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


Last updated on Sun Oct 11 02:30:08 UTC 2026 ( Sat Oct 10 22:30:08 EDT 2026 )

About: This website displays near-real-time, high-precision 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, discrimination, phase arrival-time picking, and association [click here]. New events are then located relative to a high-resolution background (base) catalog using waveform cross-correlation and double-differences [click here]. 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
2026: 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
    628000253 2026/10/07 10:11:21.860 45.94727 -130.01099 0.260 0.10 2 0.14 1A.3 tech 3D waves
    628000250 2026/10/07 10:06:17.410 45.95849 -129.99277 1.663 0.20 2 0.77 1A.3 tech 3D waves
    628000245 2026/10/07 09:50:49.090 45.96030 -129.99580 1.630 0.20 - - 1A.0 tech 3D waves
    628000237 2026/10/07 09:26:12.680 45.96016 -129.99612 1.364 0.40 1 0.15 1A.3 tech 3D waves
    628000235 2026/10/07 09:22:25.080 45.92057 -129.98449 0.250 0.60 2 0.24 1A.3 tech 3D waves
    628000234 2026/10/07 09:17:35.760 45.96054 -129.99567 0.426 0.10 2 0.98 1A.3 tech 3D waves
    628000226 2026/10/07 08:47:6.370 45.95147 -129.99692 0.464 0.20 1 0.24 1A.3 tech 3D waves
    628000221 2026/10/07 08:44:9.170 45.91505 -129.98849 1.021 0.50 2 0.40 1A.3 tech 3D waves
    628000222 2026/10/07 08:44:16.860 45.91461 -129.98727 1.080 0.70 2 0.44 1A.3 tech 3D waves
    628000220 2026/10/07 08:43:55.730 45.99527 -129.95550 3.088 0.60 2 7.24 1A.3 tech 3D waves
    628000218 2026/10/07 08:43:29.540 45.90729 -129.99748 0.010 1.00 2 1.83 1A.3 tech 3D waves
    628000217 2026/10/07 08:43:25.660 45.91281 -129.98732 1.172 0.90 2 0.50 1A.3 tech 3D waves
    628000216 2026/10/07 08:28:7.030 45.94803 -129.99506 0.015 0.20 2 0.28 1A.3 tech 3D waves
    628000215 2026/10/07 08:20:39.750 45.96420 -129.99635 1.512 0.40 2 0.73 1A.3 tech 3D waves
    628000213 2026/10/07 07:54:7.820 45.96043 -129.99592 1.327 0.20 1 0.39 1A.3 tech 3D waves
    628000208 2026/10/07 07:42:3.530 45.92690 -129.98758 0.152 0.30 2 1.26 1A.3 tech 3D waves
    628000209 2026/10/07 07:42:27.810 45.93013 -129.98374 0.010 0.50 2 0.26 1A.3 tech 3D waves
    628000206 2026/10/07 06:59:28.390 45.91161 -129.97557 0.362 0.50 2 2.62 1A.3 tech 3D waves
    628000205 2026/10/07 06:54:41.040 45.95890 -129.99770 1.630 0.20 - - 1A.0 tech 3D waves
    628000204 2026/10/07 06:46:43.380 45.96164 -129.99658 1.435 0.10 1 0.18 1A.3 tech 3D waves

    Events last re/processed:
    628000245 2026/10/07 09:50:49.090 45.96030 -129.99580 1.630 0.20 - - 1A.0 tech 3D waves
    628000250 2026/10/07 10:06:17.410 45.95849 -129.99277 1.663 0.20 2 0.77 1A.3 tech 3D waves
    628000253 2026/10/07 10:11:21.860 45.94727 -130.01099 0.260 0.10 2 0.14 1A.3 tech 3D waves
    628000234 2026/10/07 09:17:35.760 45.96054 -129.99567 0.426 0.10 2 0.98 1A.3 tech 3D waves
    628000235 2026/10/07 09:22:25.080 45.92057 -129.98449 0.250 0.60 2 0.24 1A.3 tech 3D waves
    628000237 2026/10/07 09:26:12.680 45.96016 -129.99612 1.364 0.40 1 0.15 1A.3 tech 3D waves
    628000215 2026/10/07 08:20:39.750 45.96420 -129.99635 1.512 0.40 2 0.73 1A.3 tech 3D waves
    628000216 2026/10/07 08:28:7.030 45.94803 -129.99506 0.015 0.20 2 0.28 1A.3 tech 3D waves
    628000217 2026/10/07 08:43:25.660 45.91281 -129.98732 1.172 0.90 2 0.50 1A.3 tech 3D waves
    628000218 2026/10/07 08:43:29.540 45.90729 -129.99748 0.010 1.00 2 1.83 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).