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

When citing this Moment Tensor page please use the Digital Object Identifier (DOI):

doi:10.17611/DP/21395639

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 7.2 (GCMT) SOUTHEAST OF LOYALTY ISLANDS icon
Centroid Event
Date-Time (UTC): 2023-05-20 01:51:07
Location: SOUTHEAST OF LOYALTY ISLANDS
Latitude, Longitude: -23.040 °, 170.330 °
Magnitude: 7.2 MW
Depth: 16.6 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Event
Date-Time (UTC): 2023-05-20 01:50:58
Location: SOUTHEAST OF LOYALTY ISLANDS
Latitude, Longitude: -23.048 °, 170.511 °
Magnitude: 7.1 mww (us)
Depth: 25.807 km
Author: pt,us,at,usauto
Catalog, Contributor: NEIC PDE, us
Related Products:
CMT Details
Event ID C202305200151A
Timestamp: S-20230730002042
CMT Version: Final
NDK Version: V10
Reference Catalog: PDEW
Source Zero Trace
Moment Rate Fn: TRIHD
Half Duration: 9.4
Depth Determination: FREE
Scalar Moment 7.151 e+26 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 26, Units: dyne-cm)
ComponentValueError
Mrr-6.370.022
Mtt6.760.017
Mpp-0.3910.015
Mrt1.650.105
Mrp-1.690.117
Mtp-1.580.012
Principal Axes (Length Exponent: 26, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T1387.378
N10512-0.456
P24876-6.923
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP19038-109
NP229354-76
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves16945050
Mantle Waves167442150
Surface Waves16944850
Event Location
Source NDK
PDEW 2023/05/20 01:50:59.2 -23.04  170.56  27.3 0.0 7.1 SOUTHEAST OF LOYALTY ISL
C202305200151A   B:169  450  50 S:169  448  50 M:167  442 150 CMT: 1 TRIHD:  9.4
CENTROID:      8.4 0.1 -23.04 0.00  170.33 0.00  16.6  0.2 FREE S-20230730002042
26 -6.370 0.022  6.760 0.017 -0.391 0.015  1.650 0.105 -1.690 0.117 -1.580 0.012
V10   7.378  8  13  -0.456 12 105  -6.923 76 248   7.151  90 38 -109 293 54  -76
Other Formats
Other Products For This Event
Product TypeDescriptionOrganization
Global ShakeMovie syntheticGlobal ShakeMovie synthetic for MW 7.2 SOUTHEAST OF LOYALTY ISLANDSIRIS
AftershocksAftershocks for mww 7.1 SOUTHEAST OF LOYALTY ISLANDSIRIS DMC
Back ProjectionsBack Projections for mww 7.1 SOUTHEAST OF LOYALTY ISLANDSIRIS DMC
Surface-Wave Radiation PatternsSurface-Wave Radiation Patterns for MW 7.2 SOUTHEAST OF LOYALTY ISLANDSIncorporated Research Institutions for Seismology
EQ EnergyEQ Energy for mww 7.1 SOUTHEAST OF LOYALTY ISLANDSIncorporated Research Institutions for Seismology
Event PlotsEvent Plots for mww 7.1 SOUTHEAST OF LOYALTY ISLANDSIncorporated Research Institutions for Seismology
GMVGMV for mww 7.1 SOUTHEAST OF LOYALTY ISLANDSIncorporated Research Institutions for Seismology
Contributions