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/21504064

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 7.2 (GCMT) ALASKA PENINSULA icon
Centroid Event
Date-Time (UTC): 2023-07-16 06:48:30
Location: ALASKA PENINSULA
Latitude, Longitude: 54.440 °, -160.900 °
Magnitude: 7.2 MW
Depth: 31.9 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Event
Date-Time (UTC): 2023-07-16 06:48:21
Location: ALASKA PENINSULA
Latitude, Longitude: 54.392 °, -160.761 °
Magnitude: 7.2 mww (us)
Depth: 25.0 km
Author: at,us,pt,usauto,ak
Catalog, Contributor: NEIC PDE, us
Related Products:
CMT Details
Event ID C202307160648A
Timestamp: S-20230928224652
CMT Version: Final
NDK Version: V10
Reference Catalog: PDEW
Source Zero Trace
Moment Rate Fn: TRIHD
Half Duration: 9.4
Depth Determination: FREE
Scalar Moment 7.229 e+26 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 26, Units: dyne-cm)
ComponentValueError
Mrr4.30.016
Mtt-3.660.012
Mpp-0.6420.011
Mrt5.110.072
Mrp2.750.06
Mtp-1.560.007
Principal Axes (Length Exponent: 26, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T329637.23
N643-0.005
P15527-7.228
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP12511898
NP2637287
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves16947450
Mantle Waves168432150
Surface Waves16642950
Event Location
Source NDK
PDEW 2023/07/16 06:48:21.2  54.39 -160.76  25.0 0.0 7.2 ALASKA PENINSULA        
C202307160648A   B:169  474  50 S:166  429  50 M:168  432 150 CMT: 1 TRIHD:  9.4
CENTROID:      9.2 0.1  54.44 0.00 -160.90 0.01  31.9  0.3 FREE S-20230928224652
26  4.300 0.016 -3.660 0.012 -0.642 0.011  5.110 0.072  2.750 0.060 -1.560 0.007
V10   7.230 63 329  -0.005  3  64  -7.228 27 155   7.229 251 18   98  63 72   87
Other Formats
Other Products For This Event
Product TypeDescriptionOrganization
Global ShakeMovie syntheticGlobal ShakeMovie synthetic for MW 7.2 ALASKA PENINSULAIRIS
AftershocksAftershocks for mww 7.2 ALASKA PENINSULAIRIS DMC
Back ProjectionsBack Projections for mww 7.2 ALASKA PENINSULAIRIS DMC
Surface-Wave Radiation PatternsSurface-Wave Radiation Patterns for MW 7.2 ALASKA PENINSULAIncorporated Research Institutions for Seismology
Event PlotsEvent Plots for mww 7.2 ALASKA PENINSULAIncorporated Research Institutions for Seismology
GMVGMV for mww 7.2 ALASKA PENINSULAIncorporated Research Institutions for Seismology
Contributions