The Synthetics Engine (Syngine) service provides access to custom tailored synthetic seismograms.
The following products are in the c — Contributed category (14):
The IRIS DMC’s Surface-Wave Radiation Pattern product shows the patterns of seismic energy radiation by azimuth around the epicenter for Rayleigh and Love waves. For all events with moment magnitude Mw ≥ 6.0, the product provides plots based on the source mechanism reported by the Global CMT Project. The event-based radiation patterns are accompanied by an interactive plot based on source mechanisms chosen by the user.
ESEC is a compilation of data on non-earthquake seismic sources such as landslides, debris flows, dam collapses, floods, and avalanches that generate seismic signals but are rarely included in common earthquake catalogs. This catalog is designed to allow new entries as information regarding new recent and historic events becomes available. We strongly encourage contributions to ESEC catalog. If you are interested in becoming a contributor to this catalog, please see the ESEC Event Contribution Guidelines.
The shear-wave splitting (SWS) databases data product provides the geosciences community with an easy access to two published databases:
- The Géosciences Montpellier SplitLab sShear-wave splitting database
- The Missouri University of Science and Technology (Missouri S&T) shear-wave splitting database for western and central United States
The EarthScope Automated Receiver Survey (EARS) calculates bulk crustal properties of IRIS stations using receiver functions. Originally developed at the University of South Carolina, EARS continuously monitors for new events and stations updating the database when new candidate data are found.
A collection of continuous envelope functions to search for tectonic tremor and for data quality analysis. Envelope functions are computed automatically by the Earth and Space Sciences Department of the University of Washington utilizing selected portions of the IRIS DMC waveform archive and are distributed by the IRIS DMC.
Download synthetics from ShakeMovie website
The Global ShakeMovie website at Princeton provides bundles of all calculated synthetics in SAC format for reach event as tar files.
Search for synthetics at IRIS
Events for which synthetics are available in the DMC archive are listed in SPUD.
Global Centroid-Moment-Tensors from the GCMT project at Lamont-Doherty Earth Observatory are available through SPUD within minutes after their publication. Initial quick-CMT solutions are shown and are later updated to GCMT solutions when updates arrive.
USArray magnetotelluric transfer functions (MT TFs) calculated at USArray MT sites installed by Oregon State University, as well as other community magnetotelluric transfer functions, are available from the SPUD EMTF repository in both XML and EDI formats. The international magnetotelluric community is invited to use the EMTF repository to archive their MT TFs. Please contact Anna Kelbert for support; all data formats are accepted and a data citation is created upon submission of data to the searchable repository.
The XML format for electromagnetic transfer functions and related conversion software was developed at Oregon State University under an NSF award, and later improved and updated by the USGS Geomagnetism Program, with continued support from IRIS. A living software repository is available in the SeisCode EMTF-FCU project File Conversion Utilities project. Detailed documentation and usage examples are provided by Kelbert (2009).
The IRIS DMC Noise Toolkit is a collection of 3 open-source Python script bundles for:
- Computing Power Spectral Densities (PSD) of waveform data
- Performing microseism energy computations from PSDs
- Performing frequency dependent polarization analysis of seismograms
Results of a pilot project whereby WWSSN seismic records, originally recorded on film, were digitized.
Retrieve station calibrations in SEED format
Station Digest reports for decomissioned USArray Transportable Array stations.