About SPUD

SPUD Version 3.0

The Searchable Product Depository (SPUD) is the IRIS DMC's primary data product management system. Complementing the DMC's SEED and assembled data archives, which contain time series recordings, the SPUD system primarily contains derivative data products of other types (images, movies, etc.) created either at the DMC or by members of the community.

For users SPUD is the query and access point for these products. The web interfaces allow users to search for products using customized queries across product and event details. Users can search across all product types at once or within specific product types. SPUD also has web service interfaces for programmatic discovery and access to the data products.

If any products from SPUD are used in your research please be sure to cite the identified author of the product and the IRIS DMS [Citation Information].

About Moment Tensor Products

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. The download button gives users the full NDK format solution. For more info, visit: www.globalcmt.org.

Citing Global Centroid-Moment-Tensor Products

If you use Moment Tensors in publications, please cite according to the instructions at:


When citing this Moment Tensor page please use the Digital Object Identifier (DOI):


Moment Tensor Help

The page displays information for individual Moment Tensors.

The centroid origin is displayed next to the primary origin from the IRIS database followed by the moment tensor details.

Moment Tensor for MW 7.4 (GCMT) OAXACA, MEXICO icon
Centroid Event
Date-Time (UTC): 2020-06-23 15:29:12
Latitude, Longitude: 16.020 °, -96.070 °
Magnitude: 7.4 MW
Depth: 21.5 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Date-Time (UTC): 2020-06-23 15:29:04
Latitude, Longitude: 15.883 °, -96.010 °
Magnitude: 7.4 mww (us)
Depth: 20.0 km
Author: at,pt,us
Catalog, Contributor: NEIC PDE, us
Related Products:
CMT Details
Event ID C202006231529A
Timestamp: S-20200904174019
CMT Version: Final
NDK Version: V10
Reference Catalog: PDEW
Source Zero Trace
Moment Rate Fn: TRIHD
Half Duration: 11.9
Depth Determination: FREE
Scalar Moment 1.457 e+27 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 27, Units: dyne-cm)
Principal Axes (Length Exponent: 27, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves17548850
Mantle Waves170425150
Surface Waves16943050
Event Location
Source NDK
PDEW 2020/06/23 15:29:04.3  15.88  -96.01  20.0 0.0 7.4 NEAR COAST OF OAXACA, ME
C202006231529A   B:175  488  50 S:169  430  50 M:170  425 150 CMT: 1 TRIHD: 11.9
CENTROID:      8.1 0.1  16.02 0.00  -96.07 0.01  21.5  0.3 FREE S-20200904174019
27  0.696 0.003 -0.704 0.002  0.008 0.002  1.090 0.021 -0.644 0.018  0.170 0.001
V10   1.461 59  39  -0.009  8 296  -1.452 30 201   1.457 268 16   61 118 76   98

Other Formats
Other Products For This Event
Product TypeDescriptionOrganization
Global ShakeMovie syntheticGlobal ShakeMovie synthetic for MW 7.4 OAXACA, MEXICOIRIS
Surface-Wave Radiation PatternsSurface-Wave Radiation Patterns for MW 7.4 OAXACA, MEXICOIncorporated Research Institutions for Seismology
EQ EnergyEQ Energy for mww 7.4 OAXACA, MEXICOIncorporated Research Institutions for Seismology
Back ProjectionsBack Projections for mww 7.4 OAXACA, MEXICOIncorporated Research Institutions for Seismology
AftershocksAftershocks for mww 7.4 OAXACA, MEXICOIncorporated Research Institutions for Seismology
Event PlotsEvent Plots for mww 7.4 OAXACA, MEXICOIncorporated Research Institutions for Seismology
GMVGMV for mww 7.4 OAXACA, MEXICOIncorporated Research Institutions for Seismology