values and locations. The magnetic data set presents latitude, longitude,
altitude, and magnetic-field values. Geologic symbols or codes are also
included. The geologic symbols were picked from surficial geologic maps.
The radiometric data set presents latitude, longitude, altitude, geologic
symbols or codes, apparent Uranium (Bismuth 214), Thorium (Thallium 208),
and Potassium (K 40), the element ratios, and ancillary information.

本数据集通过航空器搭载的仪器沿飞行测线采集航空磁测（aeromagnetic）与航空放射性测量（aeroradiometric）数据，记录了磁场值、放射性测量值及位置信息。磁测数据集包含纬度、经度、飞行高度、磁场强度值，同时附带地质符号或编码，其中地质符号取自地表地质图。放射性测量数据集则包含纬度、经度、飞行高度、地质符号或编码、视铀（铋214）、钍（铊208）、钾（K 40）、元素比值及辅助信息。