The SEDRIS Data Representation Model
APPENDIX A - Classes
GSM Location 3D

Class Name: GSM Location 3D

Superclass - <Location 3D>

Subclasses

This DRM class is concrete and has no subclasses.

Definition

An instance of this DRM class specifies a coordinate within the Geocentric Solar Magnetic (GSM) 3D Spatial Reference Frame (SRF).

See [I18026] for a complete definition.

Primary Page in DRM Diagram:

Secondary Pages in DRM Diagram:

This class appears on only one page of the DRM class diagram.

Example

  1. GSM provides a convenient spatial reference frame for representing
    1. magnetopause and shock boundary positions
    2. magnetosheath and magnetotail fields
    3. magnetosheath solar wind velocities (since the orientation of the magnetic dipole axis alters the otherwise cylindrical symmetry of the solar wind flow).

FAQs

What kind of data is ordinarily represented in GSM?

GSM is quasi-inertial in that it rocks about the solar direction on both yearly (23.4 degrees +- 11.2 degrees) and 24 hour (+- 11.2 degree) cycles.

Constraints

Component of (two-way)(inherited)

Inherited Field Elements

This class has no inherited field elements.

Field Elements

SRM_GSM_Coordinate_3D coordinate;
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Last updated: May 15, 2003 Copyright © 2003 SEDRIS™