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/875255

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) SOUTH SANDWICH ISLANDS REGION icon
Centroid Event
Date-Time (UTC): 1991-12-28 15:59:53
Location: SOUTH SANDWICH ISLANDS REGION
Latitude, Longitude: -56.370 °, -25.270 °
Magnitude: 5.5 MW
Depth: 15.0 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Event
No updated event details available
CMT Details
Event ID B122891L
Timestamp: O-00000000000000
CMT Version: Final
NDK Version: V10
Reference Catalog: PDE
Source Zero Trace
Moment Rate Fn: BOXHD
Half Duration: 2.0
Depth Determination: FIX
Scalar Moment 1.89 e+24 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 24, Units: dyne-cm)
ComponentValueError
Mrr1.2280.058
Mtt-0.2290.064
Mpp-0.9980.061
Mrt-0.1590.127
Mrp1.270.179
Mtp0.8150.065
Principal Axes (Length Exponent: 24, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T283641.82
N159160.13
P6321-1.95
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP11272855
NP234668107
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves213845
Mantle Waves000
Surface Waves000
Event Location
Source NDK
PDE  1991/12/28 15:59:44.5 -56.57  -25.23  33.0 5.1 5.1 SOUTH SANDWICH ISLANDS  
B122891L         B: 21   38  45 S:  0    0   0 M:  0    0   0 CMT: 1 BOXHD:  2.0
CENTROID:      9.1 0.4 -56.37 0.05  -25.27 0.10  15.0  0.0 FIX  O-00000000000000
24  1.228 0.058 -0.229 0.064 -0.998 0.061 -0.159 0.127  1.270 0.179  0.815 0.065
V10   1.820 64 283   0.130 16 159  -1.950 21  63   1.890 127 28   55 346 68  107
Other Formats
Contributions