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/827130

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) LAPTEV SEA icon
Centroid Event
Date-Time (UTC): 1977-04-23 14:49:13
Location: LAPTEV SEA
Latitude, Longitude: 74.670 °, 133.620 °
Magnitude: 4.9 MW
Depth: 10.0 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Event
No updated event details available
CMT Details
Event ID B042377A
Timestamp: O-00000000000000
CMT Version: Final
NDK Version: V10
Reference Catalog: MLI
Source Zero Trace
Moment Rate Fn: BOXHD
Half Duration: 1.3
Depth Determination: FIX
Scalar Moment 2.5 e+23 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 23, Units: dyne-cm)
ComponentValueError
Mrr-1.8380.439
Mtt-1.3180.495
Mpp3.1550.453
Mrt0.00.0
Mrp0.00.0
Mtp-0.0110.517
Principal Axes (Length Exponent: 23, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T9003.16
N1800-1.32
P18090-1.84
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP118045-90
NP2045-90
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves51345
Mantle Waves000
Surface Waves000
Event Location
Source NDK
MLI  1977/04/23 14:49:09.1  75.23  134.38  37.0 5.0 4.2 LAPTEV SEA              
B042377A         B:  5   13  45 S:  0    0   0 M:  0    0   0 CMT: 1 BOXHD:  1.3
CENTROID:      4.1 2.7  74.67 0.56  133.62 0.85  10.0  0.0 FIX  O-00000000000000
23 -1.838 0.439 -1.318 0.495  3.155 0.453  0.000 0.000  0.000 0.000 -0.011 0.517
V10   3.160  0  90  -1.320  0 180  -1.840 90 180   2.500 180 45  -90   0 45  -90
Other Formats
Contributions