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/18722251

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 6.9 (GCMT) SOUTH SHETLAND ISLANDS (Inactive) icon
Centroid Event
Date-Time (UTC): 2021-01-23 23:37:00
Location: SOUTH SHETLAND ISLANDS
Latitude, Longitude: -61.880 °, -55.350 °
Magnitude: 6.9 MW
Depth: 12.0 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Event
Date-Time (UTC): 2021-01-23 23:36:50
Location: SOUTH SHETLAND ISLANDS
Latitude, Longitude: -61.812 °, -55.490 °
Magnitude: 6.9 mww (us)
Depth: 9.8 km
Author: us,at,pt,usauto
Catalog, Contributor: NEIC PDE, us
Related Products:
CMT Details
Event ID C202101232336A
Timestamp: Q-20210124124121
CMT Version: Quick
NDK Version: V10
Reference Catalog: PDEW
Source Zero Trace
Moment Rate Fn: TRIHD
Half Duration: 7.0
Depth Determination: FIX
Scalar Moment 2.957 e+26 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 26, Units: dyne-cm)
ComponentValueError
Mrr-2.320.009
Mtt0.6160.008
Mpp1.70.009
Mrt0.7280.028
Mrp-0.2510.03
Mtp2.030.007
Principal Axes (Length Exponent: 26, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T30833.27
N3923-0.63
P21267-2.644
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP11647-123
NP223952-60
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves14033850
Mantle Waves138339125
Surface Waves13634850
Event Location
Source NDK
PDEW 2021/01/23 23:36:50.8 -61.83  -55.49   9.6 0.0 6.9 SOUTH SHETLAND ISLANDS  
C202101232336A   B:140  338  50 S:136  348  50 M:138  339 125 CMT: 1 TRIHD:  7.0
CENTROID:     10.0 0.0 -61.88 0.00  -55.35 0.01  12.0  0.0 FIX  Q-20210124124121
26 -2.320 0.009  0.616 0.008  1.700 0.009  0.728 0.028 -0.251 0.030  2.030 0.007
V10   3.270  3 308  -0.630 23  39  -2.644 67 212   2.957  16 47 -123 239 52  -60
Other Formats
Other Products For This Event
Product TypeDescriptionOrganization
Moment TensorMoment Tensor for MW 6.9 (GCMT) SOUTH SHETLAND ISLANDSIRIS DMC
Global ShakeMovie syntheticGlobal ShakeMovie synthetic for MW 6.9 SOUTH SHETLAND ISLANDSIRIS
Event PlotsEvent Plots for mww 7.0 SOUTH SHETLAND ISLANDSIncorporated Research Institutions for Seismology
Surface-Wave Radiation PatternsSurface-Wave Radiation Patterns for MW 6.9 SOUTH SHETLAND ISLANDSIncorporated Research Institutions for Seismology
Back ProjectionsBack Projections for mww 7.0 SOUTH SHETLAND ISLANDSIncorporated Research Institutions for Seismology
Source Time FunctionSource Time Function for mww 7.0 SOUTH SHETLAND ISLANDSIncorporated Research Institutions for Seismology
EQ EnergyEQ Energy for mww 7.0 SOUTH SHETLAND ISLANDSIncorporated Research Institutions for Seismology
GMVGMV for mww 7.0 SOUTH SHETLAND ISLANDSIncorporated Research Institutions for Seismology
Contributions