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/934870

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 4.9 (GCMT) SOUTH GEORGIA ISLAND REGION icon
Centroid Event
Date-Time (UTC): 2004-08-21 06:02:58
Location: SOUTH GEORGIA ISLAND REGION
Latitude, Longitude: -54.990 °, -33.540 °
Magnitude: 4.9 MW
Depth: 23.8 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Event
No updated event details available
CMT Details
Event ID C082104B
Timestamp: O-00000000000000
CMT Version: Final
NDK Version: V10
Reference Catalog: PDE
Source Zero Trace
Moment Rate Fn: TRIHD
Half Duration: 0.7
Depth Determination: FREE
Scalar Moment 2.716 e+23 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 23, Units: dyne-cm)
ComponentValueError
Mrr1.910.244
Mtt-1.230.16
Mpp-0.680.134
Mrt-0.9450.236
Mrp1.360.209
Mtp1.390.1
Principal Axes (Length Exponent: 23, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T253692.527
N135100.379
P4219-2.906
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP11152867
NP232164102
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves162040
Mantle Waves000
Surface Waves303650
Event Location
Source NDK
PDE  2004/08/21 06:02:52.0 -55.00  -33.59  10.0 5.0 0.0 SOUTH GEORGIA ISLAND REG
C082104B         B: 16   20  40 S: 30   36  50 M:  0    0   0 CMT: 1 TRIHD:  0.7
CENTROID:      6.4 0.5 -54.99 0.05  -33.54 0.05  23.8  2.2 FREE O-00000000000000
23  1.910 0.244 -1.230 0.160 -0.680 0.134 -0.945 0.236  1.360 0.209  1.390 0.100
V10   2.527 69 253   0.379 10 135  -2.906 19  42   2.716 115 28   67 321 64  102
Other Formats
Contributions