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

Last updated on Fri Jan 2 15:41:16 UTC 2026 (Fri Jan 2 15:41:16 UTC 2026EST)

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

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
    600100156 2026/01/01 03:04:13.540 45.92977 -129.97384 1.529 0.20 1 0.37 1A.3 tech 3D waves
    600100137 2026/01/01 02:24:37.560 45.93424 -129.98137 1.375 0.20 2 0.66 1A.3 tech 3D waves
    600100132 2026/01/01 01:58:27.610 45.94043 -129.98858 0.705 0.40 1 0.19 1A.3 tech 3D waves
    600100131 2026/01/01 01:54:8.370 45.94660 -130.01132 0.231 0.20 1 0.20 1A.3 tech 3D waves
    600100122 2026/01/01 01:38:55.830 45.94619 -130.00906 0.133 0.90 2 0.65 1A.3 tech 3D waves
    600100121 2026/01/01 01:38:47.560 45.94586 -130.01121 0.163 0.80 2 0.13 1A.3 tech 3D waves
    600100111 2026/01/01 01:22:56.320 45.91886 -129.99044 1.210 0.50 1 0.56 1A.3 tech 3D waves
    600100110 2026/01/01 01:22:27.450 45.94062 -129.98771 0.509 0.00 2 0.25 1A.3 tech 3D waves
    600100109 2026/01/01 01:21:50.770 45.93984 -129.98785 0.904 0.40 2 0.32 1A.3 tech 3D waves
    600100104 2026/01/01 01:17:22.720 45.93567 -129.98569 1.148 0.30 2 0.46 1A.3 tech 3D waves
    600100101 2026/01/01 01:13:38.390 45.94101 -129.98815 0.509 0.40 1 0.24 1A.3 tech 3D waves
    600100094 2026/01/01 01:06:23.650 45.94124 -129.98804 0.402 0.20 1 0.22 1A.3 tech 3D waves
    600100089 2026/01/01 01:00:29.260 45.94116 -129.98929 0.486 0.30 1 0.26 1A.3 tech 3D waves
    600100085 2026/01/01 00:59:7.430 45.93889 -129.98453 1.286 0.70 1 0.16 1A.3 tech 3D waves
    600100084 2026/01/01 00:58:18.450 45.94074 -129.98763 0.596 0.50 2 0.44 1A.3 tech 3D waves
    600100083 2026/01/01 00:57:51.900 45.94137 -129.98888 0.575 0.20 1 0.33 1A.3 tech 3D waves
    600100081 2026/01/01 00:56:30.320 45.94132 -129.98892 0.492 0.50 1 0.17 1A.3 tech 3D waves
    600100080 2026/01/01 00:54:28.860 45.93886 -129.98519 1.032 0.50 2 0.23 1A.3 tech 3D waves
    600100079 2026/01/01 00:54:10.840 45.93788 -129.98218 1.323 -0.10 2 0.47 1A.3 tech 3D waves
    600100074 2026/01/01 00:53:9.600 45.94112 -129.98806 0.304 0.50 1 0.26 1A.3 tech 3D waves

    Events last re/processed:
    536500157 2025/12/31 23:50:1.210 45.92655 -129.98893 1.031 0.60 2 2.28 1A.3 tech 3D waves
    536500158 2025/12/31 23:51:22.740 45.92670 -129.98440 1.205 0.20 1 0.26 1A.3 tech 3D waves
    600100000 2026/01/01 00:00:48.120 45.94104 -129.98540 1.290 0.30 2 0.66 1A.3 tech 3D waves
    600100005 2026/01/01 00:20:28.140 45.95015 -129.99601 0.921 0.20 1 0.42 1A.3 tech 3D waves
    600100009 2026/01/01 00:21:2.830 45.92207 -129.99445 0.594 0.40 2 0.80 1A.3 tech 3D waves
    600100011 2026/01/01 00:21:56.620 45.91747 -129.98653 1.724 0.70 1 0.91 1A.3 tech 3D waves
    600100012 2026/01/01 00:23:35.690 45.94081 -129.98795 0.412 0.50 1 0.18 1A.3 tech 3D waves
    600100013 2026/01/01 00:23:39.330 45.94073 -129.98797 0.378 0.60 1 0.25 1A.3 tech 3D waves
    600100014 2026/01/01 00:23:53.830 45.91673 -129.99426 1.350 0.40 1 0.62 1A.3 tech 3D waves
    600100016 2026/01/01 00:24:18.790 45.93849 -129.98628 0.897 0.30 2 0.44 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).