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 Source Time Function Products

Point-source synthetic seismograms (theoretical Green's functions) are used along with vertical component (LHZ channel) recordings of short-arc Rayleigh waves (R1) from M7.0+ earthquakes to calculate source time functions at GSN and other stations. STFs are estimated using a simple two-source forward modeling approach by sweeping through the parameter space of two smoothed triangle and/or trapezoid functions of various widths, offset and amplitude and retaining the best fitting solution.

For more information on R1 source time functions visit the product page.

This product is automatically generated without human review.

Source Time Function Query Help

The page queries for Source Time Function products.

Citing Source Time Function Products

If you use Source Time Functions in publications, please cite according to the instructions at:



Charles Ammon generously provided the time-domain iterative deconvolution portion of the code used. Luis Rivera generously provided the normal mode synthetic seismogram codes used. Results can be very sensitive to pre-processing, which neither C.A. nor L.R. contributed to.

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Event Criteria
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Query Results: 290 items found
ppPage: 1 of 3pp
Event Time (UTC)Depth (km)Trigger MagLatitudeLongitudeRegion
2017-01-03 21:52:3115.27.2-19.33176.06SOUTH OF FIJI ISLANDS
2016-12-25 14:22:2733.017.7-43.42-73.90SOUTHERN CHILE
2016-12-17 10:51:12103.197.9-4.51153.45NEW IRELAND REGION, P.N.G.
2016-12-08 17:38:4641.07.8-10.66161.33SOLOMON ISLANDS
2016-11-24 18:43:4910.37.011.96-88.84OFF COAST OF CENTRAL AMERICA
2016-11-13 11:02:5623.07.8-42.76173.08SOUTH ISLAND, NEW ZEALAND
2016-09-01 16:37:5830.77.1-37.46179.18OFF E. COAST OF N. ISLAND, N.Z.
2016-08-19 07:32:2210.07.4-55.34-31.94SOUTH GEORGIA ISLAND REGION
2016-08-12 01:26:3616.17.6-22.49173.10LOYALTY ISLANDS REGION
2016-07-29 21:18:25212.47.718.52145.53MARIANA ISLANDS
2016-05-28 09:47:0193.27.3-56.26-27.04SOUTH SANDWICH ISLANDS REGION
2016-04-28 19:33:2635.07.0-16.09167.34VANUATU ISLANDS
2016-04-16 23:58:3719.27.80.37-79.94NEAR COAST OF ECUADOR
2016-04-15 16:25:0610.07.032.78130.73KYUSHU, JAPAN
2016-04-03 08:23:5335.07.2-14.35166.82VANUATU ISLANDS
2016-03-02 12:49:4824.07.9-4.9194.28SOUTHWEST OF SUMATERA, INDONESIA
2016-01-30 03:25:10161.07.054.01158.51KAMCHATKA
2016-01-24 10:30:30127.87.159.66-153.45SOUTHERN ALASKA
2015-12-04 22:24:5410.07.1-47.7485.18SOUTHEAST INDIAN RIDGE
2015-10-26 09:09:32212.57.536.4470.72HINDU KUSH REGION, AFGHANISTAN
2015-10-20 21:52:02127.17.3-14.84167.31VANUATU ISLANDS
2015-09-16 22:54:3225.08.3-31.56-71.74NEAR COAST OF CENTRAL CHILE
2015-07-18 02:27:3310.07.5-10.41165.21SANTA CRUZ ISLANDS
2015-06-17 12:51:3310.07.0-35.36-17.39SOUTHERN MID-ATLANTIC RIDGE
2015-05-30 11:23:02677.67.827.83140.49BONIN ISLANDS REGION
2015-05-29 07:00:0861.77.056.69-156.53ALASKA PENINSULA
2015-05-07 07:10:2222.17.2-7.28154.53SOLOMON ISLANDS
2015-05-05 01:44:0763.17.4-5.50151.92NEW BRITAIN REGION, P.N.G.
2015-04-25 06:11:2511.97.928.1784.73NEPAL
2015-03-29 23:48:3465.77.7-4.75152.56NEW BRITAIN REGION, P.N.G.
2014-09-17 06:14:46133.97.113.74144.39MARIANA ISLANDS
2014-06-29 07:52:5714.77.1-55.56-28.57SOUTH SANDWICH ISLANDS REGION
2014-06-23 20:53:10114.48.051.80178.76RAT ISLANDS, ALEUTIAN ISLANDS
2014-06-23 19:19:1620.07.2-30.12-177.67KERMADEC ISLANDS, NEW ZEALAND
2014-04-19 13:27:5930.97.5-6.72154.93SOLOMON ISLANDS
2014-04-18 14:27:2948.67.517.59-100.74GUERRERO, MEXICO
2014-04-13 12:36:1835.07.5-11.45162.06SOLOMON ISLANDS
2014-04-12 20:14:3929.37.6-11.31162.21SOLOMON ISLANDS
2014-04-03 02:43:1520.07.8-20.43-70.11NEAR COAST OF NORTHERN CHILE
2014-04-01 23:46:4510.08.0-19.63-70.86NEAR COAST OF NORTHERN CHILE
2014-03-16 21:16:3335.07.0-19.84-70.57NEAR COAST OF NORTHERN CHILE
2013-11-17 09:04:5510.07.8-60.30-46.36SCOTIA SEA
2013-10-25 17:10:1610.07.337.19144.66OFF EAST COAST OF HONSHU, JAPAN
2013-10-15 00:12:3756.87.29.77124.02MINDANAO, PHILIPPINE ISLANDS
2013-09-24 11:29:4815.07.827.0265.55PAKISTAN
2013-08-30 16:25:0334.57.051.71-175.37ANDREANOF ISLANDS, ALEUTIAN IS.
2013-07-15 14:03:4231.37.3-60.86-25.19SOUTH SANDWICH ISLANDS REGION
2013-07-07 18:35:30378.77.2-3.94153.88NEW IRELAND REGION, P.N.G.
2013-05-24 05:44:48598.18.454.89153.22SEA OF OKHOTSK
2013-05-23 17:19:04171.37.4-23.02-177.11SOUTH OF FIJI ISLANDS
2013-04-19 03:05:53122.27.246.18150.80KURIL ISLANDS
2013-02-09 14:16:06129.27.01.14-77.36COLOMBIA
2013-02-08 15:26:3926.97.0-10.91165.96SANTA CRUZ ISLANDS
2013-02-06 01:12:235.78.0-10.75165.09SANTA CRUZ ISLANDS
2013-01-05 08:58:1910.07.555.39-134.65SOUTHEASTERN ALASKA
2012-12-10 16:53:09157.67.1-6.52129.81BANDA SEA
2012-11-07 16:35:4624.07.413.99-91.89NEAR COAST OF GUATEMALA
2012-10-28 03:04:1017.57.752.77-131.93QUEEN CHARLOTTE ISLANDS REGION
2012-09-30 16:31:34150.47.11.97-76.32COLOMBIA
2012-09-05 14:42:1040.77.610.12-85.35COSTA RICA
2012-08-31 12:47:3434.87.610.84126.70PHILIPPINE ISLANDS REGION
2012-08-27 04:37:2352.97.412.28-88.53OFF COAST OF CENTRAL AMERICA
2012-08-14 02:59:42625.97.749.78145.13SEA OF OKHOTSK
2012-04-12 07:15:4810.36.928.79-113.14BAJA CALIFORNIA, MEXICO
2012-04-11 10:43:0916.48.20.7792.45OFF W COAST OF NORTHERN SUMATERA
2012-04-11 08:38:3833.08.72.3593.07OFF W COAST OF NORTHERN SUMATERA
2012-03-20 18:02:4817.57.616.66-98.19NEAR COAST OF GUERRERO, MEXICO
2012-03-14 09:08:3512.07.040.89144.94OFF EAST COAST OF HONSHU, JAPAN
2012-02-02 13:34:3810.16.9-17.81167.15VANUATU ISLANDS
2012-01-10 18:37:0129.17.32.4093.18OFF W COAST OF NORTHERN SUMATERA
2011-12-14 05:04:58135.07.1-7.55146.81EASTERN NEW GUINEA REG., P.N.G.
2011-10-23 10:41:2429.27.138.6743.49TURKEY
2011-10-21 17:57:1739.87.6-28.94-176.05KERMADEC ISLANDS REGION
2011-09-03 22:55:36132.47.0-20.58169.70VANUATU ISLANDS
2011-08-24 17:46:11145.17.0-7.64-74.51PERU-BRAZIL BORDER REGION
2011-08-20 18:19:2330.67.1-18.33168.13VANUATU ISLANDS
2011-08-20 16:55:0232.07.1-18.36168.10VANUATU ISLANDS
2011-07-10 00:57:1234.97.038.04143.29OFF EAST COAST OF HONSHU, JAPAN
2011-07-06 19:03:161.07.7-29.33-176.22KERMADEC ISLANDS REGION
2011-06-24 03:09:3946.87.452.04-171.84FOX ISLANDS, ALEUTIAN ISLANDS
2011-03-11 05:46:2324.48.938.32142.37NEAR EAST COAST OF HONSHU, JAPAN
2011-03-09 02:45:2032.07.538.44142.84NEAR EAST COAST OF HONSHU, JAPAN
2011-01-13 16:16:4214.87.0-20.60168.59LOYALTY ISLANDS
2011-01-02 20:20:1616.97.1-38.36-73.28NEAR COAST OF CENTRAL CHILE
2010-12-25 13:16:3815.77.3-19.84167.94VANUATU ISLANDS REGION
2010-12-21 17:19:4014.07.426.90143.69BONIN ISLANDS REGION
2010-10-25 14:42:2220.17.8-3.49100.08SOUTHERN SUMATERA, INDONESIA
2010-09-29 17:11:2526.06.9-4.96133.76IRIAN JAYA REGION, INDONESIA
2010-09-03 16:35:4712.07.0-43.53171.81SOUTH ISLAND, NEW ZEALAND
2010-08-12 11:54:15206.77.1-1.27-77.31ECUADOR
2010-08-10 05:23:4425.07.2-17.54168.07VANUATU ISLANDS
2010-07-23 22:51:12585.87.66.49123.47MINDANAO, PHILIPPINE ISLANDS
2010-07-18 13:34:5935.07.3-5.93150.59NEW BRITAIN REGION, P.N.G.
2010-06-26 05:30:1935.06.7-10.63161.45SOLOMON ISLANDS
2010-06-16 03:58:0810.56.6-2.33136.48IRIAN JAYA REGION, INDONESIA
2010-06-16 03:16:2718.07.0-2.17136.54IRIAN JAYA REGION, INDONESIA
2010-06-12 19:26:5035.07.57.8891.94NICOBAR ISLANDS, INDIA
2010-05-09 05:59:4138.07.23.7596.02NORTHERN SUMATERA, INDONESIA
2010-04-06 22:15:0131.07.82.3897.05NORTHERN SUMATERA, INDONESIA
2010-04-04 22:40:434.07.232.30-115.28CALIF.-BAJA CALIF. BORDER REGION
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