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


Last updated on Mon Jul 7 00:57:48 UTC 2025 ( Sun Jul 6 20:57:48 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
    518700406 2025/07/06 22:36:30.650 45.94351 -130.00804 0.034 0.00 2 0.10 1A.3 tech 3D waves
    518700405 2025/07/06 22:34:41.290 45.93550 -129.97762 1.547 -0.00 2 0.08 1A.3 tech 3D waves
    518700404 2025/07/06 22:02:36.320 45.93605 -129.97733 1.483 -0.00 1 0.14 1A.3 tech 3D waves
    518700403 2025/07/06 21:58:59.860 45.95352 -129.98634 1.630 -0.20 1 0.29 1A.3 tech 3D waves
    518700402 2025/07/06 21:54:8.180 45.93948 -129.98136 1.066 -0.10 2 0.69 1A.3 tech 3D waves
    518700401 2025/07/06 21:12:11.440 45.93809 -130.01895 1.119 0.40 1 0.15 1A.3 tech 3D waves
    518700397 2025/07/06 19:14:53.510 45.94425 -129.98133 0.010 0.50 2 0.29 1A.3 tech 3D waves
    518700391 2025/07/06 18:13:36.580 45.95344 -129.98931 1.556 0.20 1 0.16 1A.3 tech 3D waves
    518700390 2025/07/06 18:08:43.540 45.93899 -129.97782 1.740 -0.00 2 0.66 1A.3 tech 3D waves
    518700389 2025/07/06 18:02:12.270 45.95526 -129.98857 1.727 0.00 2 0.26 1A.3 tech 3D waves
    518700388 2025/07/06 18:01:31.870 45.95443 -130.00143 1.108 -0.10 1 1.58 1A.3 tech 3D waves
    518700387 2025/07/06 17:52:43.180 45.93808 -130.01790 0.977 0.20 2 1.42 1A.3 tech 3D waves
    518700386 2025/07/06 17:40:41.900 45.94073 -130.03612 2.044 -0.30 2 2.98 1A.3 tech 3D waves
    518700385 2025/07/06 17:34:19.810 45.94326 -129.98111 1.545 0.00 2 0.54 1A.3 tech 3D waves
    518700384 2025/07/06 17:28:17.880 45.91581 -129.98567 1.183 -0.10 2 0.96 1A.3 tech 3D waves
    518700383 2025/07/06 17:25:29.960 45.92298 -129.96819 2.061 0.20 2 0.42 1A.3 tech 3D waves
    518700380 2025/07/06 17:17:1.230 45.96046 -129.99382 1.376 0.00 1 0.51 1A.3 tech 3D waves
    518700379 2025/07/06 17:08:28.240 45.95776 -129.99623 0.723 0.10 2 0.43 1A.3 tech 3D waves
    518700378 2025/07/06 16:46:32.520 45.94319 -129.98758 0.382 0.20 2 0.10 1A.3 tech 3D waves
    518700377 2025/07/06 16:44:46.550 45.94194 -130.01768 0.703 0.80 2 0.20 1A.3 tech 3D waves

    Events last re/processed:
    518700404 2025/07/06 22:02:36.320 45.93605 -129.97733 1.483 -0.00 1 0.14 1A.3 tech 3D waves
    518700405 2025/07/06 22:34:41.290 45.93550 -129.97762 1.547 -0.00 2 0.08 1A.3 tech 3D waves
    518700406 2025/07/06 22:36:30.650 45.94351 -130.00804 0.034 0.00 2 0.10 1A.3 tech 3D waves
    518700401 2025/07/06 21:12:11.440 45.93809 -130.01895 1.119 0.40 1 0.15 1A.3 tech 3D waves
    518700402 2025/07/06 21:54:8.180 45.93948 -129.98136 1.066 -0.10 2 0.69 1A.3 tech 3D waves
    518700403 2025/07/06 21:58:59.860 45.95352 -129.98634 1.630 -0.20 1 0.29 1A.3 tech 3D waves
    518700397 2025/07/06 19:14:53.510 45.94425 -129.98133 0.010 0.50 2 0.29 1A.3 tech 3D waves
    518700388 2025/07/06 18:01:31.870 45.95443 -130.00143 1.108 -0.10 1 1.58 1A.3 tech 3D waves
    518700389 2025/07/06 18:02:12.270 45.95526 -129.98857 1.727 0.00 2 0.26 1A.3 tech 3D waves
    518700390 2025/07/06 18:08:43.540 45.93899 -129.97782 1.740 -0.00 2 0.66 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).