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/875220

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 7.1 (GCMT) SOUTH SANDWICH ISLANDS REGION icon
Centroid Event
Date-Time (UTC): 1991-12-27 04:06:11
Location: SOUTH SANDWICH ISLANDS REGION
Latitude, Longitude: -55.910 °, -24.480 °
Magnitude: 7.1 MW
Depth: 15.0 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Event
No updated event details available
CMT Details
Event ID C122791C
Timestamp: O-00000000000000
CMT Version: Final
NDK Version: V10
Reference Catalog: PDE
Source Zero Trace
Moment Rate Fn: BOXHD
Half Duration: 14.5
Depth Determination: BDY
Scalar Moment 6.02 e+26 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 26, Units: dyne-cm)
ComponentValueError
Mrr-4.5650.036
Mtt1.4180.036
Mpp3.1470.029
Mrt-1.8060.134
Mrp2.260.134
Mtp-3.6130.029
Principal Axes (Length Exponent: 26, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T232146.74
N1420-1.43
P5176-5.31
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP132231-90
NP214159-90
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves297445
Mantle Waves1946135
Surface Waves000
Event Location
Source NDK
PDE  1991/12/27 04:06:01.4 -56.04  -25.33  33.0 6.2 7.1 SOUTH SANDWICH ISLANDS  
C122791C         B: 29   74  45 S:  0    0   0 M: 19   46 135 CMT: 1 BOXHD: 14.5
CENTROID:     10.4 0.1 -55.91 0.01  -24.48 0.02  15.0  0.0 BDY  O-00000000000000
26 -4.565 0.036  1.418 0.036  3.147 0.029 -1.806 0.134  2.260 0.134 -3.613 0.029
V10   6.740 14 232  -1.430  0 142  -5.310 76  51   6.020 322 31  -90 141 59  -90
Other Formats
Other Products For This Event
Product TypeDescriptionOrganization
Surface-Wave Radiation PatternsSurface-Wave Radiation Patterns for MW 7.1 SOUTH SANDWICH ISLANDS REGIONIRIS DMC
Source Time FunctionSource Time Function for mw 7.1 SOUTH SANDWICH ISLANDS REGIONIRIS DMC
AftershocksAftershocks for mw 7.1 SOUTH SANDWICH ISLANDS REGIONIRIS DMC
Contributions