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/19815811

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 4.8 (GCMT) BALLENY ISLANDS REGION icon
Centroid Event
Date-Time (UTC): 2021-11-04 08:17:22
Location: BALLENY ISLANDS REGION
Latitude, Longitude: -62.130 °, 155.190 °
Magnitude: 4.8 MW
Depth: 15.3 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Event
No updated event details available
CMT Details
Event ID C202111040817A
Timestamp: S-20220129195248
CMT Version: Final
NDK Version: V10
Reference Catalog: SWEQ
Source Zero Trace
Moment Rate Fn: TRIHD
Half Duration: 0.6
Depth Determination: FREE
Scalar Moment 2.222 e+23 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 23, Units: dyne-cm)
ComponentValueError
Mrr-0.1640.138
Mtt1.60.106
Mpp-1.430.11
Mrt-0.3940.325
Mrp0.0770.382
Mtp-1.580.123
Principal Axes (Length Exponent: 23, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T20392.336
N3981-0.222
P2933-2.108
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP1338825
NP224885172
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves161740
Mantle Waves000
Surface Waves698450
Event Location
Source NDK
SWEQ 2021/11/04 08:17:20.0 -62.25  154.75  10.0 0.0 4.9 BALLENY ISLANDS REGION  
C202111040817A   B: 16   17  40 S: 69   84  50 M:  0    0   0 CMT: 1 TRIHD:  0.6
CENTROID:      2.7 0.4 -62.13 0.02  155.19 0.05  15.3  2.4 FREE S-20220129195248
23 -0.164 0.138  1.600 0.106 -1.430 0.110 -0.394 0.325  0.077 0.382 -1.580 0.123
V10   2.336  9 203  -0.222 81  39  -2.108  3 293   2.222 338 82    5 248 85  172
Other Formats
Contributions