Airborne geophysical survey: Lund 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.

本数据集包含航空磁测（Aeromagnetic）与航空放射性测量（Aeroradiometric）数据，两类数据均由搭载于航空器的测量仪器沿飞行测线采集，同步记录了磁场强度、放射性参数及采集点位坐标。
磁测数据集包含纬度、经度、海拔高度及磁场强度数据，同时附带地质符号或编码信息，该类地质符号均取自地表地质图。
放射性测量数据集包含纬度、经度、海拔高度、地质符号或编码、视铀（以铋214表征）、视钍（以铊208表征）、钾（钾40）含量、元素比值及辅助信息。