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 °, -62.000 °
Magnitude: 7.7 MW
Depth: 31.8 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Event
Date-Time (UTC): 2025-10-10 20:29:20
Location: DRAKE PASSAGE
Latitude, Longitude: -60.196 °, -61.799 °
Magnitude: 7.6 Mww (us)
Depth: 8.794 km
Author: us,pt,at,usauto
Catalog, Contributor: NEIC PDE, us
Related Products:
CMT Details
Event ID C202510102029A
Timestamp: Q-20251010213850
CMT Version: Quick
NDK Version: V10
Reference Catalog: PDEQ
Source Zero Trace
Moment Rate Fn: TRIHD
Half Duration: 16.7
Depth Determination: FREE
Scalar Moment 4.052 e+27 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 27, Units: dyne-cm)
ComponentValueError
Mrr-0.2930.009
Mtt1.630.007
Mpp-1.330.008
Mrt1.830.055
Mrp1.510.055
Mtp3.150.006
Principal Axes (Length Exponent: 27, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T327254.735
N16564-1.36
P607-3.368
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP11066713
NP21178156
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves14936550
Mantle Waves152408150
Surface Waves14232150
Event Location
Source NDK
PDEQ 2025/10/10 20:29:20.9 -60.17  -61.97  10.5 0.0 7.6 DRAKE PASSAGE           
C202510102029A   B:149  365  50 S:142  321  50 M:152  408 150 CMT: 1 TRIHD: 16.7
CENTROID:     22.6 0.1 -60.11 0.00  -62.00 0.01  31.8  0.3 FREE Q-20251010213850
27 -0.293 0.009  1.630 0.007 -1.330 0.008  1.830 0.055  1.510 0.055  3.150 0.006
V10   4.735 25 327  -1.360 64 165  -3.368  7  60   4.052 106 67   13  11 78  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