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


Last updated on Fri Jul 11 11:19:20 UTC 2025 ( Fri Jul 11 07:19:20 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
    519200033 2025/07/11 07:19:24.680 45.95036 -129.99573 0.357 0.20 2 0.12 1A.3 tech 3D waves
    519200032 2025/07/11 07:19:24.670 45.94952 -129.99614 0.282 0.20 2 0.12 1A.3 tech 3D waves
    519200030 2025/07/11 06:26:48.450 45.94399 -130.01676 0.739 -0.00 2 0.08 1A.3 tech 3D waves
    519200029 2025/07/11 06:21:2.530 45.92706 -129.98846 0.216 0.10 2 0.35 1A.3 tech 3D waves
    519200028 2025/07/11 06:14:14.710 45.94774 -129.99355 1.376 -0.20 1 0.73 1A.3 tech 3D waves
    519200024 2025/07/11 05:15:40.710 45.95358 -130.02401 3.701 0.40 2 0.56 1A.3 tech 3D waves
    519200023 2025/07/11 05:15:38.670 45.92194 -129.98891 0.520 0.10 1 0.49 1A.3 tech 3D waves
    519200022 2025/07/11 05:08:9.720 45.92705 -129.98691 0.890 0.20 1 0.24 1A.3 tech 3D waves
    519200020 2025/07/11 05:01:54.860 45.92888 -130.03788 3.208 0.30 2 1.60 1A.3 tech 3D waves
    519200019 2025/07/11 04:57:56.960 45.94979 -129.99795 0.428 0.20 2 0.21 1A.3 tech 3D waves
    519200018 2025/07/11 04:43:24.230 45.94491 -130.00849 0.111 0.10 2 0.35 1A.3 tech 3D waves
    519200017 2025/07/11 04:18:0.410 45.92448 -129.99553 0.842 0.20 2 0.29 1A.3 tech 3D waves
    519200016 2025/07/11 04:12:24.110 45.93670 -129.99793 0.965 -0.00 2 0.42 1A.3 tech 3D waves
    519200015 2025/07/11 04:11:12.780 45.95789 -129.99212 1.337 0.10 2 0.45 1A.3 tech 3D waves
    519200014 2025/07/11 03:43:48.870 45.95005 -130.02660 1.217 0.00 2 0.53 1A.3 tech 3D waves
    519200013 2025/07/11 03:39:41.460 45.93626 -129.98119 0.073 0.30 2 0.75 1A.3 tech 3D waves
    519200012 2025/07/11 02:55:14.860 45.94266 -130.01719 0.734 0.10 1 0.17 1A.3 tech 3D waves
    519200010 2025/07/11 01:39:30.350 45.93622 -130.02004 1.170 0.10 1 0.15 1A.3 tech 3D waves
    519200008 2025/07/11 01:17:42.740 45.90711 -130.03007 2.682 0.10 2 1.37 1A.3 tech 3D waves
    519200007 2025/07/11 01:05:29.220 45.93042 -130.02493 5.805 0.60 2 3.34 1A.3 tech 3D waves

    Events last re/processed:
    519200033 2025/07/11 07:19:24.680 45.95036 -129.99573 0.357 0.20 2 0.12 1A.3 tech 3D waves
    519200032 2025/07/11 07:19:24.670 45.94952 -129.99614 0.282 0.20 2 0.12 1A.3 tech 3D waves
    519200028 2025/07/11 06:14:14.710 45.94774 -129.99355 1.376 -0.20 1 0.73 1A.3 tech 3D waves
    519200029 2025/07/11 06:21:2.530 45.92706 -129.98846 0.216 0.10 2 0.35 1A.3 tech 3D waves
    519200030 2025/07/11 06:26:48.450 45.94399 -130.01676 0.739 -0.00 2 0.08 1A.3 tech 3D waves
    519200020 2025/07/11 05:01:54.860 45.92888 -130.03788 3.208 0.30 2 1.60 1A.3 tech 3D waves
    519200022 2025/07/11 05:08:9.720 45.92705 -129.98691 0.890 0.20 1 0.24 1A.3 tech 3D waves
    519200023 2025/07/11 05:15:38.670 45.92194 -129.98891 0.520 0.10 1 0.49 1A.3 tech 3D waves
    519200024 2025/07/11 05:15:40.710 45.95358 -130.02401 3.701 0.40 2 0.56 1A.3 tech 3D waves
    519200015 2025/07/11 04:11:12.780 45.95789 -129.99212 1.337 0.10 2 0.45 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).