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/974075

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 5.5 (GCMT) DRAKE PASSAGE icon
Centroid Event
Date-Time (UTC): 2008-08-31 01:15:26
Location: DRAKE PASSAGE
Latitude, Longitude: -61.180 °, -68.370 °
Magnitude: 5.5 MW
Depth: 12.5 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Event
No updated event details available
CMT Details
Event ID C200808310115A
Timestamp: S-20081126110942
CMT Version: Final
NDK Version: V10
Reference Catalog: PDEW
Source Zero Trace
Moment Rate Fn: TRIHD
Half Duration: 1.4
Depth Determination: FREE
Scalar Moment 2.613 e+24 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 24, Units: dyne-cm)
ComponentValueError
Mrr2.210.051
Mtt0.2990.039
Mpp-2.510.042
Mrt0.4220.117
Mrp-0.2690.101
Mtp1.110.033
Principal Axes (Length Exponent: 24, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T2782.299
N160110.626
P2504-2.926
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP135242106
NP21515076
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves6010340
Mantle Waves3844125
Surface Waves8714950
Event Location
Source NDK
PDEW 2008/08/31 01:15:25.2 -61.23  -67.74  10.0 5.6 5.5 DRAKE PASSAGE           
C200808310115A   B: 60  103  40 S: 87  149  50 M: 38   44 125 CMT: 1 TRIHD:  1.4
CENTROID:      1.4 0.1 -61.18 0.01  -68.37 0.02  12.5  0.6 FREE S-20081126110942
24  2.210 0.051  0.299 0.039 -2.510 0.042  0.422 0.117 -0.269 0.101  1.110 0.033
V10   2.299 78   2   0.626 11 160  -2.926  4 250   2.613 352 42  106 151 50   76
Other Formats
Contributions