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/19116821

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 4.6 (GCMT) GREENLAND SEA icon
Centroid Event
Date-Time (UTC): 2021-03-17 04:33:44
Location: GREENLAND SEA
Latitude, Longitude: 79.070 °, 2.400 °
Magnitude: 4.6 MW
Depth: 17.3 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Event
Date-Time (UTC): 2021-03-17 04:33:39
Location: GREENLAND SEA
Latitude, Longitude: 79.473 °, 2.622 °
Magnitude: 4.5 mb (us)
Depth: 10.0 km
Author: us
Catalog, Contributor: NEIC PDE, us
CMT Details
Event ID C202103170433A
Timestamp: S-20210530122511
CMT Version: Final
NDK Version: V10
Reference Catalog: PDEW
Source Zero Trace
Moment Rate Fn: TRIHD
Half Duration: 0.5
Depth Determination: FREE
Scalar Moment 1.058 e+23 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 23, Units: dyne-cm)
ComponentValueError
Mrr-1.080.102
Mtt0.3250.074
Mpp0.7580.064
Mrt-0.2360.211
Mrp0.0710.164
Mtp0.3890.037
Principal Axes (Length Exponent: 23, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T12120.988
N211110.143
P2279-1.128
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP120044-106
NP24148-75
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves161640
Mantle Waves000
Surface Waves779150
Event Location
Source NDK
PDEW 2021/03/17 04:33:39.7  79.47    2.62  10.0 0.0 4.5 GREENLAND SEA           
C202103170433A   B: 16   16  40 S: 77   91  50 M:  0    0   0 CMT: 1 TRIHD:  0.5
CENTROID:      5.0 0.4  79.07 0.05    2.40 0.17  17.3  1.4 FREE S-20210530122511
23 -1.080 0.102  0.325 0.074  0.758 0.064 -0.236 0.211  0.071 0.164  0.389 0.037
V10   0.988  2 121   0.143 11 211  -1.128 79  22   1.058 200 44 -106  41 48  -75
Other Formats
Contributions