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 6.7 (GCMT) OFF EAST COAST OF HONSHU, JAPAN icon
Centroid Event
Date-Time (UTC): 2025-11-09 08:03:48
Location: OFF EAST COAST OF HONSHU, JAPAN
Latitude, Longitude: 39.430 °, 143.610 °
Magnitude: 6.7 MW
Depth: 13.4 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Event
Date-Time (UTC): 2025-11-09 08:03:39
Location: OFF EAST COAST OF HONSHU, JAPAN
Latitude, Longitude: 39.485 °, 143.378 °
Magnitude: 6.8 mww (us)
Depth: 18.0 km
Author: at,pt,us,usauto
Catalog, Contributor: NEIC PDE, us
Related Products:
CMT Details
Event ID C202511090803A
Timestamp: Q-20251109110621
CMT Version: Quick
NDK Version: V10
Reference Catalog: PDEQ
Source Zero Trace
Moment Rate Fn: TRIHD
Half Duration: 5.2
Depth Determination: FREE
Scalar Moment 1.206 e+26 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 26, Units: dyne-cm)
ComponentValueError
Mrr0.6390.003
Mtt0.0180.002
Mpp-0.6570.002
Mrt0.3640.007
Mrp0.9310.012
Mtp-0.1940.002
Principal Axes (Length Exponent: 26, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T296621.174
N19930.063
P10828-1.237
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP11881778
NP2207394
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves13936550
Mantle Waves136307125
Surface Waves14740850
Event Location
Source NDK
PDEQ 2025/11/09 08:03:37.8  39.40  143.41  10.0 0.0 6.8 OFF EAST COAST OF HONSHU
C202511090803A   B:139  365  50 S:147  408  50 M:136  307 125 CMT: 1 TRIHD:  5.2
CENTROID:     10.8 0.0  39.43 0.00  143.61 0.00  13.4  0.1 FREE Q-20251109110621
26  0.639 0.003  0.018 0.002 -0.657 0.002  0.364 0.007  0.931 0.012 -0.194 0.002
V10   1.174 62 296   0.063  3 199  -1.237 28 108   1.206 188 17   78  20 73   94
Other Formats
Other Products For This Event
Product TypeDescriptionOrganization
Back ProjectionsBack Projections for mww 6.8 OFF EAST COAST OF HONSHU, JAPANEarthScope
AftershocksAftershocks for mww 6.8 OFF EAST COAST OF HONSHU, JAPANIRIS DMC
EQ EnergyEQ Energy for mww 6.8 OFF EAST COAST OF HONSHU, JAPANIncorporated Research Institutions for Seismology
GMVGMV for mww 6.8 OFF EAST COAST OF HONSHU, JAPANIncorporated Research Institutions for Seismology
Event PlotsEvent Plots for mww 6.8 OFF EAST COAST OF HONSHU, JAPANIncorporated Research Institutions for Seismology
Surface-Wave Radiation PatternsSurface-Wave Radiation Patterns for MW 6.7 OFF EAST COAST OF HONSHU, JAPANIncorporated Research Institutions for Seismology
Contributions