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/16325334

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 7.9 (GCMT) GULF OF ALASKA (Inactive) icon
Centroid Event
Date-Time (UTC): 2018-01-23 09:32:01
Location: GULF OF ALASKA
Latitude, Longitude: 56.120 °, -149.180 °
Magnitude: 7.9 MW
Depth: 34.5 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Event
Date-Time (UTC): 2018-01-23 09:31:42
Location: GULF OF ALASKA
Latitude, Longitude: 56.046 °, -149.073 °
Magnitude: 7.9 Mww (us)
Depth: 25.0 km
Author: ak,us,at,pt,ak
Catalog, Contributor: NEIC PDE, us
Related Products:
CMT Details
Event ID C201801230931A
Timestamp: Q-20180123080228
CMT Version: Quick
NDK Version: V10
Reference Catalog: PDEQ
Source Zero Trace
Moment Rate Fn: TRIHD
Half Duration: 22.2
Depth Determination: FREE
Scalar Moment 0.945 e+28 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 28, Units: dyne-cm)
ComponentValueError
Mrr0.250.002
Mtt-0.510.002
Mpp0.260.002
Mrt0.0180.011
Mrp-0.2830.011
Mtp0.8020.002
Principal Axes (Length Exponent: 28, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T120210.854
N322670.182
P2138-1.037
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP12597010
NP216581159
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves15839850
Mantle Waves162451150
Surface Waves15340350
Event Location
Source NDK
PDEQ 2018/01/23 09:31:42.9  56.05 -149.07  25.0 0.0 7.9 GULF OF ALASKA          
C201801230931A   B:158  398  50 S:153  403  50 M:162  451 150 CMT: 1 TRIHD: 22.2
CENTROID:     18.6 0.1  56.12 0.00 -149.18 0.01  34.5  0.3 FREE Q-20180123080228
28  0.250 0.002 -0.510 0.002  0.260 0.002  0.018 0.011 -0.283 0.011  0.802 0.002
V10   0.854 21 120   0.182 67 322  -1.037  8 213   0.945 259 70   10 165 81  159
Other Formats
Other Products For This Event
Product TypeDescriptionOrganization
Moment TensorMoment Tensor for MW 7.9 (GCMT) GULF OF ALASKAIRIS DMC
Global ShakeMovie syntheticGlobal ShakeMovie synthetic for MW 7.9 GULF OF ALASKAIRIS
EQ EnergyEQ Energy for Mww 7.9 GULF OF ALASKAIRIS DMC
Source Time FunctionSource Time Function for Mww 7.9 GULF OF ALASKAIRIS DMC
Back ProjectionsBack Projections for Mww 7.9 GULF OF ALASKAIRIS DMC
Event PlotsEvent Plots for Mww 7.9 GULF OF ALASKAIRIS DMC
AftershocksAftershocks for Mww 7.9 GULF OF ALASKAIRIS DMC
GMVGMV for Mww 7.9 GULF OF ALASKAIRIS DMC
Surface-Wave Radiation PatternsSurface-Wave Radiation Patterns for MW 7.9 GULF OF ALASKAIRIS DMC
Contributions