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 7.7 (GCMT) DRAKE PASSAGE icon
Centroid Event
Date-Time (UTC): 2025-10-10 20:29:43
Location: DRAKE PASSAGE
Latitude, Longitude: -60.110 °, -62.020 °
Magnitude: 7.7 MW
Depth: 32.3 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Event
Date-Time (UTC): 2025-10-10 20:29:20
Location: DRAKE PASSAGE
Latitude, Longitude: -60.189 °, -61.824 °
Magnitude: 7.6 Mww (us)
Depth: 6.505 km
Author: us,pt,at,usauto
Catalog, Contributor: NEIC PDE, us
Related Products:
CMT Details
Event ID C202510102029A
Timestamp: S-20251229213838
CMT Version: Final
NDK Version: V10
Reference Catalog: PDEW
Source Zero Trace
Moment Rate Fn: TRIHD
Half Duration: 16.7
Depth Determination: FREE
Scalar Moment 4.023 e+27 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 27, Units: dyne-cm)
ComponentValueError
Mrr-0.2980.009
Mtt1.680.007
Mpp-1.390.008
Mrt1.650.054
Mrp1.490.055
Mtp3.150.006
Principal Axes (Length Exponent: 27, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T327244.626
N17064-1.213
P619-3.421
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP11066611
NP21280156
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves17141250
Mantle Waves176457150
Surface Waves16237450
Event Location
Source NDK
PDEW 2025/10/10 20:29:20.2 -60.19  -61.82   6.5 0.0 7.6 DRAKE PASSAGE           
C202510102029A   B:171  412  50 S:162  374  50 M:176  457 150 CMT: 1 TRIHD: 16.7
CENTROID:     23.2 0.1 -60.11 0.00  -62.02 0.01  32.3  0.3 FREE S-20251229213838
27 -0.298 0.009  1.680 0.007 -1.390 0.008  1.650 0.054  1.490 0.055  3.150 0.006
V10   4.626 24 327  -1.213 64 170  -3.421  9  61   4.023 106 66   11  12 80  156
Other Formats
Other Products For This Event
Product TypeDescriptionOrganization
AftershocksAftershocks for Mww 7.6 DRAKE PASSAGEIRIS DMC
Back ProjectionsBack Projections for Mww 7.6 DRAKE PASSAGEEarthScope
Surface-Wave Radiation PatternsSurface-Wave Radiation Patterns for MW 7.7 DRAKE PASSAGEIncorporated Research Institutions for Seismology
Event PlotsEvent Plots for Mww 7.6 DRAKE PASSAGEIncorporated Research Institutions for Seismology
GMVGMV for Mww 7.6 DRAKE PASSAGEIncorporated Research Institutions for Seismology
Contributions