# obspy.clients.iris - IRIS web service client for ObsPy

The obspy.clients.iris package contains a client for the DMC Web services provided by IRIS (https://service.iris.edu/irisws/).

copyright: | The ObsPy Development Team (devs@obspy.org)
license: | GNU Lesser General Public License, Version 3 (https://www.gnu.org/copyleft/lesser.html)

## Local Alternatives

ObsPy contains local alternatives to some of the calculation tools offered by the IRIS web services. Consider using them when working within ObsPy:

IRIS Web Service | Equivalent ObsPy Function/Module
--- | ---
`obspy.clients.iris.client.Client.traveltime()` | `obspy.taup`
`obspy.clients.iris.client.Client.distaz()` | `obspy.geodetics`
`obspy.clients.iris.client.Client.flinnengdahl()` | `obspy.geodetics.flinnengdahl.FlinnEngdahl`

## Web service Interfaces

Each of the following methods directly wrap a single Web service provided by IRIS (https://service.iris.edu/irisws/):

Request Tools

- `evalresp()` - evaluates instrument response information stored at the IRIS DMC and outputs ASCII data or Bode Plots.
- `resp()` - provides access to channel response information in the SEED RESP format (as used by evalresp)
- `sacpz()` - provides access to instrument response information (per-channel) as poles and zeros in the ASCII format used by SAC and other programs
- `timeseries()` - fetches segments of seismic data and returns data formatted in either MiniSEED, ASCII or SAC. It can optionally filter the data.

Calculation Tools

- `traveltime()` - calculates travel-times for seismic phases using a 1-D spherical Earth model.
- `distaz()` - calculate the distance and azimuth between two points on a sphere.
- `flinnengdahl()` - converts a latitude, longitude pair into either a Flinn-Engdahl seismic region code or region name.

Please see the documentation for each method for further information and examples to retrieve various data from the IRIS DMC.

## Classes & Functions

`client.Client` | IRIS Web service request client.

## Modules

`client` | IRIS Web service client for ObsPy.

### Thank you!

We would like to thank our contributors, whose efforts make this software what it is. These people have helped by writing code and documentation, and by testing. They have created and maintained this product, its associated libraries and applications, our build tools and our web sites.

#### Contributors

- Ackerley, Nick
- Allgeyer, Sebastien
- Ammon, Charles J.
- Antunes, Emanuel
- Arnarsson, Ólafur St.
- Bank, Markus
- Barsch, Robert
- Behr, Yannik
- Bernardi, Fabrizio
- Bernauer, Felix
- Bes de Berc, Maxime
- Beyreuther, Moritz
- Boltz, Shawn
- Bonaimé, Sébastien
- Carothers, Lloyd
- Chamberlain, Calum
- Chambers, Derrick
- Chen, Zhao
- Clark, Adam
- Danecek, Peter
- Egdorf, Sven
- Engels, Fabian
- Ermert, Laura
- Eulenfeld, Tom

- Fabbri, Tommaso
- Falco, Nicholas
- Fee, Jeremy
- Grellier, Clément
- Grunberg, Marc
- Hammer, Conny
- Heimann, Sebastian
- Heiniger, Lukas
- Hope, Gaute
- Igel, Heiner
- Inza, Adolfo
- Isken, Marius
- Ketchum, David
- Koymans, Mathijs
- Kremers, Simon
- Kress, Victor
- Krieger, Lars
- Krischer, Lion
- Kula, Damian
- Käufl, Paul
- Köhler, Andreas
- Lecocq, Thomas
- Leeman, John
- Legovini, Paride

- Lesage, Philippe
- Li, Yulin
- Lomax, Anthony
- Lopes, Rui L.
- MacCarthy, Jonathan
- Maggi, Alessia
- Martin, Henri
- Medlin, Andrew
- Megies, Tobias
- Meschede, Matthias
- Michelini, Alberto
- Miller, Nathaniel C.
- Morgenstern, Bernhard
- Nof, Ran Novitsky
- Panning, Mark P.
- Parker, Tom
- Pestourie, Romain
- Rapagnani, Giovanni
- Reyes, Celso
- Ringler, Adam
- Rothenhäusler, Nicolas
- Russo, Emiliano
- Sales de Andrade, Elliott

- Satriano, Claudio
- Saul, Joachim
- Scheingraber, Chris
- Schneider, Simon
- Sippl, Christian
- Snoke, Arthur
- Stange, Stefan
- Stähler, Simon C.
- Sullivan, Benjamin
- Tian, Dongdong
- Trabant, Chad
- Trani, Luca
- Uieda, Leonardo
- Walker, Andrew
- Walther, Marcus
- Wassermann, Joachim
- Williams, Mark C.
- Winkelman, Andrew
- Zaccarelli, Riccardo
- Zad, Seyed Kasra Hosseini
- Zhu, Lijun
- van Driel, Martin
- van Wijk, Kasper

#### Funds

ObsPy was partially funded by the

- German Science Foundation (DFG) via grant DFG IG 16/9-1
- German Ministry for Education and Research (BMBF), GEOTECHNOLOGIEN grant 03G0646H.
- NERA project (Network of European Research Infrastructures for Earthquake Risk Assessment and Mitigation) under the European Community's Seventh Framework Programme (FP7/2007-2013) grant agreement n° 262330
- Leibniz Institute for Applied Geophysics (LIAG)
- VERCE EU-FP7 project (no. 283543)