GET /irisws/resp/1/query

iris.edu:iris-web-services

Summary: Get RESP instrument response
Operation ID: getRESP
Auth: none

Get instrument response in RESP format. RESP is the standard ASCII format for representing complete seismic instrument responses, including all poles, zeros, gain stages, and FIR filter coefficients. This format is widely used by seismic analysis software like SAC, ObsPy, and Seisan. Returns the full instrument response that describes how ground motion is transformed into digital counts by the seismometer and digitizer. Use this when you need complete instrument response information for accurate seismic data processing, such as removing instrument response to convert digital counts to physical ground motion units (velocity, acceleration, or displacement).

Original spec description

Retrieve SEED RESP format instrument response information.

Usage Tips

- RESP format is human-readable ASCII containing all response stages - The time parameter is crucial - instrument responses change when equipment is replaced - Use the sacpz endpoint for a simpler poles-and-zeros only representation - The response describes the complete system from ground motion to digital counts - Required for accurate deconvolution (removing instrument response from data) - Some stations may return 404 if the response metadata is not available - If no time is specified, the service may require it or return current response - Check that the location code (loc) is correct - many stations use '00' or '--'

Parameters (6)

channel (string, query, optional)

Channel code

endtime (string, query, optional)

End time

location (string, query, optional)

Location code

network (string, query, optional)

Network code

starttime (string, query, optional)

Start time

station (string, query, optional)

Station code

Examples (4)

TitleTypeURLAction
Get response for broadband vertical channel at Albuquerque curl https://service.iris.edu/irisws/resp/1/query?net=IU&sta=ANMO&loc=00&cha=BHZ&time=2023-01-01T00:00:00
Get response for high-frequency horizontal channel at Norwegian station curl https://service.iris.edu/irisws/resp/1/query?net=II&sta=KONO&loc=10&cha=HHN&time=2020-06-15T12:30:00
Get response for US network station with minimal parameters curl https://service.iris.edu/irisws/resp/1/query?net=US&sta=CBKS&cha=BHZ
Get RESP instrument response openapi-spec https://service.iris.edu/irisws/resp/1/query?network=IU&station=ANMO&channel=BHZ

Probe History

Latency

Status Codes

TimeStatusLatencySize
2026-03-23 10:41:39.219003 200 910ms
2026-03-23 09:30:05.227360 400 847ms
2026-03-23 09:18:50.952524 404 866ms
2026-03-23 09:08:07.211631 400 848ms

Response Changes

WhenOldNew
2026-03-23 09:18:50.952524 2624cdca29a0 d48c0982510f
2026-03-23 09:30:05.227360 d48c0982510f f94cb2af49e6
2026-03-23 10:41:39.219003 f94cb2af49e6 8818526d49ac