Real-Time, High-Precision, Deep-Magnitude Earthquake Catalog for Axial Seamount
Combining machine learning, cross-correlation and double-difference algorithms

Last updated on Wed Apr 2 13:11:02 UTC 2025 ( Wed Apr 2 09:11:02 EDT 2025 )

About: This website displays near-real-time, machine-learning based, double-difference hypocenter locations for earthquakes recorded by the Ocean Observatories Initiative (OOI) cabled OBS array at Axial Seamount. The continuous waveform data is processed using machine-learning methods for detection, phase arrival-time picking, and association. New events are then located relative to a high-resolution background (base) catalog using waveform cross-correlation and double-differences. For more details see here.
Precursory mixed frequency earthquakes (MFEs; blue squares in figure), lava flow events, and whale calls are also monitored, using unsupervised ML.
This web site is updated every 10 minutes.

Archived DDRT solutions:
2022: 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12
2023: 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12
2024: 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12
2025: 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12

Downloads:
  • ML-DD real-time catalog, Jan 2022 - present
  • ML-DD base catalog, 2014-2021
  • For the machine-learning based single-event location catalog before DD relocation click here.
  • Search catalogs here.

    Analysis:
  • Histograms of seismic activity

    • Most recent events (events in queue = 0):

    Q: Solution quality DX: Shift between DD and network location (km); V: version (SE.DD)
    If Q='-': No DDRT solution computed.
    tech: technical information; 3D: 3D viewer; waves: wave plots; USGS: USGS event page

    ID DATE TIME (UTC) LAT LON DEPTH ML Q DX V
    509200015 2025/04/02 07:21:42.800 45.93787 -130.01559 0.960 0.10 2 0.51 1A.3 tech 3D waves
    509200014 2025/04/02 07:03:9.300 45.94561 -130.01143 0.199 0.20 2 0.56 1A.3 tech 3D waves
    509200013 2025/04/02 06:40:34.460 45.93977 -129.98248 1.136 0.20 1 0.30 1A.3 tech 3D waves
    509200012 2025/04/02 06:26:21.400 45.95427 -130.02844 0.280 0.40 2 1.43 1A.3 tech 3D waves
    509200011 2025/04/02 06:13:12.690 45.92596 -129.96966 0.870 -0.10 2 1.58 1A.3 tech 3D waves
    509200010 2025/04/02 05:57:14.900 45.96081 -129.99758 1.204 0.20 2 0.23 1A.3 tech 3D waves
    509200009 2025/04/02 05:40:0.900 45.93723 -129.98858 1.311 0.30 2 0.25 1A.3 tech 3D waves
    509200008 2025/04/02 05:39:12.640 45.92330 -129.97181 1.505 0.40 2 1.43 1A.3 tech 3D waves
    509200007 2025/04/02 05:37:28.740 45.92296 -129.96699 1.000 0.10 2 0.34 1A.3 tech 3D waves
    509200006 2025/04/02 05:30:59.250 45.92872 -129.99344 0.505 0.10 2 0.50 1A.3 tech 3D waves
    509200005 2025/04/02 05:30:55.540 45.92442 -129.97384 1.249 -0.20 2 0.31 1A.3 tech 3D waves
    509200003 2025/04/02 05:05:42.940 45.89904 -129.96707 0.010 0.70 2 4.76 1A.3 tech 3D waves
    509200001 2025/04/02 04:20:38.220 45.92638 -129.99061 0.241 0.20 2 0.05 1A.3 tech 3D waves
    509100358 2025/04/01 17:43:38.390 45.94067 -130.01228 0.510 0.20 1 0.13 1A.3 tech 3D waves
    509100357 2025/04/01 17:40:17.320 45.94565 -129.98428 0.010 0.00 1 0.18 1A.3 tech 3D waves
    509100356 2025/04/01 17:39:14.500 45.94837 -130.00269 0.067 0.30 2 0.30 1A.3 tech 3D waves
    509100355 2025/04/01 17:37:42.350 45.94367 -129.98394 1.374 -0.00 1 0.33 1A.3 tech 3D waves
    509100354 2025/04/01 17:37:36.260 45.94538 -129.98479 1.071 0.30 2 0.47 1A.3 tech 3D waves
    509100352 2025/04/01 17:35:52.680 45.93109 -129.98174 1.093 0.00 1 0.16 1A.3 tech 3D waves
    509100351 2025/04/01 17:35:41.410 45.94656 -129.99023 0.467 -0.10 1 0.11 1A.3 tech 3D waves

    Events last re/processed:
    509200014 2025/04/02 07:03:9.300 45.94561 -130.01143 0.199 0.20 2 0.56 1A.3 tech 3D waves
    509200015 2025/04/02 07:21:42.800 45.93787 -130.01559 0.960 0.10 2 0.51 1A.3 tech 3D waves
    509200011 2025/04/02 06:13:12.690 45.92596 -129.96966 0.870 -0.10 2 1.58 1A.3 tech 3D waves
    509200012 2025/04/02 06:26:21.400 45.95427 -130.02844 0.280 0.40 2 1.43 1A.3 tech 3D waves
    509200013 2025/04/02 06:40:34.460 45.93977 -129.98248 1.136 0.20 1 0.30 1A.3 tech 3D waves
    509200001 2025/04/02 04:20:38.220 45.92638 -129.99061 0.241 0.20 2 0.05 1A.3 tech 3D waves
    509200003 2025/04/02 05:05:42.940 45.89904 -129.96707 0.010 0.70 2 4.76 1A.3 tech 3D waves
    509200005 2025/04/02 05:30:55.540 45.92442 -129.97384 1.249 -0.20 2 0.31 1A.3 tech 3D waves
    509200006 2025/04/02 05:30:59.250 45.92872 -129.99344 0.505 0.10 2 0.50 1A.3 tech 3D waves
    509200007 2025/04/02 05:37:28.740 45.92296 -129.96699 1.000 0.10 2 0.34 1A.3 tech 3D waves



    Histograms of seismic activity:



    ____________________________________________________________________________________________________
    Data sources: Ocean Observatories Initiative (OOI), Incorporated Research Institutions for Seismology (IRIS)
    Project funded by NSF award OCE-1536320.
    Monitoring system and website developed and maintained at the Lamont-Doherty Earth Observatory of
    Columbia University.
    Contact: Felix Waldhauser (    felixw@ldeo.columbia.edu) and Kaiwen Wang (kw2988@columbia.edu).