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/22300564

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 7.4 (GCMT) TAIWAN icon
Centroid Event
Date-Time (UTC): 2024-04-02 23:58:23
Location: TAIWAN
Latitude, Longitude: 23.940 °, 121.790 °
Magnitude: 7.4 MW
Depth: 32.4 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Event
Date-Time (UTC): 2024-04-02 23:58:12
Location: TAIWAN
Latitude, Longitude: 23.832 °, 121.604 °
Magnitude: 7.4 mww (us)
Depth: 40.0 km
Author: pt,us,pt,at,pt,usauto
Catalog, Contributor: NEIC PDE, us
Related Products:
CMT Details
Event ID C202404022358B
Timestamp: S-20240629203632
CMT Version: Final
NDK Version: V10
Reference Catalog: PDEW
Source Zero Trace
Moment Rate Fn: TRIHD
Half Duration: 11.8
Depth Determination: FREE
Scalar Moment 1.426 e+27 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 27, Units: dyne-cm)
ComponentValueError
Mrr1.20.004
Mtt-0.2870.002
Mpp-0.9140.003
Mrt-0.0150.016
Mrp0.6210.016
Mtp-0.6860.002
Principal Axes (Length Exponent: 27, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T246711.394
N27150.062
P12011-1.457
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP122836115
NP2185873
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves17448050
Mantle Waves172457150
Surface Waves17543350
Event Location
Source NDK
PDEW 2024/04/02 23:58:12.2  23.83  121.60  40.0 0.0 7.4 TAIWAN                  
C202404022358B   B:174  480  50 S:175  433  50 M:172  457 150 CMT: 1 TRIHD: 11.8
CENTROID:     11.1 0.1  23.94 0.00  121.79 0.00  32.4  0.2 FREE S-20240629203632
27  1.200 0.004 -0.287 0.002 -0.914 0.003 -0.015 0.016  0.621 0.016 -0.686 0.002
V10   1.394 71 246   0.062 15  27  -1.457 11 120   1.426 228 36  115  18 58   73
Other Formats
Other Products For This Event
Product TypeDescriptionOrganization
Global ShakeMovie syntheticGlobal ShakeMovie synthetic for MW 7.4 TAIWANIRIS
Surface-Wave Radiation PatternsSurface-Wave Radiation Patterns for MW 7.4 TAIWANIncorporated Research Institutions for Seismology
GMVGMV for mww 7.4 TAIWANIncorporated Research Institutions for Seismology
Event PlotsEvent Plots for mww 7.4 TAIWANIncorporated Research Institutions for Seismology
AftershocksAftershocks for mww 7.4 TAIWANIRIS DMC
EQ EnergyEQ Energy for mww 7.4 TAIWANIncorporated Research Institutions for Seismology
Back ProjectionsBack Projections for mww 7.4 TAIWANIRIS DMC
Contributions