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/18048778

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) SOUTH SHETLAND ISLANDS icon
Centroid Event
Date-Time (UTC): 2019-10-19 16:39:00
Location: SOUTH SHETLAND ISLANDS
Latitude, Longitude: -61.590 °, -54.040 °
Magnitude: 4.9 MW
Depth: 21.0 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Event
Date-Time (UTC): 2019-10-19 16:39:00
Location: SOUTH SHETLAND ISLANDS
Latitude, Longitude: -61.726 °, -54.176 °
Magnitude: 4.6 mb (us)
Depth: 26.65 km
Author: us
Catalog, Contributor: NEIC PDE, us
CMT Details
Event ID C201910191639A
Timestamp: S-20191230061801
CMT Version: Final
NDK Version: V10
Reference Catalog: PDEW
Source Zero Trace
Moment Rate Fn: TRIHD
Half Duration: 0.7
Depth Determination: FREE
Scalar Moment 3.068 e+23 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 23, Units: dyne-cm)
ComponentValueError
Mrr-0.3730.162
Mtt-0.8540.101
Mpp1.230.122
Mrt0.5720.214
Mrp-1.540.264
Mtp2.350.096
Principal Axes (Length Exponent: 23, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T119173.066
N0570.007
P21827-3.07
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP125658-8
NP235083-147
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves212140
Mantle Waves000
Surface Waves8310550
Event Location
Source NDK
PDEW 2019/10/19 16:38:57.9 -61.67  -54.14  10.0 0.0 4.6 SOUTH SHETLAND ISLANDS  
C201910191639A   B: 21   21  40 S: 83  105  50 M:  0    0   0 CMT: 1 TRIHD:  0.7
CENTROID:      2.9 0.3 -61.59 0.02  -54.04 0.04  21.0  1.9 FREE S-20191230061801
23 -0.373 0.162 -0.854 0.101  1.230 0.122  0.572 0.214 -1.540 0.264  2.350 0.096
V10   3.066 17 119   0.007 57   0  -3.070 27 218   3.068 256 58   -8 350 83 -147
Other Formats
Contributions