{"thcode":61,"term":{"code":736,"name":"geomagnetism","parent":734,"scope":"the study of the behavior and variation of Earth's magnetic field."},"uf":[],"bt":[{"code":734,"name":"geophysics","parent":639,"scope":"physics applied to the study of the Earth."},{"code":639,"name":"discipline","parent":1,"scope":null},{"code":1,"name":"Marine Realms Information Bank (MRIB) keyword categories","parent":null,"scope":null}],"nt":[{"code":737,"name":"paleomagnetism","parent":736,"scope":"the study of the Earth's magnetic field in the historical or geological past, as recorded in archeological or earth materials."}],"rt":[{"code":426,"name":"magnetic field observations","parent":400,"scope":"measurement of the Earth's magnetic field at a specific location; often used to detect magnetic anomalies that reflect the nature and distribution of subsurface earth materials."}]}