Airborne geophysical survey: Salton Sea 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.

本数据集涵盖航空磁测与航空放射性测量两类数据，均由航空器搭载的测量仪器沿飞行测线采集，仪器同步记录磁场强度、放射性参数及采集点位坐标。磁测数据集包含纬度、经度、海拔高度与磁场强度数据，同时附带地质符号或编码信息，前述地质符号提取自地表地质图件。放射性测量数据集则包含纬度、经度、海拔高度、地质符号或编码、视铀（以铋214表征）、钍（以铊208表征）与钾（钾40）含量、元素比值及辅助信息。