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/20513907

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 7.7 (GCMT) NEAR COAST OF MICHOACAN, MEXICO (Inactive) icon
Centroid Event
Date-Time (UTC): 2022-09-19 18:05:26
Location: NEAR COAST OF MICHOACAN, MEXICO
Latitude, Longitude: 18.590 °, -103.430 °
Magnitude: 7.7 MW
Depth: 16.9 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Event
Date-Time (UTC): 2022-09-19 18:05:07
Location: MICHOACAN, MEXICO
Latitude, Longitude: 18.497 °, -102.982 °
Magnitude: 7.6 mww (us)
Depth: 25.485 km
Author: at,pt,us,usauto
Catalog, Contributor: NEIC PDE, us
Related Products:
CMT Details
Event ID C202209191805A
Timestamp: Q-20220919164138
CMT Version: Quick
NDK Version: V10
Reference Catalog: PDEQ
Source Zero Trace
Moment Rate Fn: TRIHD
Half Duration: 17.3
Depth Determination: FREE
Scalar Moment 4.493 e+27 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 27, Units: dyne-cm)
ComponentValueError
Mrr1.610.008
Mtt-1.230.005
Mpp-0.3810.005
Mrt4.020.106
Mrp-1.240.057
Mtp0.6110.003
Principal Axes (Length Exponent: 27, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T14554.545
N1083-0.105
P20135-4.441
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP130611107
NP21088087
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves14939750
Mantle Waves151402150
Surface Waves14133050
Event Location
Source NDK
PDEQ 2022/09/19 18:05:06.8  18.37 -103.25  15.1 0.0 7.6 NEAR COAST OF MICHOACAN,
C202209191805A   B:149  397  50 S:141  330  50 M:151  402 150 CMT: 1 TRIHD: 17.3
CENTROID:     19.6 0.1  18.59 0.01 -103.43 0.01  16.9  0.3 FREE Q-20220919164138
27  1.610 0.008 -1.230 0.005 -0.381 0.005  4.020 0.106 -1.240 0.057  0.611 0.003
V10   4.545 55  14  -0.105  3 108  -4.441 35 201   4.493 306 11  107 108 80   87
Other Formats
Other Products For This Event
Product TypeDescriptionOrganization
Moment TensorMoment Tensor for MW 7.7 (GCMT) NEAR COAST OF MICHOACAN, MEXICOIRIS DMC
Back ProjectionsBack Projections for mww 7.6 NEAR COAST OF MICHOACAN, MEXICOIRIS DMC
Surface-Wave Radiation PatternsSurface-Wave Radiation Patterns for MW 7.7 NEAR COAST OF MICHOACAN, MEXICOIncorporated Research Institutions for Seismology
EQ EnergyEQ Energy for mww 7.6 NEAR COAST OF MICHOACAN, MEXICOIncorporated Research Institutions for Seismology
Event PlotsEvent Plots for mww 7.6 NEAR COAST OF MICHOACAN, MEXICOIncorporated Research Institutions for Seismology
GMVGMV for mww 7.6 NEAR COAST OF MICHOACAN, MEXICOIncorporated Research Institutions for Seismology
AftershocksAftershocks for mww 7.6 MICHOACAN, MEXICOIRIS DMC
Contributions