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


Last updated on Mon Nov 17 00:18:19 UTC 2025 ( Sun Nov 16 19:18:19 EST 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
    532000275 2025/11/16 22:15:11.920 45.92840 -129.98839 1.053 0.50 2 0.27 1A.3 tech 3D waves
    532000274 2025/11/16 22:14:54.490 45.95631 -129.99592 0.006 0.60 2 1.45 1A.3 tech 3D waves
    532000270 2025/11/16 22:03:34.000 45.98008 -130.00166 0.644 0.70 2 1.15 1A.3 tech 3D waves
    532000263 2025/11/16 21:52:34.730 45.96525 -130.04180 1.959 0.60 2 4.42 1A.3 tech 3D waves
    532000252 2025/11/16 21:21:17.740 45.94694 -129.99229 0.387 -0.00 2 0.70 1A.3 tech 3D waves
    532000249 2025/11/16 21:15:10.880 45.92184 -129.98925 1.389 0.50 1 0.25 1A.3 tech 3D waves
    532000245 2025/11/16 20:51:15.710 45.97725 -130.01188 2.492 0.40 2 1.40 1A.3 tech 3D waves
    532000242 2025/11/16 20:32:37.780 45.94969 -129.99785 0.065 0.60 2 0.98 1A.3 tech 3D waves
    532000232 2025/11/16 14:43:47.450 45.96921 -129.99893 2.198 0.40 2 0.58 1A.3 tech 3D waves
    532000229 2025/11/16 14:35:18.670 45.97042 -129.99775 2.073 0.00 2 0.57 1A.3 tech 3D waves
    532000228 2025/11/16 14:30:43.440 45.97086 -129.99748 2.087 -0.00 1 0.47 1A.3 tech 3D waves
    532000227 2025/11/16 14:27:27.190 45.96941 -129.99882 2.221 0.70 2 0.75 1A.3 tech 3D waves
    532000225 2025/11/16 14:23:30.940 45.96167 -129.99862 0.314 0.60 2 1.35 1A.3 tech 3D waves
    532000222 2025/11/16 14:21:44.690 45.93386 -130.00826 0.102 0.30 2 1.04 1A.3 tech 3D waves
    532000220 2025/11/16 14:20:35.350 45.96912 -129.99968 2.242 0.70 2 1.12 1A.3 tech 3D waves
    532000219 2025/11/16 14:19:27.590 45.96634 -129.99954 1.961 0.70 2 1.13 1A.3 tech 3D waves
    532000216 2025/11/16 14:18:16.220 45.96947 -130.00006 1.624 0.40 1 0.39 1A.3 tech 3D waves
    532000205 2025/11/16 13:33:0.690 45.95161 -129.99822 0.258 0.20 2 0.21 1A.3 tech 3D waves
    532000204 2025/11/16 13:32:55.400 45.91378 -129.97443 0.010 0.40 2 3.12 1A.3 tech 3D waves
    532000182 2025/11/16 11:52:6.700 46.01255 -129.98029 1.849 0.50 2 7.92 1A.3 tech 3D waves

    Events last re/processed:
    532000270 2025/11/16 22:03:34.000 45.98008 -130.00166 0.644 0.70 2 1.15 1A.3 tech 3D waves
    532000274 2025/11/16 22:14:54.490 45.95631 -129.99592 0.006 0.60 2 1.45 1A.3 tech 3D waves
    532000275 2025/11/16 22:15:11.920 45.92840 -129.98839 1.053 0.50 2 0.27 1A.3 tech 3D waves
    532000249 2025/11/16 21:15:10.880 45.92184 -129.98925 1.389 0.50 1 0.25 1A.3 tech 3D waves
    532000252 2025/11/16 21:21:17.740 45.94694 -129.99229 0.387 -0.00 2 0.70 1A.3 tech 3D waves
    532000263 2025/11/16 21:52:34.730 45.96525 -130.04180 1.959 0.60 2 4.42 1A.3 tech 3D waves
    532000242 2025/11/16 20:32:37.780 45.94969 -129.99785 0.065 0.60 2 0.98 1A.3 tech 3D waves
    532000245 2025/11/16 20:51:15.710 45.97725 -130.01188 2.492 0.40 2 1.40 1A.3 tech 3D waves
    532000216 2025/11/16 14:18:16.220 45.96947 -130.00006 1.624 0.40 1 0.39 1A.3 tech 3D waves
    532000219 2025/11/16 14:19:27.590 45.96634 -129.99954 1.961 0.70 2 1.13 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).