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 7.5 (GCMT) DRAKE PASSAGE icon
Centroid Event
Date-Time (UTC): 2025-05-02 12:58:49
Location: DRAKE PASSAGE
Latitude, Longitude: -57.210 °, -67.780 °
Magnitude: 7.5 MW
Depth: 18.8 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Event
Date-Time (UTC): 2025-05-02 12:58:26
Location: DRAKE PASSAGE
Latitude, Longitude: -56.811 °, -68.197 °
Magnitude: 7.4 mww (us)
Depth: 10.0 km
Author: at,us,pt,usauto
Catalog, Contributor: NEIC PDE, us
Related Products:
CMT Details
Event ID C202505021258A
Timestamp: S-20250729204155
CMT Version: Final
NDK Version: V10
Reference Catalog: PDEW
Source Zero Trace
Moment Rate Fn: TRIHD
Half Duration: 13.6
Depth Determination: FREE
Scalar Moment 2.182 e+27 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 27, Units: dyne-cm)
ComponentValueError
Mrr2.030.008
Mtt-0.8410.005
Mpp-1.190.005
Mrt0.5640.044
Mrp-0.3040.041
Mtp1.110.003
Principal Axes (Length Exponent: 27, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T10802.14
N13860.083
P2298-2.224
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP132637100
NP21335382
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves17244750
Mantle Waves174473150
Surface Waves16341350
Event Location
Source NDK
PDEW 2025/05/02 12:58:26.0 -56.81  -68.10  10.0 0.0 7.4 DRAKE PASSAGE           
C202505021258A   B:172  447  50 S:163  413  50 M:174  473 150 CMT: 1 TRIHD: 13.6
CENTROID:     23.2 0.1 -57.21 0.00  -67.78 0.01  18.8  0.2 FREE S-20250729204155
27  2.030 0.008 -0.841 0.005 -1.190 0.005  0.564 0.044 -0.304 0.041  1.110 0.003
V10   2.140 80  10   0.083  6 138  -2.224  8 229   2.182 326 37  100 133 53   82
Other Formats
Other Products For This Event
Product TypeDescriptionOrganization
GMVGMV for mww 7.4 DRAKE PASSAGEIncorporated Research Institutions for Seismology
AftershocksAftershocks for mww 7.4 DRAKE PASSAGEIRIS DMC
Back ProjectionsBack Projections for mww 7.4 DRAKE PASSAGEIRIS DMC
Surface-Wave Radiation PatternsSurface-Wave Radiation Patterns for MW 7.5 DRAKE PASSAGEIncorporated Research Institutions for Seismology
EQ EnergyEQ Energy for mww 7.4 DRAKE PASSAGEIncorporated Research Institutions for Seismology
Event PlotsEvent Plots for mww 7.4 DRAKE PASSAGEIncorporated Research Institutions for Seismology
Contributions