from issm.fielddisplay import fielddisplay
from issm.checkfield import checkfield
from issm.WriteData import WriteData
[docs]class calvinglevermann(object):
"""
CALVINGLEVERMANN class definition
Usage:
calvinglevermann=calvinglevermann();
"""
def __init__(self): # {{{
self.coeff = float('NaN')
self.meltingrate = float('NaN')
#set defaults
self.setdefaultparameters()
#}}}
def __repr__(self): # {{{
string=' Calving Levermann parameters:'
string="%s\n%s"%(string,fielddisplay(self,'coeff','proportionality coefficient in Levermann model'))
string="%s\n%s"%(string,fielddisplay(self,'meltingrate','melting rate at given location [m/a]'))
return string
#}}}
[docs] def extrude(self,md): # {{{
self.coeff=project3d(md,'vector',self.coeff,'type','node')
self.meltingrate=project3d(md,'vector',self.meltingrate,'type','node')
return self
#}}}
[docs] def setdefaultparameters(self): # {{{
#Proportionality coefficient in Levermann model
self.coeff=2e13;
#}}}
[docs] def checkconsistency(self,md,solution,analyses): # {{{
#Early return
if (solution!='TransientSolution') or (not md.transient.ismovingfront):
return md
md = checkfield(md,'fieldname','calving.coeff','size',[md.mesh.numberofvertices],'>',0)
md = checkfield(md,'fieldname','calving.meltingrate','NaN',1,'Inf',1,'size',[md.mesh.numberofvertices],'>=',0)
return md
# }}}
[docs] def marshall(self,prefix,md,fid): # {{{
yts=md.constants.yts
WriteData(fid,prefix,'name','md.calving.law','data',3,'format','Integer');
WriteData(fid,prefix,'object',self,'fieldname','coeff','format','DoubleMat','mattype',1)
WriteData(fid,prefix,'object',self,'fieldname','meltingrate','format','DoubleMat','mattype',1,'timeserieslength',md.mesh.numberofvertices+1,'yts',md.constants.yts,'scale',1./yts)
# }}}