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/18007373

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) PRINCE EDWARD ISLANDS REGION icon
Centroid Event
Date-Time (UTC): 2018-05-06 17:24:10
Location: PRINCE EDWARD ISLANDS REGION
Latitude, Longitude: -43.900 °, 40.670 °
Magnitude: 4.9 MW
Depth: 20.4 km
Author: Global CMT Project
Catalog, Contributor: GCMT, GCMT
Event
No updated event details available
CMT Details
Event ID C201805061724A
Timestamp: S-20180918232957
CMT Version: Final
NDK Version: V10
Reference Catalog: SWEQ
Source Zero Trace
Moment Rate Fn: TRIHD
Half Duration: 0.7
Depth Determination: FREE
Scalar Moment 3.041 e+23 (dyne-cm)
Focal Mechanism
Moment Tensor (Exponent: 23, Units: dyne-cm)
ComponentValueError
Mrr-1.60.183
Mtt0.4990.111
Mpp1.10.12
Mrt-0.5590.172
Mrp1.850.239
Mtp-2.010.079
Principal Axes (Length Exponent: 23, Units: dyne-cm)
NameAzimuth (°)Plunge (°)Length
T233203.464
N33226-0.848
P10957-2.617
Nodal Planes
NameStrike (°)Dip (°)Rake (°)
NP128734-141
NP216369-63
Data Used in Inversion
TypeStationsComponentsShortest Period (s)
Body Waves202940
Mantle Waves000
Surface Waves8912650
Event Location
Source NDK
SWEQ 2018/05/06 17:24:08.0 -43.75   40.25  10.0 0.0 4.8 PRINCE EDWARD ISLANDS RE
C201805061724A   B: 20   29  40 S: 89  126  50 M:  0    0   0 CMT: 1 TRIHD:  0.7
CENTROID:      2.0 0.3 -43.90 0.02   40.67 0.03  20.4  1.5 FREE S-20180918232957
23 -1.600 0.183  0.499 0.111  1.100 0.120 -0.559 0.172  1.850 0.239 -2.010 0.079
V10   3.464 20 233  -0.848 26 332  -2.617 57 109   3.041 287 34 -141 163 69  -63
Other Formats
Contributions