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:

http://ds.iris.edu/ds/products/momenttensor/#citation

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 6.4 (GCMT) NEAR COAST OF GUERRERO, MEXICO icon
Centroid Event
Date-Time (UTC): 2026-01-02 13:58:23
Location: NEAR COAST OF GUERRERO, MEXICO
Latitude, Longitude: 16.920 °, -99.430 °
Magnitude: 6.4 MW
Depth: 24.5 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Event
Date-Time (UTC): 2026-01-02 13:58:16
Location: NEAR COAST OF GUERRERO, MEXICO
Latitude, Longitude: 16.875 °, -99.336 °
Magnitude: 6.5 mww (us)
Depth: 18.0 km
Author: us,pt,at,usauto
Catalog, Contributor: NEIC PDE, us
Related Products:
CMT Details
Event ID C202601021358A
Timestamp: Q-20260103083946
CMT Version: Quick
NDK Version: V10
Reference Catalog: PDEW
Source Zero Trace
Moment Rate Fn: TRIHD
Half Duration: 4.0
Depth Determination: FREE
Scalar Moment 5.62 e+25 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 25, Units: dyne-cm)
ComponentValueError
Mrr2.660.017
Mtt-3.160.015
Mpp0.4990.013
Mrt4.180.056
Mrp-2.20.042
Mtp0.9060.012
Principal Axes (Length Exponent: 25, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T39605.358
N29490.522
P19929-5.882
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP12651860
NP21167499
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves14736940
Mantle Waves133247125
Surface Waves14836550
Event Location
Source NDK
PDEW 2026/01/02 13:58:18.4  16.90  -99.30  35.0 0.0 6.5 NEAR COAST OF GUERRERO, 
C202601021358A   B:147  369  40 S:148  365  50 M:133  247 125 CMT: 1 TRIHD:  4.0
CENTROID:      4.8 0.0  16.92 0.00  -99.43 0.00  24.5  0.2 FREE Q-20260103083946
25  2.660 0.017 -3.160 0.015  0.499 0.013  4.180 0.056 -2.200 0.042  0.906 0.012
V10   5.358 60  39   0.522  9 294  -5.882 29 199   5.620 265 18   60 116 74   99
Other Formats
Other Products For This Event
Product TypeDescriptionOrganization
Global ShakeMovie syntheticGlobal ShakeMovie synthetic for MW 6.4 NEAR COAST OF GUERRERO, MEXICOIRIS
GMVGMV for mww 6.5 NEAR COAST OF GUERRERO, MEXICOIncorporated Research Institutions for Seismology
Back ProjectionsBack Projections for mww 6.5 NEAR COAST OF GUERRERO, MEXICOEarthScope
Event PlotsEvent Plots for mww 6.5 NEAR COAST OF GUERRERO, MEXICOIncorporated Research Institutions for Seismology
AftershocksAftershocks for mww 6.5 NEAR COAST OF GUERRERO, MEXICOIRIS DMC
Surface-Wave Radiation PatternsSurface-Wave Radiation Patterns for MW 6.4 NEAR COAST OF GUERRERO, MEXICOIncorporated Research Institutions for Seismology
Contributions