{"thcode":2,"term":{"code":1741,"name":"magnetism","parent":1367,"scope":"Strength and orientation of the permanent magnetic field in a given sample of an earth material"},"uf":[],"bt":[{"code":1367,"name":"earth material properties","parent":287,"scope":"Physical characteristics of rocks and unconsolidated earth materials such as soils and sediments."},{"code":287,"name":"earth characteristics","parent":1174,"scope":"The measurable, definable properties and features of the earth."},{"code":1174,"name":"topics","parent":1,"scope":"Themes, subjects, and concerns for which USGS information resources are relevant."},{"code":1,"name":"Categories","parent":null,"scope":"Thematic terms for categorizing information resources.  This thesaurus is intended to support finding and understanding scientific information."}],"nt":[{"code":1742,"name":"magnetic susceptibility","parent":1741,"scope":"Degree to which a rock type or other earth material can acquire and retain the orientation and intensity of an applied magnetic field."},{"code":1676,"name":"remanent magnetism","parent":1741,"scope":"Magnetic characteristic of rocks and deposits reflective of the earth's magnetic field at the time of the deposit's formation."}],"rt":[]}