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function_noise.py
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function_noise.py
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from obspy.core.utcdatetime import UTCDateTime
from obspy import read, read_inventory
from obspy.clients.fdsn import Client
import obspy as ob
from obspy.io.xseed import Parser
#======================================================================
# Time selection used to analyse noise profiles in specific parts of the day
def time_selection(y, m, d):
dt_s = [UTCDateTime(str(y) + '-' + str(m) + '-' + str(d) + 'T02:00:00'),
UTCDateTime(str(y) + '-' + str(m) + '-' + str(d) + 'T08:00:00'),
UTCDateTime(str(y) + '-' + str(m) + '-' + str(d) + 'T14:00:00'),
UTCDateTime(str(y) + '-' + str(m) + '-' + str(d) + 'T20:00:00')]
dt_e = [UTCDateTime(str(y) + '-' + str(m) + '-' + str(d) + 'T03:00:00'),
UTCDateTime(str(y) + '-' + str(m) + '-' + str(d) + 'T09:00:00'),
UTCDateTime(str(y) + '-' + str(m) + '-' + str(d) + 'T15:00:00'),
UTCDateTime(str(y) + '-' + str(m) + '-' + str(d) + 'T21:00:00')]
return dt_s, dt_e
#======================================================================
# Directory read funtion
def dir_read(day_number):
file_name = {}
file_name['E'] = '/home/alec/RSPSHK_DATA/2020/AM/RC54F/EHE.D/AM.RC54F.00.EHE.D.2020.' + str(day_number)
file_name['Z'] = '/home/alec/RSPSHK_DATA/2020/AM/RC54F/EHZ.D/AM.RC54F.00.EHZ.D.2020.' + str(day_number)
file_name['N'] = '/home/alec/RSPSHK_DATA/2020/AM/RC54F/EHN.D/AM.RC54F.00.EHN.D.2020.' + str(day_number)
return file_name
#======================================================================
def dir_read_bkn(y,m,d):
dir_bkn_mseed = []
dir_bkn_mseed.append('/home/alec/BKNdata/BKN_BHZ_' + str(y) + '-' + str(m) + '-' + str(d) + 'T02:00:00.000000.mseed')
dir_bkn_mseed.append('/home/alec/BKNdata/BKN_BHZ_' + str(y) + '-' + str(m) + '-' + str(d) + 'T08:00:00.000000.mseed')
dir_bkn_mseed.append('/home/alec/BKNdata/BKN_BHZ_' + str(y) + '-' + str(m) + '-' + str(d) + 'T14:00:00.000000.mseed')
dir_bkn_mseed.append('/home/alec/BKNdata/BKN_BHZ_' + str(y) + '-' + str(m) + '-' + str(d) + 'T20:00:00.000000.mseed')
return dir_bkn_mseed
#======================================================================
# Removing response from BKN data
def read_rm_resp(mseedpath, dlseedpath, resp='ACC'):
st = ob.read(mseedpath)
#---------- Remove instrument response -----------------------
parser = Parser(dlseedpath)
coords = parser.get_coordinates(st[0].stats.channel)
paz = parser.get_paz(st[0].stats.channel)
# BDS PAZ are already in DISP
prefilt = (0.01,0.02,35,40)
st.simulate(paz_remove=paz,zero_mean=True,pre_filt=prefilt)
if resp=='ACC':
st.differentiate()
st.differentiate()
elif resp=='VEL':
st.differentiate()
return st
#======================================================================
# Noise profile generation
def noise_prof_rspshk(day_number, year, month, day):
day_num = day_number
file_name = dir_read(day_num)
pre_filt = (0.01, 0.02, 40.0, 45.0)
dt_s, dt_e = time_selection(year, month, day)
inv_RSPSHK_Z = read_inventory('/home/alec/Code/code_/out4.response.restored-EHZ-plus-decimation-new', format = 'RESP')
inv_RSPSHK_E = read_inventory('/home/alec/Code/CODE/out4.response.restored-EHE-plus-decimation-new', format = 'RESP')
inv_RSPSHK_N = read_inventory('/home/alec/Code/CODE/out4.response.restored-EHN-plus-decimation-new', format = 'RESP')
xx_E = []
xx_N = []
xx_Z = []
for x in range(len(dt_s)):
dt = dt_s[x]
dt1 = dt_e[x]
st_E = read(str(file_name['E']), startime = dt, endtime = dt1)
st_Z = read(str(file_name['Z']), startime = dt, endtime = dt1)
st_N = read(str(file_name['N']), startime = dt, endtime = dt1)
st_E.remove_response(inventory = inv_RSPSHK_E, output = 'ACC', pre_filt = pre_filt)
st_Z.remove_response(inventory = inv_RSPSHK_Z, output = 'ACC', pre_filt = pre_filt)
st_N.remove_response(inventory = inv_RSPSHK_N, output = 'ACC', pre_filt = pre_filt)
xx_E.append(st_E)
xx_Z.append(st_Z)
xx_N.append(st_N)
return(xx_Z)
#======================================================================
#Noise profile for Z axis
def noise_prof_rspshk_z(day_number, year, month, day):
day_num = day_number
file_name = dir_read(day_num)
pre_filt = (0.01, 0.02, 40.0, 45.0)
dt_s, dt_e = time_selection(year, month, day)
inv_RSPSHK_Z = read_inventory('/home/alec/Code/code_/out4.response.restored-EHZ-plus-decimation-new', format = 'RESP')
xx_Z = []
for x in range(len(dt_s)):
dt = dt_s[x]
dt1 = dt_e[x]
st_Z = read(str(file_name['Z']), startime = dt, endtime = dt1)
st_Z.remove_response(inventory = inv_RSPSHK_Z, output = 'ACC', pre_filt = pre_filt)
print('stream', st_Z)
xx_Z.append(st_Z)
return(xx_Z)
#======================================================================
# Station stream (Currently unused)
def station_stream(y,m,d,pre_filt):
client = Client('http://fdsnws.raspberryshakedata.com')
station_num = ['R8118', 'R453F', 'R98E6', 'RFB08', 'R0353']
dt_s, dt_e = time_selection(y,m,d)
at = []
inv = []
# Iterating the loop for the 4 selected time zones
for x in range(len(dt_s)):
dt = dt_s[x]
dt1 = dt_e[x]
# Response removal for all 4 stations
for i in range(len(station_num)):
st = client.get_waveforms('AM', station_num[i], '00', 'EHZ', dt, dt1)
inventory = client.get_stations(network = 'AM',
station = station_num[i],
location = '00',
channel = 'EHZ',
level = 'response',
starttime = dt,
endtime = dt1)
inv.append(inventory)
st.remove_response(inventory = inv[i],
output = 'ACC',
pre_filt = pre_filt)
at.append(st)
return(at)
def station_stream_RSPBOOM(y,m,d,pre_filt):
client = Client('http://fdsnws.raspberryshakedata.com')
station_num = ['R5754', 'R7BC1', 'RD120', 'RD5DB']
dt_s, dt_e = time_selection(y,m,d)
at = []
inv = []
# Iterating the loop for the 4 selected time zones
for x in range(len(dt_s)):
dt = dt_s[x]
dt1 = dt_e[x]
# Response removal for all 4 stations
for i in range(len(station_num)):
st = client.get_waveforms('AM', station_num[i], '00', 'HDF', dt, dt1)
inventory = client.get_stations(network = 'AM',
station = station_num[i],
location = '00',
channel = 'HDF',
level = 'response',
starttime = dt,
endtime = dt1)
inv.append(inventory)
st.remove_response(inventory = inv[i],
output = 'ACC',
pre_filt = pre_filt)
at.append(st)
return(at)
#======================================================================
# Calculating Day Number from date
def day_number(y,m,d):
import datetime
date = datetime.datetime.strptime(str(y) + '-' + str(m) + '-' + str(d), "%Y-%m-%d")
x = date.timetuple()
num = x.tm_yday
return num
#======================================================================