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 7.1 (GCMT) XIZANG icon
Centroid Event
Date-Time (UTC): 2025-01-07 01:05:26
Location: XIZANG
Latitude, Longitude: 28.570 °, 87.450 °
Magnitude: 7.1 MW
Depth: 12.0 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Event
Date-Time (UTC): 2025-01-07 01:05:16
Location: XIZANG
Latitude, Longitude: 28.573 °, 87.375 °
Magnitude: 7.1 mww (us)
Depth: 10.0 km
Author: us,usauto,pt
Catalog, Contributor: NEIC PDE, us
Related Products:
CMT Details
Event ID C202501070105A
Timestamp: S-20250331214834
CMT Version: Final
NDK Version: V10
Reference Catalog: PDEW
Source Zero Trace
Moment Rate Fn: TRIHD
Half Duration: 8.5
Depth Determination: FIX
Scalar Moment 5.283 e+26 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 26, Units: dyne-cm)
ComponentValueError
Mrr-5.050.013
Mtt-0.3760.012
Mpp5.420.012
Mrt-0.3320.101
Mrp0.2740.092
Mtp-0.5830.011
Principal Axes (Length Exponent: 26, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T26425.487
N1744-0.414
P1886-5.079
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP135843-85
NP217147-95
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves16142050
Mantle Waves169423150
Surface Waves17046650
Event Location
Source NDK
PDEW 2025/01/07 01:05:16.7  28.60   87.38  10.0 0.0 7.1 XIZANG                  
C202501070105A   B:161  420  50 S:170  466  50 M:169  423 150 CMT: 1 TRIHD:  8.5
CENTROID:      9.9 0.1  28.57 0.01   87.45 0.00  12.0  0.0 FIX  S-20250331214834
26 -5.050 0.013 -0.376 0.012  5.420 0.012 -0.332 0.101  0.274 0.092 -0.583 0.011
V10   5.487  2 264  -0.414  4 174  -5.079 86  18   5.283 358 43  -85 171 47  -95
Other Formats
Other Products For This Event
Product TypeDescriptionOrganization
Global ShakeMovie syntheticGlobal ShakeMovie synthetic for MW 7.1 XIZANGIRIS
AftershocksAftershocks for mww 7.1 XIZANGIRIS DMC
Surface-Wave Radiation PatternsSurface-Wave Radiation Patterns for MW 7.1 XIZANGIncorporated Research Institutions for Seismology
EQ EnergyEQ Energy for mww 7.1 XIZANGIncorporated Research Institutions for Seismology
Back ProjectionsBack Projections for mww 7.1 XIZANGIRIS DMC
GMVGMV for mww 7.1 XIZANGIncorporated Research Institutions for Seismology
Event PlotsEvent Plots for mww 7.1 XIZANGIncorporated Research Institutions for Seismology
Contributions