Data Services Products

A repository of Earth models with the aim of providing the research community with access to various Earth models, visualization tools for model preview, facilities to extract model data/metadata and access to the contributed processing software and scripts.

The Synthetics Engine (Syngine) service provides access to custom tailored synthetic seismograms for selected Earth and Mars models.

The IRIS DMC's Event Plot product is a suite of plots that are automatically generated following all earthquakes of magnitude 6 or greater. The plot suite uses all open broadband data, or a sub-selection, available at the IRIS DMC at the time the product was generated. Based on data availability and signal quality, some plots may not be produced for certain events.

Visualizations of real data showing how seismic waves from earthquakes sweep across the North American network of seismic stations for which data are openly available and are collected using the federated data access.

The Back-Projection (BP) product shows the beamformed time history and location of coherent short period P-wave energy generated by large earthquakes observed at three regional arrays and across the Global Seismic Network. These are generated following all global M6.5+ earthquakes. The back-projections typically take less than 10 minutes to compute, however arrival of event triggers, travel time of P-waves, downloading of data and shared DMC computing resources delays publication of results in SPUD to about an hour after origin time. These are fully automated and not reviewed by a human.

Global stacks of up to a million event-windowed seismograms using short-term to long-term averages (STA/LTA) in different frequency bands for vertical broadband data (1990-2012) available from the IRIS DMC. Long period versions include vertical and horizontal component data.

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.
NOTE: Query for Exotic Seismic Events Catalog is available on SPUD

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.

To support USArray TA infrasound data set, the IRIS Data Management Center (DMC) has developed two infrasound data products: the TA Infrasound Reference Event Database (TAIRED) and TA Infrasound Detections (TAID). These two data products are designed to provide insight and tools for researchers to begin working with this large, and somewhat unique, new data set.

Do-it-yourself automated surface wave tomography using the MATLAB based ASWMS package developed by Ge Jin & James Gaherty. This product provides 1) the ASWMS software package and 2) weekly updated USArray, Alaska surface wave tomography maps using ASWMS.

Animations and figures of seismicity automatically generated following large global earthquakes (Mag > 7).

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) was a fully automated data product designed to query EarthScope Web Services and calculate bulk crustal properties of seismic stations as new data arrived. As part of the EarthScope SAGE products transition to the cloud, the EARS data product was retired at the end of June 2024.

☁️ NOTE: Historical EARS data (1990 through June 2024) is available from the EARS Data Archive Repository.

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. NOTE: Query for Continuous Envelope Functions data product is available on SPUD

Earthquake energy and rupture durations are estimated following all earthquakes with initial magnitude above M_w 6.0 and a GCMT moment tensor. The method follows Convers and Newman, 2011. These are fully automated and not reviewed by a human.

Point-source synthetic seismograms are used along with vertical component recordings of short-arc Rayleigh waves (R1) from GCMT Mw7.0+ earthquakes to calculate source-time functions (STF) at GSN and other stations.

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.

An ambient noise cross-correlation based database of empirical Green's functions (EGFs) of the Western US using USArray Transportable Array (TA) data.

A nested global empirical Green’s tensor (EGT) database derived from three-component continuous data at global, continental and local length scales.

The database is intended to be an open database for anyone to contribute as long as data processing follows a consistent, best practice.

☁️ The EGT database is available from the Global Empirical Green’s Tensor (EGT) Database Repository page.

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 HVSR station software toolbox is a small suite of programs, written in Python, that allow users to perform HVSR analyses for seismic stations available from the IRIS DMC with minimum computational requirements. The toolbox utilizes the precomputed spectral analysis results from DMC’s MUSTANG quality assurance system to derive spectral powers and perform HVSR analyses.

_ The HVSR code_ is available from the The EarthScope HVSR GitHub repository.

The EarthScope DS Noise Toolkit is a collection of 3 open-source Python script bundles for:

1. Computing Power Spectral Densities (PSD) of waveform data
2. Performing microseism energy computations from PSDs
3. Performing frequency dependent polarization analysis of seismograms

The Noise Toolkit code is available from the The EarthScope Noise Toolkit (NTK) GitHub repository.

The SeisSound Visualization is an audio/video-based IRIS DMC data product that illustrates the frequency and amplitude content of seismograms. Conveying the seismograms frequency content both visually and audibly produces a better understanding of their spectral content.

The DMC receives and archives phase arrivals from the Array Network Facility (ANF). These event bulletins are accessible via DMC’s Searchable Product Depository (SPUD).

Query for Event Bulletin product is available on SPUD

☁️ The ANF CSS event database archive is available from the ANF CSS Event Database Archive.

Results of a pilot project whereby WWSSN seismic records, originally recorded on film, were digitized.
Query for Film Chip product is available on SPUD

Retrieve station calibrations in SEED format
Query for Calibration product is available on SPUD

Station Digest reports for decomissioned USArray Transportable Array stations.

Query for Station Digest product is available on SPUD