help to download data

Users Mailing List Archive
1

hello,
I use this python code to download data, but unfortunatelly, i cannot download. I need your help.

import obspy
from obspy.clients.fdsn.mass_downloader import RectangularDomain,
Restrictions, MassDownloader

Rectangular domain containing parts of southern Germany.

domain = RectangularDomain(minlatitude=2, maxlatitude=12,
minlongitude=6, maxlongitude=16)

restrictions = Restrictions(

Get data for a whole year.

starttime=obspy.UTCDateTime(2006, 1, 1),
endtime=obspy.UTCDateTime(2007, 1, 1),

Chunk it to have one file per day.

chunklength_in_sec=86400,

Considering the enormous amount of data associated with continuous

requests, you might want to limit the data based on SEED identifiers.

If the location code is specified, the location priority list is not

used; the same is true for the channel argument and priority list.

network=“XB”, station=“CM*”, location="", channel=“BH*”,

The typical use case for such a data set are noise correlations where

gaps are dealt with at a later stage.

reject_channels_with_gaps=False,

Same is true with the minimum length. All data might be useful.

minimum_length=0.0,

Guard against the same station having different names.

minimum_interstation_distance_in_m=100.0)

Restrict the number of providers if you know which serve the desired

data. If in doubt just don’t specify - then all providers will be

queried.

mdl = MassDownloader(providers=[“IRIS” ])
mdl.download(domain, restrictions, mseed_storage=“waveforms”,
stationxml_storage=“stations”)

2

Hi Gaelle,

import obspy
from obspy import UTCDateTime
from obspy.clients.fdsn import Client
client = Client(“KNMI”)
tstart = UTCDateTime(2017,8,31,0,0,0)
try:
st=client.get_waveforms(“NL”, “G144”, “", "”,
tstart, tstart+3600*24, attach_response=True,filename=“G144/”+str(tstart)[0:10]+".mseed")
except:
pass

Here is my code (modified from the obspy online tutorial), used for downloading one-year Groningen data. The mseed file will be saved to the file with name .

Chen

3

Hello,

this network has multiple locations per station, specifically '01' for 'LH*', and '02' for 'BH*'. Try to change your location parameter from '' to either '*', or '02' and it should work.

Best,
Marcel

4

Thank you marcel, it is working now.