Data Services Products: Metadata: Categories: Contributed

The following products are in the cContributed category (14):

syngine On demand custom 3D AxiSEM synthetic seismograms

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

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Surface-Wave Radiation Patterns - Directional Dependency of Radiation of Seismic Energy from Surface Waves

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.

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ESEC Exotic Seismic Events Catalog

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.

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EARS EarthScope Automated Receiver Survey

EARS Retirement Announcement

As EarthScope SAGE products transition to the cloud, the EARS data product will be retired at the end of June 2024. EARS will continue to deliver data via the current interface until the migration is complete. All data up to July 2024 will then be transferred to the cloud. Details on accessing data post-migration will be provided in due course.

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.

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EnvelopeFunctions Continuous envelope functions

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.

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MomentTensor Centroid Moment Tensors

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.

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EMTF Magnetotelluric Transfer Functions

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).

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Noise Toolkit The IRIS DMC Noise Toolkit

The IRIS DMC 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

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EventBulletins Event Bulletins

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).

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FilmChip The USGS WWFC Pilot Scanning Project

Results of a pilot project whereby WWSSN seismic records, originally recorded on film, were digitized.

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