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/19515374

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 8.2 (GCMT) ALASKA PENINSULA icon
Centroid Event
Date-Time (UTC): 2021-07-29 06:16:20
Location: ALASKA PENINSULA
Latitude, Longitude: 55.400 °, -157.320 °
Magnitude: 8.2 MW
Depth: 29.6 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Event
Date-Time (UTC): 2021-07-29 06:15:49
Location: ALASKA PENINSULA
Latitude, Longitude: 55.364 °, -157.888 °
Magnitude: 8.2 Mww (us)
Depth: 35.0 km
Author: us,ak,at,pt,usauto
Catalog, Contributor: NEIC PDE, ak
Related Products:
CMT Details
Event ID C202107290615A
Timestamp: S-20210929011203
CMT Version: Final
NDK Version: V10
Reference Catalog: PDEW
Source Zero Trace
Moment Rate Fn: TRIHD
Half Duration: 32.4
Depth Determination: FREE
Scalar Moment 2.946 e+28 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 28, Units: dyne-cm)
ComponentValueError
Mrr1.030.003
Mtt-0.7690.002
Mpp-0.260.002
Mrt2.390.04
Mrp1.370.03
Mtp-0.4820.001
Principal Axes (Length Exponent: 28, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T331552.932
N24000.03
P15035-2.961
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP12381088
NP2608090
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves16842850
Mantle Waves174504200
Surface Waves11827250
Event Location
Source NDK
PDEW 2021/07/29 06:15:48.2  55.39 -157.89  30.0 0.0 8.2 ALASKA PENINSULA        
C202107290615A   B:168  428  50 S:118  272  50 M:174  504 200 CMT: 1 TRIHD: 32.4
CENTROID:     32.0 0.1  55.40 0.01 -157.32 0.01  29.6  0.3 FREE S-20210929011203
28  1.030 0.003 -0.769 0.002 -0.260 0.002  2.390 0.040  1.370 0.030 -0.482 0.001
V10   2.932 55 331   0.030  0 240  -2.961 35 150   2.946 238 10   88  60 80   90
Other Formats
Other Products For This Event
Product TypeDescriptionOrganization
Global ShakeMovie syntheticGlobal ShakeMovie synthetic for MW 8.2 ALASKA PENINSULAIRIS
Back ProjectionsBack Projections for Mww 8.2 ALASKA PENINSULAIncorporated Research Institutions for Seismology
EQ EnergyEQ Energy for Mww 8.2 ALASKA PENINSULAIncorporated Research Institutions for Seismology
Event PlotsEvent Plots for Mww 8.2 ALASKA PENINSULAIncorporated Research Institutions for Seismology
GMVGMV for Mww 8.2 ALASKA PENINSULAIncorporated Research Institutions for Seismology
Surface-Wave Radiation PatternsSurface-Wave Radiation Patterns for MW 8.2 ALASKA PENINSULAIncorporated Research Institutions for Seismology
AftershocksAftershocks for Mww 8.2 ALASKA PENINSULAIRIS DMC
Contributions