Object Class: Local magnetic anomaly
Acronym: LOCMAG (P,L,A)
Code: 78
Set Attribute_A: NOBJNM; OBJNAM; *VALLMA;
Set Attribute_B: INFORM; NINFOM; NTXTDS; SCAMAX; SCAMIN; TXTDSC;
Set Attribute_C: RECDAT; RECIND; SORDAT; SORIND;
Definition:
An anomaly of the magnetic field of the Earth, extending over a relatively small area, due to local magnetic influences. (IHO Dictionary, S-32, 5th Edition, 2874, 2984)
References:
INT 1: IB 82.1-2;
S-4: 274;
Remarks:
The value of the deviation from the normal magnetic variation is stored in the VALLMA attribute.
Distinction: magnetic variation;