European Space Agency

Royal Belgian Institute for Aeronomy

uc130 - magnetic field line segments

type  uc130

Synopsis

INCLUDE 'unilib.h'

COMMON /UC130/ nbrsg, kursg, mseg

INTEGER*4   nbrsg, kursg
TYPE(zseg)  mseg(nx130)

Arguments

nbrsg

Number of elementary segments already computed

kursg

Indice of the current elementary segment

mseg

Set of elementary field line segments (zseg)

Description

The common block uc130 is part of a set of three common blocks:

• uc110, magnetic drift shell description;

• uc120, magnetic field line description;

• uc130, set of magnetic field line segments.

This set of common blocks is used to store a magnetic drift shell which is defined by a set of magnetic field line segments. The common block uc130 includes the whole set of elementary segments of the magnetic drift shell: each magnetic field line segment is described by a set of elementary segments.

As sample, the first magnetic field segment of the drift shell is stored in the argument mseg from index mfl(k1st)%ind%jbeg to mfl(k1st)%ind%jend. The geographic position of the southern mirror point of this field line segment is stored in mseg(mfl(k1st)%ind%jmirps)%beg%coord. Note that the common block uc170 has a similar structure (argument mele).

Dependencies

Used by

• ud315 - search the mirror point with the lowest altitude

  mseg

• ud319 - transfer a field line segment from common block uc170 to uc130

  nbrsg

• ud320 - evaluate a double time integral over a drift shell

  mseg

• ut985 - transfer a field line of the drift shell to IDL

  mseg

• ut992 - print the magnetic drift shell

  mseg

• ut993 - Store a magnetic field drift shell

  mseg

Modified by

• ud319 - transfer a field line segment from common block uc170 to uc130

  nbrsg, kursg and mseg

• ut990 - initialize the UNILIB library

  nbrsg and kursg

See also

• uc110 - magnetic drift shell

• uc120 - magnetic field line

• uc170 - temporary magnetic field line

Examples

None

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UNILIB/tags/v3.03