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/727633

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 8.6 (GCMT) OFF W COAST OF NORTHERN SUMATRA icon
Centroid Event
Date-Time (UTC): 2012-04-11 08:39:31
Location: OFF W COAST OF NORTHERN SUMATRA
Latitude, Longitude: 2.350 °, 92.820 °
Magnitude: 8.6 MW
Depth: 45.6 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Event
No updated event details available
CMT Details
Event ID C201204110838A
Timestamp: S-20120710025239
CMT Version: Final
NDK Version: V10
Reference Catalog: PDEW
Source Zero Trace
Moment Rate Fn: TRIHD
Half Duration: 47.3
Depth Determination: FREE
Scalar Moment 0.914 e+29 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 29, Units: dyne-cm)
ComponentValueError
Mrr0.1320.006
Mtt-0.6190.004
Mpp0.4870.004
Mrt-0.1750.023
Mrp0.1040.024
Mtp-0.6950.003
Principal Axes (Length Exponent: 29, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T243130.862
N88750.104
P3356-0.966
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP120765
NP228985166
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves283950
Mantle Waves148376200
Surface Waves9717450
Event Location
Source NDK
PDEW 2012/04/11 08:38:36.7   2.33   93.06  20.0 7.4 8.6 OFF W COAST OF NORTHERN 
C201204110838A   B: 28   39  50 S: 97  174  50 M:148  376 200 CMT: 1 TRIHD: 47.3
CENTROID:     54.7 0.2   2.35 0.01   92.82 0.01  45.6  1.0 FREE S-20120710025239
29  0.132 0.006 -0.619 0.004  0.487 0.004 -0.175 0.023  0.104 0.024 -0.695 0.003
V10   0.862 13 243   0.104 75  88  -0.966  6 335   0.914  20 76    5 289 85  166
Other Formats
Other Products For This Event
Product TypeDescriptionOrganization
Global ShakeMovie syntheticGlobal ShakeMovie synthetic for MW 8.6 OFF W COAST OF NORTHERN SUMATRAIRIS
Global ShakeMovie syntheticGlobal ShakeMovie synthetic for MW 8.6 OFF W COAST OF NORTHERN SUMATRAIRIS
AftershocksAftershocks for MW 8.7 OFF W COAST OF NORTHERN SUMATERAIRIS DMC
Event PlotsEvent Plots for MW 8.7 OFF W COAST OF NORTHERN SUMATERAIRIS DMC
GMVGMV for MW 8.7 OFF W COAST OF NORTHERN SUMATERAIRIS DMC
Source Time FunctionSource Time Function for MW 8.7 OFF W COAST OF NORTHERN SUMATERAIRIS DMC
EQ EnergyEQ Energy for MW 8.7 OFF W COAST OF NORTHERN SUMATERAIRIS DMC
Back ProjectionsBack Projections for MW 8.7 OFF W COAST OF NORTHERN SUMATERAIRIS DMC
Surface-Wave Radiation PatternsSurface-Wave Radiation Patterns for MW 8.6 OFF W COAST OF NORTHERN SUMATRAIRIS DMC
Contributions