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 7.0 (GCMT) SOUTHEASTERN ALASKA icon
Centroid Event
Date-Time (UTC): 2025-12-06 20:42:01
Location: SOUTHEASTERN ALASKA
Latitude, Longitude: 60.590 °, -139.650 °
Magnitude: 7.0 MW
Depth: 12.0 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Event
Date-Time (UTC): 2025-12-06 20:41:48
Location: SOUTHEASTERN ALASKA
Latitude, Longitude: 60.308 °, -139.549 °
Magnitude: 6.8 ML (AK)
Depth: 5.0 km
Author: ak,us,at,pt,usauto
Catalog, Contributor: NEIC PDE, us
Related Products:
CMT Details
Event ID C202512062041A
Timestamp: S-20260228201538
CMT Version: Final
NDK Version: V10
Reference Catalog: PDEW
Source Zero Trace
Moment Rate Fn: TRIHD
Half Duration: 7.5
Depth Determination: FIX
Scalar Moment 3.657 e+26 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 26, Units: dyne-cm)
ComponentValueError
Mrr1.820.008
Mtt-3.920.008
Mpp2.10.008
Mrt0.7420.03
Mrp1.090.03
Mtp0.8040.007
Principal Axes (Length Exponent: 26, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T282413.226
N90490.861
P1866-4.088
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP131558153
NP2616736
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves17548550
Mantle Waves171399125
Surface Waves17344050
Event Location
Source NDK
PDEW 2025/12/06 20:41:51.3  60.40 -139.60  17.0 0.0 7.0 SOUTHEASTERN ALASKA     
C202512062041A   B:175  485  50 S:173  440  50 M:171  399 125 CMT: 1 TRIHD:  7.5
CENTROID:     10.1 0.0  60.59 0.00 -139.65 0.01  12.0  0.0 FIX  S-20260228201538
26  1.820 0.008 -3.920 0.008  2.100 0.008  0.742 0.030  1.090 0.030  0.804 0.007
V10   3.226 41 282   0.861 49  90  -4.088  6 186   3.657 315 58  153  61 67   36
Other Formats
Other Products For This Event
Product TypeDescriptionOrganization
Global ShakeMovie syntheticGlobal ShakeMovie synthetic for MW 7.0 SOUTHEASTERN ALASKAIRIS
Back ProjectionsBack Projections for ML 6.815786 SOUTHEASTERN ALASKAEarthScope
Surface-Wave Radiation PatternsSurface-Wave Radiation Patterns for MW 7.0 SOUTHEASTERN ALASKAIncorporated Research Institutions for Seismology
AftershocksAftershocks for ML 6.815786 SOUTHEASTERN ALASKAIRIS DMC
GMVGMV for ML 6.815786 SOUTHEASTERN ALASKAIncorporated Research Institutions for Seismology
Event PlotsEvent Plots for ML 6.815786 SOUTHEASTERN ALASKAIncorporated Research Institutions for Seismology
EQ EnergyEQ Energy for ML 6.815786 SOUTHEASTERN ALASKAIncorporated Research Institutions for Seismology
Contributions