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/18630587

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 6.2 (GCMT) CHAGOS ARCHIPELAGO REGION icon
Centroid Event
Date-Time (UTC): 2020-08-31 17:24:07
Location: CHAGOS ARCHIPELAGO REGION
Latitude, Longitude: -4.110 °, 70.190 °
Magnitude: 6.2 MW
Depth: 14.9 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Event
Date-Time (UTC): 2020-08-31 17:24:04
Location: CHAGOS ARCHIPELAGO REGION
Latitude, Longitude: -4.016 °, 70.197 °
Magnitude: 6.1 mww (us)
Depth: 10.0 km
Author: us,pt,at
Catalog, Contributor: NEIC PDE, us
Related Products:
CMT Details
Event ID C202008311724A
Timestamp: S-20201031203606
CMT Version: Final
NDK Version: V10
Reference Catalog: PDEW
Source Zero Trace
Moment Rate Fn: TRIHD
Half Duration: 3.0
Depth Determination: FREE
Scalar Moment 2.259 e+25 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 25, Units: dyne-cm)
ComponentValueError
Mrr-0.5440.01
Mtt2.460.012
Mpp-1.910.011
Mrt0.5850.025
Mrp-0.2220.02
Mtp-0.060.009
Principal Axes (Length Exponent: 25, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T1112.572
N14076-0.621
P2709-1.945
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP14576179
NP21368914
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves16434640
Mantle Waves150257125
Surface Waves17441050
Event Location
Source NDK
PDEW 2020/08/31 17:24:04.9  -4.02   70.20  10.0 0.0 6.1 CHAGOS ARCHIPELAGO REGIO
C202008311724A   B:164  346  40 S:174  410  50 M:150  257 125 CMT: 1 TRIHD:  3.0
CENTROID:      2.7 0.1  -4.11 0.00   70.19 0.00  14.9  0.3 FREE S-20201031203606
25 -0.544 0.010  2.460 0.012 -1.910 0.011  0.585 0.025 -0.222 0.020 -0.060 0.009
V10   2.572 11   1  -0.621 76 140  -1.945  9 270   2.259  45 76  179 136 89   14
Other Formats
Other Products For This Event
Product TypeDescriptionOrganization
Global ShakeMovie syntheticGlobal ShakeMovie synthetic for MW 6.2 CHAGOS ARCHIPELAGO REGIONIRIS
Surface-Wave Radiation PatternsSurface-Wave Radiation Patterns for MW 6.2 CHAGOS ARCHIPELAGO REGIONIncorporated Research Institutions for Seismology
EQ EnergyEQ Energy for mww 6.2 CHAGOS ARCHIPELAGO REGIONIncorporated Research Institutions for Seismology
GMVGMV for mww 6.2 CHAGOS ARCHIPELAGO REGIONIncorporated Research Institutions for Seismology
Event PlotsEvent Plots for mww 6.2 CHAGOS ARCHIPELAGO REGIONIncorporated Research Institutions for Seismology
Contributions