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/9584205

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 5.0 (GCMT) TONGA ISLANDS REGION icon
Centroid Event
Date-Time (UTC): 2014-02-17 12:12:09
Location: TONGA ISLANDS REGION
Latitude, Longitude: -17.780 °, -172.690 °
Magnitude: 5.0 MW
Depth: 16.9 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Event
Date-Time (UTC): 2014-02-17 12:12:05
Location: TONGA ISLANDS
Latitude, Longitude: -17.988 °, -173.083 °
Magnitude: 4.9 mb (null)
Depth: 28.06 km
Author: us
Catalog, Contributor: NEIC PDE, us
CMT Details
Event ID C201402171212A
Timestamp: S-20140518043440
CMT Version: Final
NDK Version: V10
Reference Catalog: PDEW
Source Zero Trace
Moment Rate Fn: TRIHD
Half Duration: 0.8
Depth Determination: FREE
Scalar Moment 4.467 e+23 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 23, Units: dyne-cm)
ComponentValueError
Mrr3.850.144
Mtt-0.5770.1
Mpp-3.270.101
Mrt1.230.257
Mrp1.530.225
Mtp-1.80.057
Principal Axes (Length Exponent: 23, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T321764.326
N20950.285
P11813-4.608
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP12003380
NP2325896
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves628440
Mantle Waves000
Surface Waves10215150
Event Location
Source NDK
PDEW 2014/02/17 12:12:05.1 -17.99 -173.08  28.1 0.0 4.9 TONGA ISLANDS           
C201402171212A   B: 62   84  40 S:102  151  50 M:  0    0   0 CMT: 1 TRIHD:  0.8
CENTROID:      4.6 0.2 -17.78 0.02 -172.69 0.01  16.9  0.6 FREE S-20140518043440
23  3.850 0.144 -0.577 0.100 -3.270 0.101  1.230 0.257  1.530 0.225 -1.800 0.057
V10   4.326 76 321   0.285  5 209  -4.608 13 118   4.467 200 33   80  32 58   96
Other Formats
Contributions