def get_event_object(dict_or_id):
"""Get Obspy Event object using event ID or dictionary (see get_event_dict).
Args:
eventid (dict_or_id): Event ID that can be found in ComCat, or dict.
Returns:
Event: Obspy Event object.
"""
if isinstance(dict_or_id, str):
event_dict = get_event_dict(dict_or_id)
elif isinstance(dict_or_id, dict):
event_dict = dict_or_id.copy()
else:
raise Exception('Unknown input parameter to get_event_info()')
origin = Origin()
origin.resource_id = event_dict['id']
origin.latitude = event_dict['lat']
origin.longitude = event_dict['lon']
origin.depth = event_dict['depth']
magnitude = Magnitude(mag=event_dict['magnitude'])
event = Event()
event.resource_id = event_dict['id']
event.origins = [origin]
event.magnitudes = [magnitude]
return event
def get_pref_origin(self, event):
source = Event.preferred_origin(event)
depth = source.depth
la_s = source.latitude
lo_s = source.longitude
time = source.time
return time, depth, la_s, lo_s
def test_scalar():
eid = "usp000hat0"
time = UTCDateTime("2010-04-06 22:15:01.580")
lat = 2.383
lon = 97.048
depth = 31.0
mag = 7.8
mag_type = "Mwc"
event = ScalarEvent()
origin = Origin(resource_id=eid,
time=time,
latitude=lat,
longitude=lon,
depth=depth * 1000)
magnitude = Magnitude(mag=mag, magnitude_type=mag_type)
event.origins = [origin]
event.magnitudes = [magnitude]
assert event.id == eid
assert event.time == time
assert event.latitude == lat
assert event.longitude == lon
assert event.depth_km == depth
assert event.magnitude == mag
assert event.magnitude_type == mag_type
subdir = os.path.join("data", "testdata", "usp000hat0_quakeml.xml")
quakeml = pkg_resources.resource_filename("gmprocess", subdir)
catalog = read_events(quakeml)
tevent = catalog.events[0]
event = ScalarEvent.fromEvent(tevent)
assert event.id == "quakeml:us.anss.org/origin/pde20100406221501580_31"
assert event.time == time
assert event.latitude == lat
assert event.longitude == lon
assert event.depth_km == depth
assert event.magnitude == mag
assert event.magnitude_type == mag_type
event = ScalarEvent()
event.fromParams(eid, time, lat, lon, depth, mag, mag_type)
assert isinstance(event, Event)
assert event.origins[0].resource_id == eid
assert event.origins[0].time == time
assert event.origins[0].latitude == lat
assert event.origins[0].longitude == lon
assert event.origins[0].depth == depth * 1000
assert event.magnitudes[0].mag == mag
assert event.magnitudes[0].magnitude_type == mag_type
tevent = Event()
origin = Origin(resource_id=eid,
time=time,
longitude=lon,
latitude=lat,
depth=depth * 1000)
magnitude = Magnitude(resource_id=eid, mag=mag, magnitude_type=mag_type)
tevent.origins = [origin]
tevent.magnitudes = [magnitude]
event2 = ScalarEvent.fromEvent(tevent)
assert isinstance(event2, Event)
assert event2.origins[0].resource_id == eid
assert event2.origins[0].time == time
assert event2.origins[0].latitude == lat
assert event2.origins[0].longitude == lon
assert event2.origins[0].depth == depth * 1000
assert event2.magnitudes[0].mag == mag
assert event2.magnitudes[0].magnitude_type == mag_type
def get_pref_scalarmoment(self, event):
magnitude = Event.preferred_magnitude(event)
Mw = magnitude.mag
M = self.Magnitude2Scalarmoment(Mw)
return M
def test_scalar():
eid = 'usp000hat0'
time = UTCDateTime('2010-04-06 22:15:01.580')
lat = 2.383
lon = 97.048
depth = 31.0
mag = 7.8
event = ScalarEvent()
origin = Origin(resource_id=eid,
time=time,
latitude=lat,
longitude=lon,
depth=depth * 1000)
magnitude = Magnitude(mag=mag)
event.origins = [origin]
event.magnitudes = [magnitude]
assert event.id == eid
assert event.time == time
assert event.latitude == lat
assert event.longitude == lon
assert event.depth_km == depth
assert event.magnitude == mag
subdir = os.path.join('data', 'testdata', 'usp000hat0_quakeml.xml')
quakeml = pkg_resources.resource_filename('gmprocess', subdir)
catalog = read_events(quakeml)
tevent = catalog.events[0]
event = ScalarEvent.fromEvent(tevent)
assert event.id == 'quakeml:us.anss.org/origin/pde20100406221501580_31'
assert event.time == time
assert event.latitude == lat
assert event.longitude == lon
assert event.depth_km == depth
assert event.magnitude == mag
event = ScalarEvent()
event.fromParams(eid, time, lat, lon, depth, mag)
assert isinstance(event, Event)
assert event.origins[0].resource_id == eid
assert event.origins[0].time == time
assert event.origins[0].latitude == lat
assert event.origins[0].longitude == lon
assert event.origins[0].depth == depth * 1000
assert event.magnitudes[0].mag == mag
tevent = Event()
origin = Origin(resource_id=eid,
time=time,
longitude=lon,
latitude=lat,
depth=depth * 1000)
magnitude = Magnitude(resource_id=eid, mag=mag)
tevent.origins = [origin]
tevent.magnitudes = [magnitude]
event2 = ScalarEvent.fromEvent(tevent)
assert isinstance(event2, Event)
assert event2.origins[0].resource_id == eid
assert event2.origins[0].time == time
assert event2.origins[0].latitude == lat
assert event2.origins[0].longitude == lon
assert event2.origins[0].depth == depth * 1000
assert event2.magnitudes[0].mag == mag
def test_scalar():
eid = 'usp000hat0'
time = UTCDateTime('2010-04-06 22:15:01.580')
lat = 2.383
lon = 97.048
depth = 31.0
mag = 7.8
event = ScalarEvent()
origin = Origin(resource_id=eid,
time=time,
latitude=lat,
longitude=lon,
depth=depth * 1000)
magnitude = Magnitude(mag=mag)
event.origins = [origin]
event.magnitudes = [magnitude]
assert event.id == eid
assert event.time == time
assert event.latitude == lat
assert event.longitude == lon
assert event.depth_km == depth
assert event.magnitude == mag
subdir = os.path.join('data', 'testdata', 'usp000hat0_quakeml.xml')
quakeml = pkg_resources.resource_filename('gmprocess', subdir)
catalog = read_events(quakeml)
tevent = catalog.events[0]
event = ScalarEvent.fromEvent(tevent)
assert event.id == 'quakeml:us.anss.org/origin/pde20100406221501580_31'
assert event.time == time
assert event.latitude == lat
assert event.longitude == lon
assert event.depth_km == depth
assert event.magnitude == mag
event = ScalarEvent()
event.fromParams(eid, time, lat, lon, depth, mag)
assert isinstance(event, Event)
assert event.origins[0].resource_id == eid
assert event.origins[0].time == time
assert event.origins[0].latitude == lat
assert event.origins[0].longitude == lon
assert event.origins[0].depth == depth * 1000
assert event.magnitudes[0].mag == mag
tevent = Event()
origin = Origin(resource_id=eid,
time=time,
longitude=lon,
latitude=lat,
depth=depth * 1000)
magnitude = Magnitude(resource_id=eid,
mag=mag)
tevent.origins = [origin]
tevent.magnitudes = [magnitude]
event2 = ScalarEvent.fromEvent(tevent)
assert isinstance(event2, Event)
assert event2.origins[0].resource_id == eid
assert event2.origins[0].time == time
assert event2.origins[0].latitude == lat
assert event2.origins[0].longitude == lon
assert event2.origins[0].depth == depth * 1000
assert event2.magnitudes[0].mag == mag
def main(st, fname, verbose=False):
fs = st[0].stats.sampling_rate
# Detect STA/LTA for all geodes, with minimum number of stations included
proc1 = time.time()
detection_list, cft_stream = network_detection(st, cft_return=True)
proc2 = time.time()
Logger.info("Network detection search done in %f s." % (proc2 - proc1))
Logger.info("Number of network detections = %d" % len(detection_list))
# Get picks and stats, iterating detection by detection, then station by station
# Buffer window before and after detection
buffer1 = 3.0 # 0.2
buffer2 = 10.0
# Load ERT data
ert_surveys_file = "survey_times_ERT.csv"
dateparse = lambda x: pd.datetime.strptime(x, '%Y-%m-%d %H:%M:%S')
ert_surveys = pd.read_csv(ert_surveys_file,
parse_dates=["time_local_start"],
date_parser=dateparse)
ert_surveys["time_local_start"] = ert_surveys[
"time_local_start"].dt.tz_localize("America/Edmonton",
ambiguous="infer")
ert_surveys["time_utc_start"] = ert_surveys[
"time_local_start"].dt.tz_convert(None)
ert_surveys["time_utc_end"] = ert_surveys["time_utc_start"] + pd.Timedelta(
25, unit="m")
ert_surveys["time_utc_end"] = pd.to_datetime(ert_surveys["time_utc_end"])
ert_surveys["time_utc_start"] = pd.to_datetime(
ert_surveys["time_utc_start"])
catalog = Catalog()
# Loop over each STA/LTA detection
for detection in detection_list:
# Skip if detection happens during ERT survey
tmin = detection["time"]._get_datetime()
is_ert_on = \
ert_surveys.loc[(ert_surveys['time_utc_start'] <= tmin) & (ert_surveys['time_utc_end'] >= tmin)].shape[
0] > 0
if is_ert_on:
Logger.warning("Skip false detection during ERT survey.")
continue
Logger.info("DETECTION TIME: %s\n\t DURATION_SEC: %f" %
(detection["time"], detection["duration"]))
det_start = detection["time"]
det_end = detection["time"] + detection["duration"]
# Detection stream
det_st = st.slice(starttime=det_start - buffer1,
endtime=det_end + buffer2)
det_st.detrend()
det_st_to_save = det_st.copy()
t_plt = det_st[0].times("matplotlib")
t_utc = det_st[0].times("utcdatetime")
det_cft = cft_stream.slice(starttime=det_start - buffer1,
endtime=det_end + buffer2)
# Stations in detection stream
station_list = list(set(detection["stations"]))
station_list.sort()
# Check if frequencies within window are anomalous
highf_ratio_threshold = 0.6
for station in station_list:
tmp = det_st.select(station=station).copy()
nbad = 0
for tr in tmp:
ratio = highf_ratio(data=tr.data, sampling_rate=fs)
if ratio > highf_ratio_threshold:
nbad += 1
if nbad > 0:
for tr in tmp:
Logger.warning(
"Removing station %s because for %d traces, ratio of frequencies above %f is above %f"
% (station, nbad, 0.25 * fs, highf_ratio_threshold))
det_st.remove(tr)
# Stations in detection stream
station_list = list(set(detection["stations"]))
station_list.sort()
if len(station_list) < 4:
Logger.warning(
"Only %d stations left, less than 4, so skipping this detection"
% len(station_list))
# Search window for phase around STA/LTA detection time
idet_start = (np.abs(t_utc - det_start)).argmin()
idet_end = (np.abs(t_utc - det_end)).argmin()
idx_search_max = range(idet_start, idet_end)
# Analyze stations one by one
pol_st = Stream()
event_phases = []
for ista, station in enumerate(station_list):
# Select waveform and STA-LTA streams
sta_st = det_st.select(station=station).copy()
network = sta_st[0].stats.network
sta_st.detrend()
sta_cft = det_cft.select(station=station).copy()
sta_cft_stack = (sta_cft.select(channel="DPZ")[0].data +
sta_cft.select(channel="DPN")[0].data +
sta_cft.select(channel="DPE")[0].data) / 3
# Polarization properties
tpol, pol_dict, pol_st_sta = modified_polarization_analysis(
sta_st, dominant_period=DOM_PERIOD, interpolate=True)
pol_st += pol_st_sta
# Energy response curve for pick detection
per = peak_eigenvalue_ratio(pol_dict["eigenvalue1"],
win_len=int(2 * DOM_PERIOD * fs))
per = eps_smooth(per, w=int(EPS_WINLEN * fs))
jer = joint_energy_ratio(sta_cft_stack, t_plt, per, tpol)
# Extract phases
sta_phases = get_phases(response_curve=jer,
idx_search_max=idx_search_max,
time=t_utc,
pol=pol_dict,
verbose=False)
if sta_phases:
# Now do some quality control
snr_threshold = 2.5
win_len_s = 0.2
sta_phases["station"] = station
sta_phases["network"] = network
if sta_phases["P"]["arrival_time"]:
arr_time = sta_phases["P"]["arrival_time"] - 0.02
snr, channel = get_snr_phase(sta_st,
time=arr_time,
win_len_s=win_len_s,
verbose=False,
tnoise=None)
Logger.info("SNR for P pick %s.%s..%s: %f \t at t = %s" %
(network, station, channel, snr, arr_time))
if snr < snr_threshold:
#Logger.info("P pick below SNR threshold of %f" % snr_threshold)
sta_phases["P"]["arrival_time"] = None
else:
sta_phases["P"]["SNR"] = snr
sta_phases["P"]["channel"] = channel
if sta_phases["S"]["arrival_time"]:
arr_time = sta_phases["S"]["arrival_time"] - 0.02
if sta_phases["P"]["arrival_time"]:
tnoise = sta_phases["P"]["arrival_time"] - 0.02
else:
tnoise = None
snr, channel = get_snr_phase(sta_st.select(),
time=arr_time,
win_len_s=win_len_s,
verbose=False,
tnoise=tnoise)
Logger.info("SNR for S pick %s.%s..%s: %f \t at t = %s" %
(network, station, channel, snr, arr_time))
if snr < snr_threshold:
Logger.info("S pick below SNR threshold of %f" %
snr_threshold)
sta_phases["S"]["arrival_time"] = None
else:
sta_phases["S"]["SNR"] = snr
sta_phases["S"]["channel"] = channel
Logger.info("Station %s: t_P = %s\tt_S = %s" %
(station, sta_phases["P"]["arrival_time"],
sta_phases["S"]["arrival_time"]))
event_phases.append(sta_phases)
else:
Logger.info("No phase found for station %s" % station)
# End of for loop over stations
if not event_phases:
Logger.info("No picks found at all for this detection.")
continue
else:
nump = len([p for p in event_phases if p["P"]["arrival_time"]])
nums = len([p for p in event_phases if p["S"]["arrival_time"]])
Logger.info("Number of initial picks before MCCC: P = %d, S = %d" %
(nump, nums))
if nump + nums == 0:
Logger.info("No picks found at all for this detection.")
continue
# if verbose:
# plot_phases(event_phases, det_st)
# wadati_plot(event_phases, det_st)
# Align with mccc
Logger.info("Refining picks with MCCC")
event_phases = align_mccc(event_phases=event_phases,
stream=det_st,
verbose=False)
nump = len([p for p in event_phases if p["P"]["arrival_time"]])
nums = len([p for p in event_phases if p["S"]["arrival_time"]])
if nump == 0 and nums == 0:
Logger.warning("No remaining picks after MCCC!")
continue
elif nump + nums < 5:
Logger.info("Less than 5 picks remaining. Skipping event.")
continue
if verbose:
Logger.info("Number of picks after MCCC: P = %d, S = %d" %
(nump, nums))
wadati_plot(event_phases, det_st)
plot_phases(event_phases, det_st)
# Update polarization statistics
Logger.info("Updating polarization attributes")
phase_len_tol = int(10 * DOM_PERIOD * fs)
for i, staph in enumerate(event_phases):
sta_st = det_st.select(station=staph["station"]).copy()
t = sta_st[0].times("utcdatetime")
tpol, pol_dict, _ = modified_polarization_analysis(
sta_st, dominant_period=DOM_PERIOD, interpolate=True)
tp = staph["P"]["arrival_time"]
if tp:
idxP = np.argmin(np.abs(t - tp))
stats = pol_window_stats(pol_dict,
idxP,
phase_len_tol,
show_stats=False)
event_phases[i]["P"]["pol_stats"] = stats
ts = staph["S"]["arrival_time"]
if ts:
idxS = np.argmin(np.abs(t - ts))
stats = pol_window_stats(pol_dict,
idxS,
phase_len_tol,
show_stats=False)
event_phases[i]["S"]["pol_stats"] = stats
# Convert to obspy Picks and Event
event_picks = []
for i, staph in enumerate(event_phases):
event_picks += sta_phases_to_pick(staph=staph)
event = Event(picks=event_picks)
# Estimate average event distance using availables pairs of P and S picks
r_med = distance_from_tstp(event.picks, min_estim=1)
if not r_med: # We cannot estimate r, hence magnitude
Logger.warning(
"Couldn't estimate hypocentral distance from ts-tp. No magnitude calculation."
)
# Add event to catalog
if verbose:
Logger.info(
"Adding event to catalog: *******************************************"
)
Logger.info(event)
catalog.events.append(event)
stfilepath = os.path.join("detections_waveforms",
det_start.strftime("%Y%m%d"))
if not os.path.exists(stfilepath):
os.mkdir(stfilepath)
det_st_to_save.write(os.path.join(
stfilepath,
"bhdetect_%s.mseed" % det_start.strftime("%Y%m%d%H%M%S")),
format="MSEED")
continue
# Calculate magnitudes
Logger.info("Computing magnitudes...")
magtime_contriblist = []
magspec_contriblist = []
for ista, station in enumerate(station_list):
sta_picks = [
p for p in event.picks if p.waveform_id.station_code == station
]
r = distance_from_tstp(sta_picks, min_estim=2)
if not r:
r = r_med
ts = get_pick(event.picks, station, "S")
if not ts: # No ts pick
Logger.warning("There is no S pick for station %s." % station)
continue
sta_st = det_st.select(station=station).copy()
sta_st.detrend()
# Estimate coda
tp = get_pick(event.picks, station, "P")
if not tp:
tsig = ts - 0.5
else:
tsig = tp - 0.02
tcoda, s_len, snr = get_coda_duration(sta_st.copy(),
tsig=tsig,
ts=ts,
win_len_s=0.2)
if not tcoda:
if verbose:
Logger.info(
"Couldn't calculate coda duration for station %s skipping..."
% station)
continue
# Save coda info
amp = Amplitude(generic_amplitude=tcoda,
snr=snr,
type="END",
category="duration",
unit="s",
magnitude_hint="Md")
event.amplitudes.append(amp)
# Estimate energy flux
if tp:
Logger.info("Calculating energy flux fr station %s" % station)
epsilonS = 0
for tr in sta_st.copy():
tr_cut = tr.trim(starttime=ts, endtime=ts + (ts - tp)).data
cumsum_u2 = scipy.integrate.cumtrapz(tr_cut**2,
dx=tr.stats.delta)
epsilonS += cumsum_u2[-1]
amp = Amplitude(generic_amplitude=epsilonS,
snr=snr,
type="A",
category="integral",
unit="other",
time_window=TimeWindow(begin=ts - tp,
end=2 * (ts - tp),
reference=tp),
waveform_id=WaveformStreamID(
network_code=tr.stats.network,
station_code=tr.stats.station))
event.amplitudes.append(amp)
# Estimate Mw for each component
Mw_spec_sta = []
Mw_time_sta = []
Q_spec_sta = []
fc_spec_sta = []
for tr in sta_st:
# Cut noise window and S waveform
noise_len = s_len
taper_perc = 0.1
trnoise = tr.copy()
trnoise.trim(starttime=tsig - (1 + taper_perc) * noise_len,
endtime=tsig - taper_perc * noise_len)
trnoise.taper(type="hann",
max_percentage=taper_perc,
side="both")
tr.trim(starttime=ts - taper_perc * s_len,
endtime=ts + (1 + taper_perc) * s_len)
tr.taper(type="hann", max_percentage=taper_perc, side="both")
# Check SNR
snr_trace = np.median(tr.slice(starttime=ts, endtime=ts + s_len).data) / \
np.median(trnoise.data)
if snr_trace < 3:
Logger.info(
"SNR < 3, skipping trace for magnitude calculation.")
# Poor SNR, skip trace
continue
# Displacement waveform
trdisp = tr.copy()
trdisp.integrate()
trdisp.detrend()
# Estimate magnitude: time method
Mw_time, M0_time, omega0_time = estimate_magnitude_time(
trdisp, r, disp=False)
Mw_time_sta.append(Mw_time)
# Estimate magnitude: spectral method
Mw_o, M0_o, omega0_o, fc_o, Q_o = estimate_magnitude_spectral(
trdisp, r, omega0_time, trnoise=None, disp=False)
if not Mw_o:
Logger.warning("No magnitude found due to errors.")
continue
elif fc_o < 2 or Q_o > 40 or Q_o < 1: # Qs Attenuation larger than Sandstone=31, shale=10
# Reject spectral estimate
Logger.warning(
"Rejecting spectral estimate with: fc = %f, Q = %f" %
(fc_o, Q_o))
continue
else:
Mw_spec_sta.append(Mw_o)
Q_spec_sta.append(Q_o)
fc_spec_sta.append(fc_o)
# Now get average for station as a whole
Logger.info(
"Found %d estimates of Mw using time method for station %s." %
(len(Mw_time_sta), station))
Logger.info(
"Found %d estimates of Mw using spectral method for station %s."
% (len(Mw_spec_sta), station))
if Mw_time_sta:
smagt = StationMagnitude(
mag=np.mean(Mw_time_sta),
mag_errors=QuantityError(uncertainty=np.std(Mw_time_sta)),
station_magnitude_type="Mw_time",
comments=[Comment(text="snr = %f" % snr)])
event.station_magnitudes.append(smagt)
contrib = StationMagnitudeContribution(
station_magnitude_id=smagt.resource_id, weight=snr)
magtime_contriblist.append(contrib)
Logger.info("Magnitude time estimate = %f" %
np.mean(Mw_time_sta))
if Mw_spec_sta:
smags = StationMagnitude(
mag=np.mean(Mw_spec_sta),
mag_errors=QuantityError(uncertainty=np.std(Mw_spec_sta)),
station_magnitude_type="Mw_spectral",
comments=[
Comment(text="Q_mean = %f, Q_std = %f" %
(np.mean(Q_spec_sta), np.std(Q_spec_sta))),
Comment(text="Fc_mean = %f, Fc_std = %f" %
(np.mean(fc_spec_sta), np.std(fc_spec_sta))),
Comment(text="snr = %f" % snr)
])
event.station_magnitudes.append(smags)
contrib = StationMagnitudeContribution(
station_magnitude_id=smags.resource_id, weight=snr)
magspec_contriblist.append(contrib)
Logger.info("Magnitude spectral estimate = %f" %
np.mean(Mw_spec_sta))
Logger.info("Fc = %f, Q = %f" %
(np.mean(fc_spec_sta), np.mean(Q_spec_sta)))
# End of for loop over stations
# Get magnitude for event
if magspec_contriblist:
Logger.info(
"Found %d station estimates of Mw using spectral method." %
len(magspec_contriblist))
wave_num = 0
wave_den = 0
val_list = []
for m in magspec_contriblist:
mval = [
sm.mag for sm in event.station_magnitudes
if sm.resource_id == m.station_magnitude_id
][0]
wave_num += mval * m.weight
wave_den += m.weight
val_list.append(mval)
mag = wave_num / wave_den
mags = Magnitude(
mag=mag,
mag_errors=np.std(val_list),
magnitude_type="Mw_spectral",
station_count=len(magspec_contriblist),
station_magnitude_contributions=magspec_contriblist)
event.magnitudes.append(mags)
Logger.info(
"Event magnitude estimate using spectral method: Mw = %f" %
mags.mag)
if magtime_contriblist:
Logger.info("Found %d station estimates of Mw using time method." %
len(magtime_contriblist))
wave_num = 0
wave_den = 0
val_list = []
for m in magtime_contriblist:
mval = [
sm.mag for sm in event.station_magnitudes
if sm.resource_id == m.station_magnitude_id
][0]
wave_num += mval * m.weight
wave_den += m.weight
val_list.append(mval)
mag = wave_num / wave_den
magt = Magnitude(
mag=mag,
mag_errors=np.std(val_list),
magnitude_type="Mw_time",
station_count=len(magtime_contriblist),
station_magnitude_contributions=magtime_contriblist)
event.magnitudes.append(magt)
Logger.info("Event magnitude estimate using time method: Mw = %f" %
magt.mag)
# Add event to catalog
if verbose:
Logger.info(
"Adding event to catalog: *******************************************"
)
Logger.info(event)
catalog.events.append(event)
stfilepath = os.path.join("detections_waveforms",
det_start.strftime("%Y%m%d"))
if not os.path.exists(stfilepath):
os.mkdir(stfilepath)
det_st_to_save.write(os.path.join(
stfilepath,
"bhdetect_%s.mseed" % det_start.strftime("%Y%m%d%H%M%S")),
format="MSEED")
if len(catalog) > 0:
# Decluster
declustered_catalog = decluster_bh(catalog, trig_int=2.0)
if not os.path.exists(os.path.split(fname)[0]):
os.mkdir(os.path.split(fname)[0])
declustered_catalog.write(fname, format="QUAKEML")