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Removed calculation of source spectrum from autopick, as azimuth and angle of incidence are necessary and thus a location is needed for a reliable calculation of the source spectrum. Source spectrum is now calculated after locating the event.

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Ludger Küperkoch 2015-12-02 10:09:17 +01:00
parent 30970b8451
commit 40f38ebf84
1 changed files with 3 additions and 37 deletions
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40
pylot/core/pick/autopick.py
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@ -15,10 +15,10 @@ from scipy import integrate
from pylot.core.pick.Picker import AICPicker, PragPicker from pylot.core.pick.Picker import AICPicker, PragPicker
from pylot.core.pick.CharFuns import HOScf, AICcf, ARZcf, ARHcf, AR3Ccf from pylot.core.pick.CharFuns import HOScf, AICcf, ARZcf, ARHcf, AR3Ccf
from pylot.core.pick.utils import checksignallength, checkZ4S, earllatepicker,\ from pylot.core.pick.utils import checksignallength, checkZ4S, earllatepicker,\
getSNR, fmpicker, checkPonsets, wadaticheck, crossings_nonzero_all getSNR, fmpicker, checkPonsets, wadaticheck
from pylot.core.util.utils import getPatternLine from pylot.core.util.utils import getPatternLine
from pylot.core.read.data import Data from pylot.core.read.data import Data
from pylot.core.analysis.magnitude import WApp, w0fc from pylot.core.analysis.magnitude import WApp
def autopickevent(data, param): def autopickevent(data, param):
stations = [] stations = []
@ -138,8 +138,6 @@ def autopickstation(wfstream, pickparam):
Sflag = 0 Sflag = 0
Pmarker = [] Pmarker = []
Ao = None # Wood-Anderson peak-to-peak amplitude Ao = None # Wood-Anderson peak-to-peak amplitude
w0 = None # plateau of source spectrum
fc = None # corner frequancy of source spectrum
# split components # split components
zdat = wfstream.select(component="Z") zdat = wfstream.select(component="Z")
@ -314,37 +312,6 @@ def autopickstation(wfstream, pickparam):
else: else:
FM = 'N' FM = 'N'
##############################################################
# get DC value and corner frequency (fc) of source spectrum
# from P pulse
# initialize Data object
data = Data()
z_copy = zdat.copy()
[corzdat, restflag] = data.restituteWFData(invdir, z_copy)
if restflag == 1:
# integrate to displacement
corintzdat = integrate.cumtrapz(corzdat[0], None, corzdat[0].stats.delta)
z_copy[0].data = corintzdat
# largest detectable period == window length
# after P pulse for calculating source spectrum
winzc = (1 / bpz2[0]) * z_copy[0].stats.sampling_rate
impickP = mpickP * z_copy[0].stats.sampling_rate
wfzc = z_copy[0].data[impickP : impickP + winzc]
# calculate spectrum using only first cycles of
# waveform after P onset!
zc = crossings_nonzero_all(wfzc)
if np.size(zc) == 0 or len(zc) <= 3:
print ("Something is wrong with the waveform, "
"no zero crossings derived!")
print ("Cannot calculate source spectrum!")
else:
index = min([3, len(zc) - 1])
calcwin = (zc[index] - zc[0]) * z_copy[0].stats.delta
# calculate source spectrum and get w0 and fc
specpara = w0fc(z_copy, mpickP, calcwin, iplot)
w0 = specpara.getw0()
fc = specpara.getfc()
print ("autopickstation: P-weight: %d, SNR: %f, SNR[dB]: %f, " print ("autopickstation: P-weight: %d, SNR: %f, SNR[dB]: %f, "
"Polarity: %s" % (Pweight, SNRP, SNRPdB, FM)) "Polarity: %s" % (Pweight, SNRP, SNRPdB, FM))
Sflag = 1 Sflag = 1
@ -790,8 +757,7 @@ def autopickstation(wfstream, pickparam):
# for P phase # for P phase
phase = 'P' phase = 'P'
phasepick = {'lpp': lpickP, 'epp': epickP, 'mpp': mpickP, 'spe': Perror, phasepick = {'lpp': lpickP, 'epp': epickP, 'mpp': mpickP, 'spe': Perror,
'snr': SNRP, 'snrdb': SNRPdB, 'weight': Pweight, 'fm': FM, 'snr': SNRP, 'snrdb': SNRPdB, 'weight': Pweight, 'fm': FM}
'w0': w0, 'fc': fc}
picks = {phase: phasepick} picks = {phase: phasepick}
# add P marker # add P marker
picks[phase]['marked'] = Pmarker picks[phase]['marked'] = Pmarker