setmin = False
min_Mw = -999.0
else:
# Basic characteristics of seismicity catalog
m0total = 1.0e17
max_m0 = math.pow(10.0, 19.5)
minM = -1.0
min_m0 = gr.calc_m0(minM)
slope = 1.0
root = 'random'
# Define the Gutenberg-Richter relationship values
gr_obj = gr.GutenbergRichter(b=slope,
m0total=m0total,
max_m0=max_m0,
min_m0=min_m0)
gr_obj.calc_a()
# Make a plot of the chosen G-R relationship
maxM = gr.calc_Mw(max_m0)
Msamp = 0.25
Mws = np.arange(minM, maxM + Msamp, Msamp)
Ns = gr_obj.get_N(Mws)
# Calculate probability of a given event per second
Nsec = Ns / secyear
# Generate catalog
catlength = 2.0 * secday
gr_obj.generate_catalog(catlength)
max_m0 = math.pow(10.0, 19.5) # Assuming a fixed corner, will calculate m0total
bvals = np.array([0.9, 0.95, 1.0, 1.05, 1.1])
avals = np.arange(2.5, 7.5, 0.25)
magmin = 1.0
magmax = 8.0
magstep = 0.5
magarray = np.arange(magmin, magmax, magstep)
m0array = gr.calc_m0(magarray)
nevents = np.zeros((len(avals), len(bvals), len(magarray)))
m0total = np.zeros((len(avals), len(bvals)))
# Fill in matrix of nevents and m0total
for i, a in enumerate(avals):
for j, b in enumerate(bvals):
gro = gr.GutenbergRichter(a=a, b=b, max_m0=max_m0)
gro.calc_m0total()
m0total[i, j] = gro.m0total
nevents[i, j, :] = gro.get_N(magarray)
# subtract events from next bin up to avoid double counting
for k in range(len(magarray)):
if (k + 1 < len(magarray)):
nevents[i, j, k] = nevents[i, j, k] - nevents[i, j, k + 1]
secday = 24.0*3600.0
secyear = secday*365.0
# Read in attenuation curve and sample on distarray
# model = 'DWAK'
model = 'EH45Tcold'
# model = 'EH45TcoldCrust1b'
max_dep = gr_obj.max_dep
# Define upper and lower bounds with an order of magnitude uncertainty on both
# m0total and max_m0
m0total_upper = m0total * 10.0
m0total_lower = m0total * 0.1
max_m0_upper = max_m0 * 10.0
max_m0_lower = max_m0 * 0.1
# Define the Gutenberg-Richter relationship values for uncertainty estimates
# gr_obj = gr.GutenbergRichter(b=slope, m0total=m0total, max_m0=max_m0,
# min_m0=min_m0)
# gr_obj.calc_a()
gr_obj_upper1 = gr.GutenbergRichter(b=slope,
m0total=m0total_upper,
max_m0=max_m0,
min_m0=min_m0)
gr_obj_upper1.calc_a()
gr_obj_upper2 = gr.GutenbergRichter(b=slope,
m0total=m0total_upper,
max_m0=max_m0_lower,
min_m0=min_m0)
gr_obj_upper2.calc_a()
gr_obj_lower1 = gr.GutenbergRichter(b=slope,
m0total=m0total_lower,
max_m0=max_m0,
min_m0=min_m0)
gr_obj_lower1.calc_a()
gr_obj_lower2 = gr.GutenbergRichter(b=slope,
m0total=m0total_lower,
max_m0=max_m0_upper,