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: 39.420 °, 143.580 °
Magnitude: 6.7 MW
Depth: 12.4 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: S-20260129212332
CMT Version: Final
NDK Version: V10
Reference Catalog: PDEW
Source Zero Trace
Moment Rate Fn: TRIHD
Half Duration: 5.3
Depth Determination: FREE
Scalar Moment 1.274 e+26 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 26, Units: dyne-cm)
ComponentValueError
Mrr0.6370.003
Mtt0.0270.002
Mpp-0.6650.002
Mrt0.4080.008
Mrp1.00.014
Mtp-0.1850.002
Principal Axes (Length Exponent: 26, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T297611.242
N20040.062
P10829-1.305
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP11851675
NP2217494
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves16042350
Mantle Waves158347125
Surface Waves16846250
Event Location
Source NDK
PDEW 2025/11/09 08:03:39.4  39.49  143.38  18.0 0.0 6.8 OFF EAST COAST OF HONSHU
C202511090803A   B:160  423  50 S:168  462  50 M:158  347 125 CMT: 1 TRIHD:  5.3
CENTROID:      9.2 0.0  39.42 0.00  143.58 0.00  12.4  0.1 FREE S-20260129212332
26  0.637 0.003  0.027 0.002 -0.665 0.002  0.408 0.008  1.000 0.014 -0.185 0.002
V10   1.242 61 297   0.062  4 200  -1.305 29 108   1.274 185 16   75  21 74   94
Other Formats
Other Products For This Event
Product TypeDescriptionOrganization
AftershocksAftershocks for mww 6.8 OFF EAST COAST OF HONSHU, JAPANIRIS DMC
Back ProjectionsBack Projections for mww 6.8 OFF EAST COAST OF HONSHU, JAPANEarthScope
Surface-Wave Radiation PatternsSurface-Wave Radiation Patterns for MW 6.7 OFF EAST COAST OF HONSHU, JAPANIncorporated Research Institutions for Seismology
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
Contributions