FDSN Dataselect Web Service

The dataselect webservice gives access to multiple channels of FDSN miniSEED data for specified time ranges.

NOTE: polling for real-time continuous data is not allowed.
Please contact IRIS to setup a seedlink for a real-time feed.

To see a full list of service parameters and their usage, click

Query: fdsnws/dataselect/1/query?[query-parameters], where query-parameters:

net="network"	Required	Specify SEED network code, example net=CI. Wildcards and comma separated lists are accepted.
sta="station"	Required	Specify SEED station code, example sta=PASC. Wildcards and comma separated list are accepted.
cha="channel"	Required	Specify SEED channel code mask, example cha=BHE. Wildcards and comma separated list are accepted.
loc="location"	Required	Specify SEED location code mask, example loc=00. Substitute dashes (-) for white space, example loc=--. Wildcards and comma separated list are accepted.
start=YYYY-MM-DDThh:mm:ss[.sss]	Required	Specify the start time of the miniSEED data.
end=YYYY-MM-DDThh:mm:ss[.sss]	Required	Specify the end time of the miniSEED data.
quality=B\|D\|M\|Q\|R	Optional	Specify data quality (refer SEED manual).
format=miniseed \| mseed	Optional	Specify output format. Only miniSEED is supported as of now.
nodata=204\|404	Optional	Specify which HTML status code is returned when no data is found (Default is 204).

POST USAGE

Alternately, instead of providing parameter-value pairs in the URL, a file containing a selection list can be provided. This file must be submitted using HTTP POST. The selection list is composed of network, station, location, channel, start and end time entries. An example POST selection list might looke like:

CI BAK -- BHE 2014-01-01T00:00:00 2014-01-01T01:00:00
CI PASC 00 HHE 2018-02-02T22:00:00 2018-02-02T23:00:00
CI PASC 10 HNE 2017-03-03T00:00:00 2017-03-03T02:00:00

Requests can be made with a selection file via the unix wget or curl commands:
wget --post-file=[file containing selection list] -O out.mseed https://service.scedc.caltech.edu/fdsnws/dataselect/1/query
OR
curl --data-binary @[file containing selection list] -o out.mseed https://service.scedc.caltech.edu/fdsnws/dataselect/1/query

A selection list submission form is also provided for form based POST requests.

Valid request time windows

Requested time windows that don't fit this formula will return no data.
(timewindow * sr + 100) <= 400 * 1024 * 1024 / 4
where timewindow is end-start in seconds, sr is sample rate of the channel.

Sample rate	Window(days)
100	12
40	30
1	1213

URL Builder

Station

net

sta

cha

loc

Use dashes (-) instead of blank spaces. For e.g. loc=--

Time & Quality

start

end

Quality

Output

Format

URL: /fdsnws/dataselect/1/query?

Note: Requested time windows that don't fit this formula will return no data.
(timewindow * sr + 100) <= 400 * 1024 * 1024 / 4
where timewindow is end-start in seconds, sr is sample rate of the channel.
See help for valid request windows.

Submission Form

WADL

Retrieve the WADL associated with this service: application.wadl

Please use the following citation to cite data downloaded from SCEDC:
SCEDC (2013): Southern California Earthquake Center.
Caltech.Dataset. doi:10.7909/C3WD3xH1

To cite use of waveform data from stations maintained by other networks:
If you use a SCEDC waveform dataset that contains data with network codes other than 'CI', please cite the network and its DOI. Use the FDSN network list to find the network code and its corresponding DOI.

Version: FDSN Dataselect Service:1.1.1