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/18011285

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) WEST OF MACQUARIE ISLAND icon
Centroid Event
Date-Time (UTC): 2018-10-18 04:19:05
Location: WEST OF MACQUARIE ISLAND
Latitude, Longitude: -58.750 °, 148.770 °
Magnitude: 4.8 MW
Depth: 12.3 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Event
No updated event details available
CMT Details
Event ID C201810180419A
Timestamp: S-20181229234331
CMT Version: Final
NDK Version: V10
Reference Catalog: PDEW
Source Zero Trace
Moment Rate Fn: TRIHD
Half Duration: 0.6
Depth Determination: FREE
Scalar Moment 2.319 e+23 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 23, Units: dyne-cm)
ComponentValueError
Mrr-0.0850.109
Mtt0.9750.088
Mpp-0.890.104
Mrt-1.20.366
Mrp0.1370.261
Mtp-1.780.087
Principal Axes (Length Exponent: 23, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T208232.524
N6761-0.411
P30616-2.113
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP1348625
NP225685152
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves111340
Mantle Waves000
Surface Waves8911750
Event Location
Source NDK
PDEW 2018/10/18 04:19:03.2 -58.69  148.86  10.0 0.0 4.4 WEST OF MACQUARIE ISLAND
C201810180419A   B: 11   13  40 S: 89  117  50 M:  0    0   0 CMT: 1 TRIHD:  0.6
CENTROID:      2.2 0.3 -58.75 0.02  148.77 0.04  12.3  2.3 FREE S-20181229234331
23 -0.085 0.109  0.975 0.088 -0.890 0.104 -1.200 0.366  0.137 0.261 -1.780 0.087
V10   2.524 23 208  -0.411 61  67  -2.113 16 306   2.319 348 62    5 256 85  152
Other Formats
Contributions