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 7.3 (GCMT) SOUTH OF ALASKA icon
Centroid Event
Date-Time (UTC): 2025-07-16 20:37:53
Location: SOUTH OF ALASKA
Latitude, Longitude: 54.620 °, -159.980 °
Magnitude: 7.3 MW
Depth: 37.4 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Event
Date-Time (UTC): 2025-07-16 20:37:41
Location: ALASKA PENINSULA
Latitude, Longitude: 54.633 °, -160.532 °
Magnitude: 7.3 mww (us)
Depth: 38.0 km
Author: at,us,pt,usauto,ak
Catalog, Contributor: NEIC PDE, us
Related Products:
CMT Details
Event ID C202507162037A
Timestamp: S-20250928231614
CMT Version: Final
NDK Version: V10
Reference Catalog: PDEW
Source Zero Trace
Moment Rate Fn: TRIHD
Half Duration: 10.3
Depth Determination: FREE
Scalar Moment 0.948 e+27 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 27, Units: dyne-cm)
ComponentValueError
Mrr0.3350.003
Mtt-0.3980.002
Mpp0.0640.002
Mrt0.3980.01
Mrp0.2740.009
Mtp0.7270.002
Principal Axes (Length Exponent: 27, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T310370.945
N114520.008
P2148-0.952
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP134558157
NP2887134
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves17147550
Mantle Waves168442150
Surface Waves16844350
Event Location
Source NDK
PDEW 2025/07/16 20:37:41.7  54.56 -160.47  38.0 0.0 7.3 ALASKA PENINSULA        
C202507162037A   B:171  475  50 S:168  443  50 M:168  442 150 CMT: 1 TRIHD: 10.3
CENTROID:     11.9 0.1  54.62 0.00 -159.98 0.01  37.4  0.4 FREE S-20250928231614
27  0.335 0.003 -0.398 0.002  0.064 0.002  0.398 0.010  0.274 0.009  0.727 0.002
V10   0.945 37 310   0.008 52 114  -0.952  8 214   0.948 345 58  157  88 71   34
Other Formats
Other Products For This Event
Product TypeDescriptionOrganization
Global ShakeMovie syntheticGlobal ShakeMovie synthetic for MW 7.3 SOUTH OF ALASKAIRIS
Back ProjectionsBack Projections for mww 7.3 ALASKA PENINSULAIRIS DMC
Surface-Wave Radiation PatternsSurface-Wave Radiation Patterns for MW 7.3 SOUTH OF ALASKAIncorporated Research Institutions for Seismology
EQ EnergyEQ Energy for mww 7.3 ALASKA PENINSULAIncorporated Research Institutions for Seismology
Event PlotsEvent Plots for mww 7.3 ALASKA PENINSULAIncorporated Research Institutions for Seismology
GMVGMV for mww 7.3 ALASKA PENINSULAIncorporated Research Institutions for Seismology
Contributions