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geogeo.py
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geogeo.py
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from geofunc import *
class Coord:
"""
Coord is a lon, lat pair.
"""
def __init__(self,lon,lat):
self.lon=float(lon)
self.lat=float(lat)
class RCoord:
"""
RCoord is an x,y pair.
"""
def __init__(self,x,y):
self.x=float(x)
self.y=float(y)
class Box:
"""
Box is a range of x, y and z,
suitable for the bounding box of a finite element problem as in GeoFEST
"""
def __init__(self,xmin, ymin, zmin, xmax, ymax, zmax):
self.xmin=float(xmin)
self.ymin=float(ymin)
self.zmin=float(zmin)
self.xmax=float(xmax)
self.ymax=float(ymax)
self.zmax=float(zmax)
class Segment:
"""
Segment is a line segment
defined similar to a Fault
"""
def __init__(self, x0, y0, depth, strike, dip, length, name):
self.x0=float(x0)
self.y0=float(y0)
self.depth=float(depth)
self.strike=float(strike)
self.dip=float(dip)
self.length=float(length)
self.z0 = -float(depth)
self.name = name
class Layer:
"""
Layer is a range of z and properties,
which together with Box is suitable for a geological layer
of a finite element problem as in GeoFEST
"""
def __init__(self, zmin, zmax, rho,mu,lam, visc, exp, name):
self.zmin=float(zmin)
self.zmax=float(zmax)
self.rho=float(rho)
self.mu=float(mu)
self.lam=float(lam)
self.visc=float(visc)
self.exp=float(exp)
self.name = name
def write_lyr(self,fn,box):
fp=open(fn, "w")
fp.write("8\n")
fp.write("%e %e %e\n"%(box.xmin,box.ymin,self.zmax))
fp.write("%e %e %e\n"%(box.xmax,box.ymin,self.zmax))
fp.write("%e %e %e\n"%(box.xmax,box.ymax,self.zmax))
fp.write("%e %e %e\n"%(box.xmin,box.ymax,self.zmax))
fp.write("%e %e %e\n"%(box.xmin,box.ymin,self.zmin))
fp.write("%e %e %e\n"%(box.xmax,box.ymin,self.zmin))
fp.write("%e %e %e\n"%(box.xmax,box.ymax,self.zmin))
fp.write("%e %e %e\n"%(box.xmin,box.ymax,self.zmin))
fp.write("6\n")
fp.write("0 1\n 4 1 2 3 4\n")
fp.write("0 1\n 4 1 2 6 5\n")
fp.write("0 1\n 4 2 3 7 6\n")
fp.write("0 1\n 4 3 4 8 7\n")
fp.write("0 1\n 4 4 1 5 8\n")
fp.write("0 1\n 4 5 6 7 8\n")
fp.close()
class Fault:
"""
Fault is a rectangular fault plane using the Okada conventions:
the origin is at x0, y0, -depth;
the strike is the compass bearing along which the fault extends "length"
the dip is degrees upward from horizontal, the fault extends "width"
the slip is not specified at present (might be in a "Slip()" object?)
"""
def __init__(self, x0=0, y0=0, depth=1, strike=0, dip=90, length=0,
width=0,name='default',strike_slip = 0.,
dip_slip = 0,tensile_slip = 0, first=0):
self.x0=float(x0)
self.y0=float(y0)
self.depth=float(depth)
self.strike=float(strike)
self.dip=float(dip)
self.length=float(length)
self.width=float(width)
self.strike_slip = float(strike_slip)
self.dip_slip = float(dip_slip)
self.tensile_slip = float(tensile_slip)
params = [self.x0,self.y0,
self.strike,self.dip,self.depth,
self.width,self.length,
self.strike_slip,self.dip_slip,self.tensile_slip]
self.z0 = -float(depth)
self.name = name
self.first = float(first)
l = self.length
self.svec = [l*sino(self.strike),
l*coso(self.strike),
0.0]
w = self.width
self.dvec = [-w*coso(self.strike)*coso(self.dip),
w*sino(self.strike)*coso(self.dip),
w*sino(self.dip)]
sstr = ""
print (params)
for index,item in zip(range(1,11),params):
print( 'dbgFault item %d %f'%(index,item) )
# make first 9
line = "%d 1 %f\n"%(index,item)
# override tensile slip: default is to fix at zero
if index == 10:
line = "%d 0 0.0\n"%(index,)
sstr = sstr + line
self.simplex_string = sstr
def print_vec(self):
print( 'svec %f, %f, %f'%(self.svec[0],self.svec[1],self.svec[2]))
print( 'dvec %f, %f, %f'%(self.dvec[0],self.dvec[1],self.dvec[2]))
def print_flt(self):
print( "Fault %s first: %f"%(self.name,self.first))
print( "Fault %s z0: %f\n"%(self.name,self.z0))
print( "Fault %s x0: %f"%(self.name,self.x0))
print( "Fault %s y0: %f"%(self.name,self.y0))
print( "Fault %s strike: %f"%(self.name,self.strike))
print( "Fault %s dip: %f"%(self.name,self.dip))
print( "Fault %s depth: %f"%(self.name,self.depth))
print( "Fault %s width: %f"%(self.name,self.width))
print( "Fault %s length: %f"%(self.name,self.length))
def fread_simplex_flt(self,fname):
"""
Bogus, does nothing
"""
print ("Hello, world!\n")
def read_simplex_flt(self,fname):
fp=open(fname,"r")
line = fp.readline()
n,x,y,strike,dip,depth,width,length,ss,ds,ts = line.split()
self.x0=float(x)
self.y0=float(y)
self.depth=float(depth)
self.strike=float(strike)
self.dip=float(dip)
self.length=float(length)
self.width=float(width)
self.strike_slip = float(ss)
self.dip_slip = float(ds)
self.tensile_slip = float(ts)
params = [self.x0,self.y0,
self.strike,self.dip,self.depth,
self.width,self.length,
self.strike_slip,self.dip_slip,self.tensile_slip]
self.z0 = -float(depth)
l = self.length
self.svec = [l*sino(self.strike),
l*coso(self.strike),
0.0]
w = self.width
self.dvec = [-w*coso(self.strike)*coso(self.dip),
w*sino(self.strike)*coso(self.dip),
w*sino(self.dip)]
sstr = ""
print (params)
for index,item in zip(range(1,11),params):
print ('dbgFaultRFM item %d %f'%(index,item))
line = "%d 1 %f\n"%(index,item)
if index == 10:
line = "%d 0 0.0\n"%(index,)
sstr = sstr + line
self.simplex_string = sstr
def read_flt(self,fname):
fp=open(fname,"r")
if fp==None: print ("no file named " +fname); exit(1)
line=fp.readline()
if(line != '4 \n' and line != '4\n'):
print ("this doesn't look like a fault file!: "+line)
exit(1)
line=fp.readline()
co = line.split()
if len(co) != 3:
print ("trouble!"+line)
exit(1)
self.x0 = float(co[0])
self.y0 = float(co[1])
self.z0 = float(co[2])
self.depth = -self.z0
line = fp.readline()
co = line.split()
if len(co) != 3:
print ("trouble!"+line)
exit(1)
svec = [float(co[0])-self.x0,float(co[1])-self.y0,float(co[2])-self.z0]
self.svec = svec
self.strike = atan2o(svec[0],svec[1])
self.length = math.sqrt(svec[0]*svec[0] + svec[1]*svec[1])
fp.readline() # don't really need third line
line = fp.readline()
co = line.split()
if len(co) != 3:
print ("trouble!"+line)
exit(1)
dvec = [float(co[0])-self.x0,float(co[1])-self.y0,float(co[2])-self.z0]
self.dvec = dvec
drho = math.sqrt(dvec[0]*dvec[0]+dvec[1]*dvec[1])
self.dip = atan2o(dvec[2],drho)
self.width = math.sqrt(drho*drho+dvec[2]*dvec[2])
fp.close()
def write_params(self,fname):
fp=open(fname,'w')
fp.write( "number dip(o) strike(o) slip(m) rake(o) length(km) width(km) depth(km) origX origY 1st repeat\n")
fp.write ("%f %f %f %f %f %f %f %f %f %f %f %f\n" % (1,
self.dip,self.strike,1.0, 180,self.length, self.width,
self.depth, self.x0, self.y0, self.first, 5000.))
fp.close()
def write_flt(self,fname):
fp=open(fname,"w")
if fp==None: print ("cannot open file " +fname); exit(1)
fp.write('4 \n')
p0=[self.x0,self.y0,self.z0]
l = self.length
svec = [l*sino(self.strike),
l*coso(self.strike),
0.0]
p1=[self.x0+svec[0],self.y0+svec[1],self.z0]
w = self.width
dvec = [-w*coso(self.strike)*coso(self.dip),
w*sino(self.strike)*coso(self.dip),
w*sino(self.dip)]
p3=[self.x0+dvec[0],self.y0+dvec[1],self.z0+dvec[2]]
p2=[p1[0]+dvec[0],p1[1]+dvec[1],p1[2]+dvec[2]]
#####Alter this to fix format problem: want 6 digits but also need
# rectangles to be rectangles (coplanar). Thus need p1-p0=p2-p3
# for x and y coords, after truncation.
# let's try making the needed correction and see if it's adequate.
c3x = p2[0]+p0[0]-p1[0]-p3[0]
c3y = p2[1]+p0[1]-p1[1]-p3[1]
print ("corrections: %e, %e\n"%(c3x,c3y))
# want new p3' such that p2+p0-p1-p3' = 0
# so if p3'=p3+c3 then above is p2+p0-p1-p3-c3
# is p2+p0-p1-p3-(p2+p0-p1-p3) - so that's certainly 0.
p3[0] += c3x
p3[1] += c3y
fp.write("%g %g %g\n"%(p0[0],p0[1],p0[2]))
fp.write("%g %g %g\n"%(p1[0],p1[1],p1[2]))
fp.write("%g %g %g\n"%(p2[0],p2[1],p2[2]))
fp.write("%g %g %g\n"%(p3[0],p3[1],p3[2]))
fp.close()
def check_flt(self,fname):
fp=open(fname,"r")
fp.readline()
p0=fp.readline().split()
p1=fp.readline().split()
p2=fp.readline().split()
p3=fp.readline().split()
c3x = float(p2[0])+float(p0[0])-float(p1[0])-float(p3[0])
c3y = float(p2[1])+float(p0[1])-float(p1[1])-float(p3[1])
print ("revised corrections: %e, %e\n"%(c3x,c3y))
fp.close()
class VCFault:
"""
VCFault is a collection of the named items in a VC fault file.
"""
def __init__(self, lower_depth_boundary=15, upper_depth_boundary=0,
long_west_endpoint=0, lat_west_endpoint=0,
long_east_endpoint=0, lat_east_endpoint=0,
slip_rate=0,fraction_coseismic=0, one_more_number=0,n1=0,n2=0,
length = 0,vertdepth = 0):
self.lower_depth_boundary=float(lower_depth_boundary)
self.upper_depth_boundary=float(upper_depth_boundary)
self.long_west_endpoint=float(long_west_endpoint)
self.lat_west_endpoint=float(lat_west_endpoint)
self.long_east_endpoint=float(long_east_endpoint)
self.lat_east_endpoint=float(lat_east_endpoint)
self.slip_rate=float(slip_rate)
self.fraction_coseismic=float(fraction_coseismic)
self.one_more_number=float(one_more_number)
self.n1 = n1
self.n2 = n2
dlong = self.long_east_endpoint - self.long_west_endpoint
dlat = self.lat_east_endpoint - self.lat_west_endpoint
reflat = 0.5*(self.lat_east_endpoint + self.lat_west_endpoint)
klat = 111.32
klong = 111.32*coso(reflat)
self.length = math.sqrt(dlong*dlong*klong*klong+dlat*dlat*klat*klat)
self.klat = klat
self.klong = klong
self.vertdepth = self.lower_depth_boundary-self.upper_depth_boundary
class LockedInfFault:
"""
LockedInfFault is a simple representation of an infinite-length
fault moving at constant rate below a fixed depth. Can be expanded
to use traditional fault definition flexibility; for now assume
fault is strike 90, passing thru origin.
"""
def __init__(self, upper_depth_boundary=15,
slip_rate=1):
self.upper_depth_boundary=float(upper_depth_boundary)
self.slip_rate=float(slip_rate)
def displ(self,x):
y=x[1]
u=(1./math.pi)*math.atan(y/self.upper_depth_boundary)
v=0.
return [u,v]
class QTFault:
"""
QTFault is a rectangular fault plane using the Okada conventions
and also including the qtset (QuakeTables) named entities
the origin is at x0, y0, -depth;
the strike is the compass bearing along which the fault extends "length"
the dip is degrees upward from horizontal, the fault extends "width"
the slip is not specified at present (might be in a "Slip()" object?)
"""
def __init__(self, FaultID=0,SegmentID=0,FaultName="", SegmentName="",
StrandName="",LatStart=0.0, LatEnd=0.0, LonStart=0.0, LonEnd=0.0,
Strike=0.0, Dip=0.0, DepthTop=0.0, DepthBottom=0.0, Width=0.0,
FaultBreak=[], Friction=0.0, RecurrenceInterval=0.0,Slip=0.0,
DipSlip=0.0, StrikeSlip=0.0, DipRate=0.0, StrikeRate=0.0, Geometry="",
Length=0.0, CharacteristicRate=0.0, Rake=0.0, Datum=""):
self.FaultID = FaultID
self.SegmentID = SegmentID
self.FaultName=FaultName
self.SegmentName=SegmentName
self.StrandName=StrandName
self.LatStart=float(LatStart)
self.LatEnd=float(LatEnd)
self.LonStart=float(LonStart)
self.LonEnd=float(LonEnd)
self.Strike=float(Strike)
self.Dip=float(Dip)
self.DepthTop=float(DepthTop)
self.DepthBottom=float(DepthBottom)
self.Width=float(Width)
self.FaultBreak=FaultBreak
self.Friction=float(Friction)
self.RecurrenceInterval=float(RecurrenceInterval)
self.Slip = float(Slip)
self.DipSlip = float(DipSlip)
self.StrikeSlip = float(StrikeSlip)
self.DipRate = float(DipRate)
self.StrikeRate=float(StrikeRate)
self.Geometry = Geometry
self.Length = float(Length)
self.CharacteristicRate = float(CharacteristicRate)
self.Rake = float(Rake)
self.Datum = Datum
def print_flt(self):
print( "QTFault %s LatStart: %f"%(self.FaultName,self.LatStart))
print( "QTFault %s LatEnd: %f"%(self.FaultName,self.LatEnd))
print( "QTFault %s LonStart: %f"%(self.FaultName,self.LonStart))
print( "QTFault %s LonEnd: %f"%(self.FaultName,self.LonEnd))
print( "QTFault %s Strike: %f"%(self.FaultName,self.Strike))
print( "QTFault %s Dip: %f"%(self.FaultName,self.Dip))
print( "QTFault %s DepthTop: %f"%(self.FaultName,self.DepthTop))
print( "QTFault %s DepthBottom: %f"%(self.FaultName,self.DepthBottom))
print( "QTFault %s Width: %f"%(self.FaultName,self.Width))
print( "QTFault %s Length: %f"%(self.FaultName,self.Length))