Getdiff - Revision history

RosDeath: /* function getdiff */

2007-11-09T14:50:10Z

function getdiff

RosDeath: /* function getdiff */

2007-11-09T14:49:49Z

function getdiff

RosDeath at 18:02, 6 November 2007

2007-11-06T18:02:58Z

RosDeath at 18:02, 6 November 2007

2007-11-06T18:02:23Z

RosDeath at 18:01, 6 November 2007

2007-11-06T18:01:38Z

RosDeath: /* function getdiff */

2007-11-06T18:00:27Z

function getdiff

RosDeath: /* function getdiff */

2007-11-06T17:58:38Z

function getdiff

RosDeath at 17:53, 6 November 2007

2007-11-06T17:53:05Z

RosDeath at 17:52, 6 November 2007

2007-11-06T17:52:07Z

RosDeath at 17:50, 6 November 2007

2007-11-06T17:50:27Z

New page

== function getdiff ==

This function returns the diffusivity of ice flow for a point along the glacier. This is determined from
<math>D^'= -\frac{2fA}{n+2} \left({\rho\,g}\right)^n <\math>

where standard symbols are defined in Table 1. The diffusivity is scaled and is determined on a staggered grid that has points positioned halfway between adjacent thickness grid points. The function is called for each staggered grid point in turn; this means that it is the responsibility of the calling routine to deal with branching in the system.
This function is called from calcthck and the returned information is held in array diffus.

← Older revision		Revision as of 14:50, 9 November 2007
Line 5:		Line 5:

	where standard symbols are defined in the [[definition]] page. The diffusivity is scaled and is determined on a staggered grid that has points positioned halfway between adjacent thickness grid points. The function is called for each staggered grid point in turn; this means that it is the responsibility of the calling routine to deal with branching in the system.		where standard symbols are defined in the [[definition]] page. The diffusivity is scaled and is determined on a staggered grid that has points positioned halfway between adjacent thickness grid points. The function is called for each staggered grid point in turn; this means that it is the responsibility of the calling routine to deal with branching in the system.
−	This function is called from calcthck, which is described in the section [[Model ~~Dynamics~~]] and the returned information is held in array '''diffus'''.	+	This function is called from calcthck, which is described in the section [[Model dynamics]] and the returned information is held in array '''diffus'''.

← Older revision		Revision as of 14:49, 9 November 2007
Line 5:		Line 5:

	where standard symbols are defined in the [[definition]] page. The diffusivity is scaled and is determined on a staggered grid that has points positioned halfway between adjacent thickness grid points. The function is called for each staggered grid point in turn; this means that it is the responsibility of the calling routine to deal with branching in the system.		where standard symbols are defined in the [[definition]] page. The diffusivity is scaled and is determined on a staggered grid that has points positioned halfway between adjacent thickness grid points. The function is called for each staggered grid point in turn; this means that it is the responsibility of the calling routine to deal with branching in the system.
−	This function is called from calcthck, which is described in the section [[Model ~~Structure~~]] and the returned information is held in array '''diffus'''.	+	This function is called from calcthck, which is described in the section [[Model Dynamics]] and the returned information is held in array '''diffus'''.

← Older revision		Revision as of 18:02, 6 November 2007
Line 5:		Line 5:

	where standard symbols are defined in the [[definition]] page. The diffusivity is scaled and is determined on a staggered grid that has points positioned halfway between adjacent thickness grid points. The function is called for each staggered grid point in turn; this means that it is the responsibility of the calling routine to deal with branching in the system.		where standard symbols are defined in the [[definition]] page. The diffusivity is scaled and is determined on a staggered grid that has points positioned halfway between adjacent thickness grid points. The function is called for each staggered grid point in turn; this means that it is the responsibility of the calling routine to deal with branching in the system.
−	This function is called from calcthck, which is described in the section [[~~model~~ Structure]] and the returned information is held in array '''diffus'''.	+	This function is called from calcthck, which is described in the section [[Model Structure]] and the returned information is held in array '''diffus'''.

← Older revision		Revision as of 18:02, 6 November 2007
Line 5:		Line 5:

	where standard symbols are defined in the [[definition]] page. The diffusivity is scaled and is determined on a staggered grid that has points positioned halfway between adjacent thickness grid points. The function is called for each staggered grid point in turn; this means that it is the responsibility of the calling routine to deal with branching in the system.		where standard symbols are defined in the [[definition]] page. The diffusivity is scaled and is determined on a staggered grid that has points positioned halfway between adjacent thickness grid points. The function is called for each staggered grid point in turn; this means that it is the responsibility of the calling routine to deal with branching in the system.
−	This function is called from calcthck, which is described in the section [[model ~~structure~~]] and the returned information is held in array '''diffus'''.	+	This function is called from calcthck, which is described in the section [[model Structure]] and the returned information is held in array '''diffus'''.

@@ Line 4: / Line 4: @@
 <math>D^{'}= -\frac{2fA}{n+2} \left({\rho\,g}\right)^{n} \left({H^{'}}\right)^{n+2}\left|{\frac{\delta\,s^{'}}{\delta\,x^{'}}}\right|^{n-1}</math>
-where standard symbols are defined in the [[definition]] page.  The diffusivity is scaled and is determined on a staggered grid that has points positioned halfway between adjacent thickness grid points.  The function is called for each staggered grid point in turn; this means that it is the responsibility of the calling routine to deal with branching in the system.
+where standard symbols are defined in the [[definition]] page.  The diffusivity is scaled and is determined on a staggered grid that has points positioned halfway between adjacent thickness grid points. The function is called for each staggered grid point in turn; this means that it is the responsibility of the calling routine to deal with branching in the system.
-This function is called from calcthck and the returned information is held in array '''diffus'''.
+This function is called from calcthck, which is described in the section [[model structure]] and the returned information is held in array '''diffus'''.

@@ Line 1: / Line 1: @@
 == function getdiff ==
-This function returns the diffusivity of ice flow for a point along the glacier.  This is determined from
+This function returns the diffusivity of ice flow for a point along the glacier.  This is determined from<br>
-<math>D^{'}= -\frac{2fA}{n+2} \left({\rho\,g}\right)^{n} </math>
+<math>D^{'}= -\frac{2fA}{n+2} \left({\rho\,g}\right)^{n} \left({H^{'}}\right)^{n+2}\left|{\frac{\delta\,s^{'}}{\delta\,x^{'}}}\right|^{n-1}</math>
 where standard symbols are defined in Table 1.  The diffusivity is scaled and is determined on a staggered grid that has points positioned halfway between adjacent thickness grid points.  The function is called for each staggered grid point in turn; this means that it is the responsibility of the calling routine to deal with branching in the system.
 This function is called from calcthck and the returned information is held in array diffus.