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/864935

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 6.9 (GCMT) TONGA ISLANDS icon
Centroid Event
Date-Time (UTC): 1989-03-11 05:05:10
Location: TONGA ISLANDS
Latitude, Longitude: -17.780 °, -174.770 °
Magnitude: 6.9 MW
Depth: 244.0 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Event
No updated event details available
CMT Details
Event ID C031189B
Timestamp: O-00000000000000
CMT Version: Final
NDK Version: V10
Reference Catalog: PDE
Source Zero Trace
Moment Rate Fn: BOXHD
Half Duration: 10.0
Depth Determination: FREE
Scalar Moment 2.49 e+26 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 26, Units: dyne-cm)
ComponentValueError
Mrr0.7150.018
Mtt0.1880.033
Mpp-0.9040.032
Mrt1.2050.022
Mrp1.9510.024
Mtp0.7070.024
Principal Axes (Length Exponent: 26, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T315472.77
N19922-0.56
P9334-2.21
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP11282318
NP22283112
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves133445
Mantle Waves1638135
Surface Waves000
Event Location
Source NDK
PDE  1989/03/11 05:04:54.7 -17.72 -174.81 178.0 6.3 0.0 TONGA ISLANDS           
C031189B         B: 13   34  45 S:  0    0   0 M: 16   38 135 CMT: 1 BOXHD: 10.0
CENTROID:     15.9 0.1 -17.78 0.02 -174.77 0.01 244.0  0.6 FREE O-00000000000000
26  0.715 0.018  0.188 0.033 -0.904 0.032  1.205 0.022  1.951 0.024  0.707 0.024
V10   2.770 47 315  -0.560 22 199  -2.210 34  93   2.490 128 23   18  22 83  112
Other Formats
Other Products For This Event
Product TypeDescriptionOrganization
Surface-Wave Radiation PatternsSurface-Wave Radiation Patterns for MW 6.9 TONGA ISLANDSIRIS DMC
Contributions