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/19331931

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) QINGHAI, CHINA icon
Centroid Event
Date-Time (UTC): 2021-05-21 18:04:29
Location: QINGHAI, CHINA
Latitude, Longitude: 34.660 °, 98.460 °
Magnitude: 7.4 MW
Depth: 12.0 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Event
Date-Time (UTC): 2021-05-21 18:04:13
Location: QINGHAI, CHINA
Latitude, Longitude: 34.588 °, 98.240 °
Magnitude: 7.3 Mww (us)
Depth: 10.0 km
Author: us,usauto,pt,at
Catalog, Contributor: NEIC PDE, us
Related Products:
CMT Details
Event ID C202105211804A
Timestamp: S-20210730004733
CMT Version: Final
NDK Version: V10
Reference Catalog: PDEW
Source Zero Trace
Moment Rate Fn: TRIHD
Half Duration: 12.4
Depth Determination: FIX
Scalar Moment 1.664 e+27 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 27, Units: dyne-cm)
ComponentValueError
Mrr-0.2060.004
Mtt0.8210.004
Mpp-0.6150.004
Mrt0.1550.042
Mrp-0.080.041
Mtp1.490.003
Principal Axes (Length Exponent: 27, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T32831.761
N8083-0.193
P2386-1.568
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP11384-177
NP228387-6
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves17445550
Mantle Waves175470150
Surface Waves17544750
Event Location
Source NDK
PDEW 2021/05/21 18:04:13.6  34.59   98.24  10.0 0.0 7.3 QINGHAI, CHINA          
C202105211804A   B:174  455  50 S:175  447  50 M:175  470 150 CMT: 1 TRIHD: 12.4
CENTROID:     15.6 0.1  34.66 0.00   98.46 0.01  12.0  0.0 FIX  S-20210730004733
27 -0.206 0.004  0.821 0.004 -0.615 0.004  0.155 0.042 -0.080 0.041  1.490 0.003
V10   1.761  3 328  -0.193 83  80  -1.568  6 238   1.664  13 84 -177 283 87   -6
Other Formats
Other Products For This Event
Product TypeDescriptionOrganization
Global ShakeMovie syntheticGlobal ShakeMovie synthetic for MW 7.4 QINGHAI, CHINAIRIS
EQ EnergyEQ Energy for Mww 7.3 QINGHAI, CHINAIncorporated Research Institutions for Seismology
Source Time FunctionSource Time Function for Mww 7.3 QINGHAI, CHINAIncorporated Research Institutions for Seismology
Back ProjectionsBack Projections for Mww 7.3 QINGHAI, CHINAIncorporated Research Institutions for Seismology
GMVGMV for Mww 7.3 QINGHAI, CHINAIncorporated Research Institutions for Seismology
Event PlotsEvent Plots for Mww 7.3 QINGHAI, CHINAIncorporated Research Institutions for Seismology
Surface-Wave Radiation PatternsSurface-Wave Radiation Patterns for MW 7.4 QINGHAI, CHINAIncorporated Research Institutions for Seismology
AftershocksAftershocks for Mww 7.3 QINGHAI, CHINAIRIS DMC
Contributions