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 Ground Motion Visualization Products

The Ground Motion Visualization (GMV) illustrates how seismic waves travel away from the earthquake location by depicting the recorded wave amplitudes at each seismic station location using colored symbols. For more information on GMVs visit the GMV product page.

Two types of GMVs are produced:

  • Vertical-component GMV:
    Produced for US events of magnitude 5.5 or larger and global events of magnitude 6 or larger. The symbol colors represent the amplitude of the vertical ground motion, as detected by the station's seismometer.
  • 3-Component GMV:
    Produced only for events with magnitude 7 and larger use 'tailed' symbols to show direction and amplitude of the normalized horizontal motion. Symbol colors also represent the amplitude of the vertical ground motion, as detected by the station's seismometer.

This product is automatically generated without human review.

GMV Query Help

This page queries for GMV products.

Citing Ground Motion Visualization Products

If you use GMVs in publications, please cite according to the instructions at:



— Chuck Ammon, Professor of Geosciences at Penn State’s original concept and visualizations. Read more
— Bob Woodward at IRIS - adapted the visualization code to MATLAB

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Event Criteria
Depth (km)
Max Lat:
Min Lon: Max Lon:
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Query Results: 2826 items found
ppPage: 1 of 29pp
Event Time (UTC)Depth (km)Trigger MagLatitudeLongitudeRegion
2020-08-09 14:58:0037.45.755.99-158.83ALASKA PENINSULA
2020-08-09 12:07:373.75.136.48-81.09NORTH CAROLINA
2020-08-08 14:42:5442.115.554.84-161.34ALASKA PENINSULA
2020-08-06 23:36:4410.06.3-41.7542.38PRINCE EDWARD ISLANDS REGION
2020-08-05 12:05:36174.756.4-16.11168.08VANUATU ISLANDS
2020-08-01 19:22:0710.06.0-3.27148.57BISMARCK SEA
2020-08-01 17:09:01479.566.47.30124.14MINDANAO, PHILIPPINES
2020-07-29 09:12:1640.325.654.97-160.33ALASKA PENINSULA
2020-07-28 08:03:4441.266.154.87-161.14ALASKA PENINSULA
2020-07-27 19:34:3944.135.555.10-160.48ALASKA PENINSULA
2020-07-26 00:53:5910.06.3-60.78-25.31SOUTH SANDWICH ISLANDS REGION
2020-07-22 20:07:1910.06.333.1386.84XIZANG
2020-07-22 06:16:1817.676.154.93-159.04SOUTH OF ALASKA
2020-07-22 06:12:4210.07.855.10-158.47ALASKA PENINSULA
2020-07-18 15:32:3510.06.2-15.28-172.65SAMOA ISLANDS REGION
2020-07-17 14:03:4210.06.111.9894.89ANDAMAN ISLANDS, INDIA REGION
2020-07-17 02:50:2379.797.0-7.84147.77EASTERN NEW GUINEA REG., P.N.G.
2020-07-06 22:54:46528.666.6-5.64110.68JAVA SEA
2020-07-06 18:16:1812.416.212.05140.25W. CAROLINE ISLANDS, MICRONESIA
2020-07-05 08:53:3510.05.553.37-160.43SOUTH OF ALASKA
2020-06-25 21:05:1810.06.435.6382.45XIZANG
2020-06-24 17:40:494.665.8136.45-117.98CALIFORNIA-NEVADA BORDER REGION
2020-06-23 15:29:0526.257.416.03-95.90OAXACA, MEXICO
2020-06-21 19:07:5510.06.066.58-18.51ICELAND REGION
2020-06-18 12:49:5310.07.4-33.29-177.84SOUTH OF KERMADEC ISLANDS
2020-06-13 21:08:30622.06.218.92145.10MARIANA ISLANDS
2020-06-13 15:51:24164.796.728.95128.30RYUKYU ISLANDS, JAPAN
2020-06-10 19:58:4910.06.0-15.84-13.05SOUTHERN MID-ATLANTIC RIDGE
2020-06-04 08:49:39106.866.42.92128.25HALMAHERA, INDONESIA
2020-06-04 01:32:117.095.5335.61-117.43CENTRAL CALIFORNIA
2020-06-03 07:35:3496.846.8-23.30-68.42NORTHERN CHILE
2020-05-31 05:09:35153.46.0-15.27-70.66SOUTHERN PERU
2020-05-27 07:09:1010.06.1-17.16167.86VANUATU ISLANDS
2020-05-22 08:46:0610.06.122.40-108.16OFF COAST OF CENTRAL MEXICO
2020-05-18 07:02:3410.05.540.83-127.23OFF COAST OF NORTHERN CALIFORNIA
2020-05-16 13:37:529.15.953.83-119.57ALBERTA, CANADA
2020-05-15 11:03:272.86.538.16-117.88NEVADA
2020-05-12 22:41:12112.46.6-12.11166.57SANTA CRUZ ISLANDS
2020-05-07 11:21:19466.26.1-4.45154.71SOLOMON ISLANDS
2020-05-06 13:53:56107.06.8-6.80129.86BANDA SEA
2020-05-02 12:51:0617.06.634.2125.71CRETE, GREECE
2020-04-25 02:53:0516.96.3-6.51154.30SOLOMON ISLANDS
2020-04-19 20:39:0641.76.438.92142.05NEAR EAST COAST OF HONSHU, JAPAN
2020-04-18 08:25:37453.86.627.14140.11BONIN ISLANDS, JAPAN REGION
2020-04-16 08:04:3710.06.016.93-85.71NORTH OF HONDURAS
2020-04-14 01:06:4410.06.0-30.38-176.32KERMADEC ISLANDS REGION
2020-04-12 06:57:4710.06.1-36.9677.45MID-INDIAN RIDGE
2020-03-31 23:52:3110.06.544.45-115.14WESTERN IDAHO
2020-03-26 15:38:0354.36.15.69125.18MINDANAO, PHILIPPINES
2020-03-25 02:49:2156.67.548.99157.69EAST OF KURIL ISLANDS
2020-03-22 22:38:0510.06.1-4.68-105.06CENTRAL EAST PACIFIC RISE
2020-03-18 17:45:3710.46.3-11.11115.06SOUTH OF BALI, INDONESIA
2020-03-18 13:09:3110.65.740.75-112.08UTAH
2020-03-18 03:13:46178.86.1-13.14167.07VANUATU ISLANDS
2020-03-14 10:01:1710.06.3-27.42-175.68KERMADEC ISLANDS REGION
2020-03-09 02:59:062.25.840.40-125.29OFF COAST OF NORTHERN CALIFORNIA
2020-03-02 00:31:1523.25.751.13-179.86ANDREANOF ISLANDS, ALEUTIAN IS.
2020-02-23 16:00:3110.06.038.4844.37TURKEY-IRAN BORDER REGION
2020-02-13 10:33:44142.66.945.67148.89KURIL ISLANDS
2020-02-09 06:04:2931.36.2-5.45152.10NEW BRITAIN REGION, P.N.G.
2020-02-08 14:32:5716.16.1-60.02-25.48SOUTH SANDWICH ISLANDS REGION
2020-02-06 13:40:0943.66.05.47126.49MINDANAO, PHILIPPINES
2020-02-05 18:12:37592.26.2-6.07113.12JAVA, INDONESIA
2020-01-29 13:49:5086.66.0-10.38161.28SOLOMON ISLANDS
2020-01-28 21:55:1610.06.118.95-80.71NORTH OF HONDURAS
2020-01-28 19:10:2510.07.719.44-78.75CUBA REGION
2020-01-27 05:02:0117.76.3-10.11161.02SOLOMON ISLANDS
2020-01-26 22:33:4035.05.751.31-179.99ANDREANOF ISLANDS, ALEUTIAN IS.
2020-01-26 09:12:0723.65.651.23-179.80ANDREANOF ISLANDS, ALEUTIAN IS.
2020-01-26 06:31:5727.16.151.35-179.92ANDREANOF ISLANDS, ALEUTIAN IS.
2020-01-24 17:55:1410.06.738.3339.08TURKEY
2020-01-23 05:53:0310.06.251.92-177.83ANDREANOF ISLANDS, ALEUTIAN IS.
2020-01-20 06:51:3791.36.1-59.23-26.27SOUTH SANDWICH ISLANDS REGION
2020-01-19 16:58:19118.16.0-0.13123.82MINAHASSA PENINSULA, SULAWESI
2020-01-18 16:38:1333.66.0-2.85139.33NEAR NORTH COAST OF IRIAN JAYA
2020-01-09 08:38:0810.06.362.42171.12EASTERN SIBERIA, RUSSIA
2020-01-07 19:11:35116.86.0-5.16151.26NEW BRITAIN REGION, P.N.G.
2020-01-07 11:18:4310.05.817.98-66.73PUERTO RICO REGION
2020-01-07 08:24:2710.06.517.95-66.74PUERTO RICO REGION
2020-01-07 06:05:2020.36.22.3396.35NORTHERN SUMATRA, INDONESIA
2019-12-25 03:36:0210.06.350.58-130.00VANCOUVER ISLAND, CANADA REGION
2019-12-24 19:03:5110.06.03.49-74.00COLOMBIA
2019-12-24 16:43:32560.66.0-26.98-63.37SANTIAGO DEL ESTERO PROV., ARG.
2019-12-23 20:56:2310.06.050.53-129.71VANCOUVER ISLAND, CANADA REGION
2019-12-23 19:49:4310.06.050.62-129.91VANCOUVER ISLAND, CANADA REGION
2019-12-23 19:13:2510.05.750.57-129.82VANCOUVER ISLAND, CANADA REGION
2019-12-20 11:39:52210.26.136.5370.44HINDU KUSH REGION, AFGHANISTAN
2019-12-15 06:11:5228.26.86.72125.21MINDANAO, PHILIPPINES
2019-12-06 13:04:4610.06.0-15.28-175.12TONGA ISLANDS
2019-12-03 08:46:3632.46.0-18.56-70.65NEAR COAST OF NORTHERN CHILE
2019-12-02 05:01:5427.36.051.32-178.24ANDREANOF ISLANDS, ALEUTIAN IS.
2019-11-27 07:23:4271.86.035.7323.27CRETE, GREECE
2019-11-26 02:54:1220.06.441.5219.56ALBANIA
2019-11-24 00:54:0225.16.351.53-175.56ANDREANOF ISLANDS, ALEUTIAN IS.
2019-11-23 12:11:1610.06.11.63132.79IRIAN JAYA REGION, INDONESIA
2019-11-20 23:50:4410.06.119.45101.35LAOS
2019-11-20 08:26:07486.86.353.16153.68SEA OF OKHOTSK
2019-11-20 04:27:0511.06.313.98-93.13OFF COAST OF CHIAPAS, MEXICO
2019-11-14 16:17:4145.17.11.59126.42NORTHERN MOLUCCA SEA
2019-11-11 23:03:2710.06.1-18.90-175.37TONGA ISLANDS
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