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 6.4 (GCMT) LEEWARD ISLANDS icon
Centroid Event
Date-Time (UTC): 2025-10-27 12:38:46
Location: LEEWARD ISLANDS
Latitude, Longitude: 16.540 °, -59.480 °
Magnitude: 6.4 MW
Depth: 12.0 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Event
Date-Time (UTC): 2025-10-27 12:38:40
Location: LEEWARD ISLANDS
Latitude, Longitude: 16.542 °, -59.583 °
Magnitude: 6.5 mww (us)
Depth: 9.0 km
Author: pt,at,us,usauto
Catalog, Contributor: NEIC PDE, us
Related Products:
CMT Details
Event ID C202510271238A
Timestamp: Q-20251027163841
CMT Version: Quick
NDK Version: V10
Reference Catalog: PDEQ
Source Zero Trace
Moment Rate Fn: TRIHD
Half Duration: 4.1
Depth Determination: FIX
Scalar Moment 5.844 e+25 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 25, Units: dyne-cm)
ComponentValueError
Mrr-4.370.02
Mtt-1.450.021
Mpp5.820.02
Mrt-0.2150.055
Mrp1.820.054
Mtp-2.670.018
Principal Axes (Length Exponent: 25, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T25296.98
N3448-2.272
P11678-4.708
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP133237-104
NP217055-80
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves14332140
Mantle Waves117255125
Surface Waves13930550
Event Location
Source NDK
PDEQ 2025/10/27 12:38:40.3  16.53  -59.57   9.0 0.0 6.5 LEEWARD ISLANDS         
C202510271238A   B:143  321  40 S:139  305  50 M:117  255 125 CMT: 1 TRIHD:  4.1
CENTROID:      6.6 0.0  16.54 0.00  -59.48 0.00  12.0  0.0 FIX  Q-20251027163841
25 -4.370 0.020 -1.450 0.021  5.820 0.020 -0.215 0.055  1.820 0.054 -2.670 0.018
V10   6.980  9 252  -2.272  8 344  -4.708 78 116   5.844 332 37 -104 170 55  -80
Other Formats
Other Products For This Event
Product TypeDescriptionOrganization
AftershocksAftershocks for mww 6.5 LEEWARD ISLANDSIRIS DMC
Surface-Wave Radiation PatternsSurface-Wave Radiation Patterns for MW 6.4 LEEWARD ISLANDSIncorporated Research Institutions for Seismology
EQ EnergyEQ Energy for mww 6.5 LEEWARD ISLANDSIncorporated Research Institutions for Seismology
GMVGMV for mww 6.5 LEEWARD ISLANDSIncorporated Research Institutions for Seismology
Event PlotsEvent Plots for mww 6.5 LEEWARD ISLANDSIncorporated Research Institutions for Seismology
Back ProjectionsBack Projections for mww 6.5 LEEWARD ISLANDSEarthScope
Contributions