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 6.2 (GCMT) ANDREANOF ISLANDS, ALEUTIAN IS. icon
Centroid Event
Date-Time (UTC): 2025-03-21 14:53:46
Location: ANDREANOF ISLANDS, ALEUTIAN IS.
Latitude, Longitude: 51.180 °, -176.060 °
Magnitude: 6.2 MW
Depth: 18.5 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Event
Date-Time (UTC): 2025-03-21 14:53:41
Location: ANDREANOF ISLANDS, ALEUTIAN IS.
Latitude, Longitude: 51.156 °, -176.070 °
Magnitude: 6.2 mww (us)
Depth: 17.0 km
Author: us,at,usauto,ak
Catalog, Contributor: NEIC PDE, us
Related Products:
CMT Details
Event ID C202503211453A
Timestamp: S-20250529235447
CMT Version: Final
NDK Version: V10
Reference Catalog: PDEW
Source Zero Trace
Moment Rate Fn: TRIHD
Half Duration: 3.0
Depth Determination: FREE
Scalar Moment 2.442 e+25 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 25, Units: dyne-cm)
ComponentValueError
Mrr1.730.015
Mtt-1.60.012
Mpp-0.130.01
Mrt1.40.032
Mrp0.9340.03
Mtp-0.5880.008
Principal Axes (Length Exponent: 25, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T316672.431
N6470.021
P15722-2.452
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP126124108
NP2616782
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves16036140
Mantle Waves139211125
Surface Waves16339850
Event Location
Source NDK
PDEW 2025/03/21 14:53:41.8  51.16 -176.07  17.0 0.0 6.2 ANDREANOF ISLANDS, ALEUT
C202503211453A   B:160  361  40 S:163  398  50 M:139  211 125 CMT: 1 TRIHD:  3.0
CENTROID:      5.1 0.1  51.18 0.00 -176.06 0.01  18.5  0.2 FREE S-20250529235447
25  1.730 0.015 -1.600 0.012 -0.130 0.010  1.400 0.032  0.934 0.030 -0.588 0.008
V10   2.431 67 316   0.021  7  64  -2.452 22 157   2.442 261 24  108  61 67   82
Other Formats
Other Products For This Event
Product TypeDescriptionOrganization
Global ShakeMovie syntheticGlobal ShakeMovie synthetic for MW 6.2 ANDREANOF ISLANDS, ALEUTIAN IS.IRIS
Surface-Wave Radiation PatternsSurface-Wave Radiation Patterns for MW 6.2 ANDREANOF ISLANDS, ALEUTIAN IS.Incorporated Research Institutions for Seismology
GMVGMV for mww 6.2 ANDREANOF ISLANDS, ALEUTIAN IS.Incorporated Research Institutions for Seismology
Event PlotsEvent Plots for mww 6.2 ANDREANOF ISLANDS, ALEUTIAN IS.Incorporated Research Institutions for Seismology
Contributions