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[refs #200] use distance in kilometres

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ObsPy provides the epicentral distance in degree if the event information are read from a NLLoc hyp-file. To calculate the correct moment magnitude values it is essential to have the distance in kilometres instead.
This commit is contained in:
Sebastian Wehling-Benatelli 2016-09-07 11:05:10 +02:00
parent 12641f8d52
commit f6d05dd2cc
1 changed files with 17 additions and 14 deletions
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19
QtPyLoT.py
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@ -39,6 +39,7 @@ from PySide.QtGui import QMainWindow, QInputDialog, QIcon, QFileDialog, \
import numpy as np import numpy as np
import subprocess import subprocess
from obspy import UTCDateTime from obspy import UTCDateTime
from obspy.geodetics import degrees2kilometers
from obspy.core.event import Magnitude from obspy.core.event import Magnitude
from pylot.core.analysis.magnitude import calcsourcespec, calcMoMw from pylot.core.analysis.magnitude import calcsourcespec, calcMoMw
@ -955,27 +956,29 @@ class MainWindow(QMainWindow):
if e.origins: if e.origins:
o = e.origins[0] o = e.origins[0]
mags = dict() mags = dict()
for a in o.arrivals:
pick = a.pick_id.get_referred_object()
station = pick.waveform_id.station_code
wf = self.get_data().getWFData().select(station=station)
onset = pick.time
fninv = settings.value("inventoryFile", None) fninv = settings.value("inventoryFile", None)
if fninv is None: if fninv is None:
fninv, _ = QFileDialog.getOpenFileName(self, self.tr( fninv, _ = QFileDialog.getOpenFileName(self, self.tr(
"Select inventory..."), self.tr("Select file")) "Select inventory..."), self.tr("Select file"))
ans = QMessageBox.question(self, self.tr("Make default..."), ans = QMessageBox.question(self, self.tr("Make default..."),
self.tr("New inventory filename set.\n" + \ self.tr(
"New inventory filename set.\n" + \
"Do you want to make it the default value?"), "Do you want to make it the default value?"),
QMessageBox.Yes | QMessageBox.No, QMessageBox.Yes | QMessageBox.No,
QMessageBox.No) QMessageBox.No)
if ans == QMessageBox.Yes: if ans == QMessageBox.Yes:
settings.setValue("inventoryFile", fninv) settings.setValue("inventoryFile", fninv)
settings.sync() settings.sync()
w0, fc = calcsourcespec(wf, onset, fninv, 3000., a.distance, for a in o.arrivals:
pick = a.pick_id.get_referred_object()
station = pick.waveform_id.station_code
wf = self.get_data().getWFData().select(station=station)
onset = pick.time
dist = degrees2kilometers(a.distance)
w0, fc = calcsourcespec(wf, onset, fninv, 3000., dist,
a.azimuth, a.takeoff_angle, a.azimuth, a.takeoff_angle,
"300f**0.8", 0) "300f**0.8", 0)
stat_mags = calcMoMw(wf, w0, 2700., 3000., a.distance, fninv) stat_mags = calcMoMw(wf, w0, 2700., 3000., dist, fninv)
mags[station] = stat_mags mags[station] = stat_mags
mag = np.median([M[1] for M in mags.values()]) mag = np.median([M[1] for M in mags.values()])
return Magnitude(mag=mag, magnitude_type='Mw') return Magnitude(mag=mag, magnitude_type='Mw')