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/18773047

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 7.6 (GCMT) SOUTH OF ALASKA icon
Centroid Event
Date-Time (UTC): 2020-10-19 20:55:00
Location: SOUTH OF ALASKA
Latitude, Longitude: 54.480 °, -159.700 °
Magnitude: 7.6 MW
Depth: 37.4 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Event
Date-Time (UTC): 2020-10-19 20:54:39
Location: SOUTH OF ALASKA
Latitude, Longitude: 54.609 °, -159.652 °
Magnitude: 7.6 Mww (us)
Depth: 31.08 km
Author: at,us,pt,ak
Catalog, Contributor: NEIC PDE, us
Related Products:
CMT Details
Event ID C202010192054A
Timestamp: S-20201229231605
CMT Version: Final
NDK Version: V10
Reference Catalog: PDEW
Source Zero Trace
Moment Rate Fn: TRIHD
Half Duration: 15.1
Depth Determination: FREE
Scalar Moment 2.947 e+27 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 27, Units: dyne-cm)
ComponentValueError
Mrr0.0530.006
Mtt-0.5160.005
Mpp0.4630.005
Mrt1.870.038
Mrp0.6960.027
Mtp2.150.004
Principal Axes (Length Exponent: 27, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T315303.177
N8749-0.46
P20925-2.718
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP135049176
NP2838741
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves17747650
Mantle Waves175461150
Surface Waves17545450
Event Location
Source NDK
PDEW 2020/10/19 20:54:39.0  54.60 -159.62  29.1 0.0 7.6 SOUTH OF ALASKA         
C202010192054A   B:177  476  50 S:175  454  50 M:175  461 150 CMT: 1 TRIHD: 15.1
CENTROID:     21.6 0.1  54.48 0.00 -159.70 0.01  37.4  0.4 FREE S-20201229231605
27  0.053 0.006 -0.516 0.005  0.463 0.005  1.870 0.038  0.696 0.027  2.150 0.004
V10   3.177 30 315  -0.460 49  87  -2.718 25 209   2.947 350 49  176  83 87   41
Other Formats
Other Products For This Event
Product TypeDescriptionOrganization
Global ShakeMovie syntheticGlobal ShakeMovie synthetic for MW 7.6 SOUTH OF ALASKAIRIS
Back ProjectionsBack Projections for Mww 7.5 SOUTH OF ALASKAIncorporated Research Institutions for Seismology
Surface-Wave Radiation PatternsSurface-Wave Radiation Patterns for MW 7.6 SOUTH OF ALASKAIncorporated Research Institutions for Seismology
EQ EnergyEQ Energy for Mww 7.5 SOUTH OF ALASKAIncorporated Research Institutions for Seismology
Event PlotsEvent Plots for Mww 7.5 SOUTH OF ALASKAIncorporated Research Institutions for Seismology
GMVGMV for Mww 7.5 SOUTH OF ALASKAIncorporated Research Institutions for Seismology
AftershocksAftershocks for Mww 7.6 SOUTH OF ALASKAIRIS DMC
Contributions