def advance_in_time(self):
""" Update avulsion model one time step. """
### future work: SLRR can be a vector to change rates ###
# determine if there is an avulsion & find new path if so
### need to change this to look for shoreline after coupling ###
### (instead of looking for sea level)
(self._riv_i, self._riv_j), self._avulsion_type, self._loc = avulse.find_avulsion(
self._riv_i, self._riv_j, self._n,
self._super_ratio, self._SL, self._ch_depth,
self._short_path, self._splay_type, self._splay_dep, dx=self._dx,
dy=self._dy)
if self._saveavulsions & self._avulsion_type > 0:
new_info = (self._avulsion_type, self._time / _SECONDS_PER_YEAR, self._loc)
self._avulsion_info = np.vstack([self._avulsion_info, new_info])
#assert(self._riv_i[-1] != 0)
# save timestep and avulsion location if there was one
#if len(loc) != 0:
# self._avulsions = self._avulsions + [(self._time/_SECONDS_PER_DAY),
# loc[-1], avulsion_type, length_old,
# length_new_sum, self._SL)]
# raise first two rows by inlet rise rate (subsidence)
self._n[:2, :] += self._IRR
# change elevations according to sea level rise (SLRR)
### needs to be changed to subtracting elevation once coupled ###
SLR.elev_change(self._SL, self._n, self._riv_i,
self._riv_j, self._ch_depth)
# smooth river course elevations using linear diffusion equation
diffuse.smooth_rc(self._dx, self._dy, self._nu, self._dt,
self._riv_i, self._riv_j, self._n)
# Floodplain sedimentation
FP.dep_blanket(self._SL, self._blanket_rate, self._n,
self._riv_i, self._riv_j, self._ch_depth)
# Wetland sedimentation
### no wetlands in first version of coupling to CEM ###
FP.wetlands(self._SL, self._WL_Z, self._WL_dist * self._dy,
self._n, self._riv_i, self._riv_j, self._x, self._y)
# calculate sediment flux
self._sed_flux = flux.calc_qs(self._nu, self._riv_i,
self._riv_j, self._n,
self._dx, self._dy, self._dt)
self._profile = self._n[self._riv_i, self._riv_j]
# Update sea level
self._SL += self._SLRR
self._time += self._dt
def advance_in_time(self):
""" Update avulsion model one time step. """
# if (self._time / _SECONDS_PER_YEAR) > 2000:
# self._SLRR = 0.01 / _SECONDS_PER_YEAR * self._dt
self._riv_i, self._riv_j, self._course_update = steep_desc.update_course(
self._n, self._riv_i, self._riv_j, self._ch_depth, self._slope,
sea_level=self._SL, dx=self._dx, dy=self._dy)
self._n = avulsion_utils.fix_elevations(self._n, self._riv_i, self._riv_j,
self._ch_depth, self._SL, self._slope, self._dx, self._max_rand, self._SLRR)
""" Save every time the course changes? """
if self._saveupdates and self._course_update > 0:
with open('output_data/river_info.out','a') as file:
file.write("%.5f %i \n" % ((self._time / _SECONDS_PER_YEAR),
self._course_update))
""" determine if there is an avulsion & find new path if so """
(self._riv_i, self._riv_j), self._avulsion_type, self._loc, self._avulse_length, \
self._path_diff, self._splay_deposit = avulse.find_avulsion(self._riv_i,
self._riv_j, self._n, self._super_ratio, self._SL, self._ch_depth,
self._short_path, self._splay_type, self._slope,
self._splay_deposit, self._nu, self._dt, dx=self._dx, dy=self._dy)
""" Save avulsion record. """
if self._saveavulsions and self._avulsion_type > 0:
with open('output_data/river_info.out','a') as file:
file.write("%.5f %i %i %.5f %.5f\n" % ((self._time / _SECONDS_PER_YEAR),
self._avulsion_type, self._loc, self._avulse_length, self._path_diff))
""" Save crevasse splay deposits. """
if self._saveavulsions and (self._splay_deposit.sum() > 0):
np.savetxt('output_data/splay_deposit.out', self._splay_deposit, '%.8f')
# need to fill old river channels if coupled to CEM
if (self._avulsion_type == 1) or (self._avulsion_type == 2):
self._n = avulsion_utils.fix_elevations(self._n, self._riv_i, self._riv_j,
self._ch_depth, self._SL, self._slope, self._dx, self._max_rand, self._SLRR)
#assert(self._riv_i[-1] != 0)
""" change elevations according to sea level rise (SLRR)
(if not coupled -- this occurs in coupling script otherwise) """
# SLR.elev_change(self._SL, self._n, self._riv_i,
# self._riv_j, self._ch_depth, self._SLRR)
""" smooth river course elevations using linear diffusion equation """
self._dn_rc = diffuse.smooth_rc(self._dx, self._dy, self._nu, self._dt, self._ch_depth,
self._riv_i, self._riv_j, self._n, self._SL, self._slope)
""" Floodplain sedimentation (use one or the other) """
#-------------------------------------------------------
### Deposit blanket across entire subaerial domain: ###
# FP.dep_blanket(self._SL, self._blanket_rate, self._n,
# self._riv_i, self._riv_j, self._ch_depth)
### Deposit fines adjacent to river channel: ###
FP.dep_fines(self._n, self._riv_i, self._riv_j, self._dn_rc, self._frac_fines,
self._SL)
#-------------------------------------------------------
""" Wetland sedimentation """
### no wetlands in first version of coupling to CEM ###
# FP.wetlands(self._SL, self._WL_Z, self._WL_dist * self._dy,
# self._n, self._riv_i, self._riv_j, self._x, self._y)
""" Subsidence """
subside.linear_subsidence(self._n, self._riv_i, self._riv_j, self._ch_depth,
self._SubRate, self._SubStart, self._SL)
""" calculate sediment flux at the river mouth """
self._sed_flux = flux.calc_qs(self._nu, self._riv_i, self._riv_j,
self._n, self._SL, self._ch_depth,
self._dx, self._dy, self._dt, self._slope)
self._profile = self._n[self._riv_i, self._riv_j]
# Update time
self._time += self._dt
# update sea level
self._SL += self._SLRR
# begin time loop and main program
for k in range(kmax):
# determine sea level (or subsidence)
SL = SL + [k * SLRR]
current_SL = SL[-1]
# # raise river inlet row by inlet rise rate (subsidence)
# for j in range(jmax):
# n[0][j] = n0 + (IRR)
# determine if there is an avulsion & find new path if so
riv_x, riv_y, loc, SEL, SER, n, dn_fp, avulsion_type, length_new_sum, \
length_old = avulse.find_avulsion(dx, dy, imax, jmax, riv_x, riv_y,
n, super_ratio, current_SL, ch_depth, short_path,
dn_fp, splay_type, splay_dep)
# save timestep and avulsion location if there was one
if len(loc) != 0:
avulsions = avulsions + [(k*dt/86400, loc[-1], avulsion_type,
length_old, length_new_sum, current_SL)]
# raise first two rows by inlet rise rate (subsidence)
n[0][:] = n[0][:] + (IRR)
n[1][:] = n[1][:] + (IRR)
# change elevations according to sea level rise (SLRR)
n, rc_flag = SLR.elev_change(imax, jmax, current_SL, n, riv_x, riv_y,
ch_depth, dx, dy)