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;

M-4: 274;

Remarks:

The value of the deviation from the normal magnetic variation is stored in the VALLMA attribute.

Distinction: magnetic variation;