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/19514228

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) PACIFIC-ANTARCTIC RIDGE icon
Centroid Event
Date-Time (UTC): 2021-07-02 02:38:45
Location: PACIFIC-ANTARCTIC RIDGE
Latitude, Longitude: -54.200 °, -133.500 °
Magnitude: 4.9 MW
Depth: 26.4 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Event
No updated event details available
CMT Details
Event ID C202107020238A
Timestamp: S-20211021111938
CMT Version: Final
NDK Version: V10
Reference Catalog: SWEQ
Source Zero Trace
Moment Rate Fn: TRIHD
Half Duration: 0.7
Depth Determination: FREE
Scalar Moment 2.941 e+23 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 23, Units: dyne-cm)
ComponentValueError
Mrr0.5310.172
Mtt1.60.131
Mpp-2.130.131
Mrt0.9060.247
Mrp0.210.218
Mtp2.030.084
Principal Axes (Length Exponent: 23, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T337222.852
N149680.179
P2463-3.03
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP11973166
NP21137718
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves313740
Mantle Waves000
Surface Waves8510550
Event Location
Source NDK
SWEQ 2021/07/02 02:38:48.0 -54.75 -132.75  10.0 0.0 4.8 PACIFIC-ANTARCTIC RIDGE 
C202107020238A   B: 31   37  40 S: 85  105  50 M:  0    0   0 CMT: 1 TRIHD:  0.7
CENTROID:     -2.5 0.3 -54.20 0.02 -133.50 0.02  26.4  1.4 FREE S-20211021111938
23  0.531 0.172  1.600 0.131 -2.130 0.131  0.906 0.247  0.210 0.218  2.030 0.084
V10   2.852 22 337   0.179 68 149  -3.030  3 246   2.941  19 73  166 113 77   18
Other Formats
Contributions