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/19734117

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) ICELAND REGION icon
Centroid Event
Date-Time (UTC): 2021-08-01 13:03:09
Location: ICELAND REGION
Latitude, Longitude: 62.670 °, -25.280 °
Magnitude: 4.9 MW
Depth: 12.0 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Event
Date-Time (UTC): 2021-08-01 13:03:09
Location: ICELAND REGION
Latitude, Longitude: 62.831 °, -25.249 °
Magnitude: 4.7 mb (us)
Depth: 10.0 km
Author: us
Catalog, Contributor: NEIC PDE, us
CMT Details
Event ID C202108011303A
Timestamp: S-20211029203450
CMT Version: Final
NDK Version: V10
Reference Catalog: PDEW
Source Zero Trace
Moment Rate Fn: TRIHD
Half Duration: 0.6
Depth Determination: FIX
Scalar Moment 2.379 e+23 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 23, Units: dyne-cm)
ComponentValueError
Mrr-1.280.082
Mtt-1.240.099
Mpp2.530.058
Mrt-0.2250.289
Mrp0.2210.184
Mtp1.320.061
Principal Axes (Length Exponent: 23, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T28722.951
N19462-1.134
P1828-1.807
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP15969-19
NP215672-158
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves243040
Mantle Waves000
Surface Waves10216150
Event Location
Source NDK
PDEW 2021/08/01 13:03:09.1  62.83  -25.25  10.0 0.0 4.7 ICELAND REGION          
C202108011303A   B: 24   30  40 S:102  161  50 M:  0    0   0 CMT: 1 TRIHD:  0.6
CENTROID:      0.3 0.2  62.67 0.02  -25.28 0.02  12.0  0.0 FIX  S-20211029203450
23 -1.280 0.082 -1.240 0.099  2.530 0.058 -0.225 0.289  0.221 0.184  1.320 0.061
V10   2.951  2 287  -1.134 62 194  -1.807 28  18   2.379  59 69  -19 156 72 -158
Other Formats
Contributions