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

Last updated on Mon Feb 16 17:02:07 UTC 2026 ( Mon Feb 16 12:02:07 EST 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
    604700177 2026/02/16 15:23:0.450 45.94782 -129.99142 0.427 0.00 2 0.14 1A.3 tech 3D waves
    604700176 2026/02/16 15:10:18.620 45.92348 -129.98529 1.301 -0.10 2 0.95 1A.3 tech 3D waves
    604700175 2026/02/16 15:08:39.820 45.92501 -129.98457 0.942 0.20 1 0.13 1A.3 tech 3D waves
    604700174 2026/02/16 15:08:10.310 45.91894 -129.97941 3.158 0.40 2 1.44 1A.3 tech 3D waves
    604700173 2026/02/16 15:04:20.870 45.95529 -129.98337 1.530 0.20 2 1.57 1A.3 tech 3D waves
    604700172 2026/02/16 15:02:53.360 45.93674 -129.98809 0.983 -0.10 2 0.10 1A.3 tech 3D waves
    604700171 2026/02/16 14:36:42.410 45.95312 -129.98541 1.686 0.60 1 0.03 1A.3 tech 3D waves
    604700169 2026/02/16 14:09:18.450 45.94836 -129.99044 0.489 0.20 2 0.22 1A.3 tech 3D waves
    604700167 2026/02/16 13:54:28.500 45.94162 -130.00791 0.021 -0.00 2 0.18 1A.3 tech 3D waves
    604700166 2026/02/16 13:37:43.890 45.95940 -129.97967 0.010 0.60 2 1.95 1A.3 tech 3D waves
    604700165 2026/02/16 13:26:38.340 45.93633 -130.01711 1.146 0.30 1 0.27 1A.3 tech 3D waves
    604700164 2026/02/16 13:16:52.140 45.92694 -130.03098 4.408 0.60 2 1.29 1A.3 tech 3D waves
    604700163 2026/02/16 13:12:32.550 45.92763 -129.98284 1.130 0.20 2 0.59 1A.3 tech 3D waves
    604700162 2026/02/16 13:01:21.600 45.92613 -129.97121 1.649 0.00 2 0.92 1A.3 tech 3D waves
    604700161 2026/02/16 12:50:59.270 45.94229 -130.01025 0.488 0.10 2 0.55 1A.3 tech 3D waves
    604700158 2026/02/16 11:04:9.720 45.94725 -130.01861 1.509 0.30 2 1.50 1A.3 tech 3D waves
    604700157 2026/02/16 11:01:59.960 45.94330 -129.99062 0.104 0.20 2 0.56 1A.3 tech 3D waves
    604700156 2026/02/16 10:50:26.920 45.92163 -129.99736 0.887 0.30 2 3.02 1A.3 tech 3D waves
    604700154 2026/02/16 10:38:4.860 45.94087 -130.01308 0.595 0.20 2 0.13 1A.3 tech 3D waves
    604700132 2026/02/16 07:35:15.650 45.93189 -129.97604 0.986 0.20 2 0.93 1A.3 tech 3D waves

    Events last re/processed:
    604700172 2026/02/16 15:02:53.360 45.93674 -129.98809 0.983 -0.10 2 0.10 1A.3 tech 3D waves
    604700173 2026/02/16 15:04:20.870 45.95529 -129.98337 1.530 0.20 2 1.57 1A.3 tech 3D waves
    604700174 2026/02/16 15:08:10.310 45.91894 -129.97941 3.158 0.40 2 1.44 1A.3 tech 3D waves
    604700175 2026/02/16 15:08:39.820 45.92501 -129.98457 0.942 0.20 1 0.13 1A.3 tech 3D waves
    604700176 2026/02/16 15:10:18.620 45.92348 -129.98529 1.301 -0.10 2 0.95 1A.3 tech 3D waves
    604700177 2026/02/16 15:23:0.450 45.94782 -129.99142 0.427 0.00 2 0.14 1A.3 tech 3D waves
    604700169 2026/02/16 14:09:18.450 45.94836 -129.99044 0.489 0.20 2 0.22 1A.3 tech 3D waves
    604700171 2026/02/16 14:36:42.410 45.95312 -129.98541 1.686 0.60 1 0.03 1A.3 tech 3D waves
    604700162 2026/02/16 13:01:21.600 45.92613 -129.97121 1.649 0.00 2 0.92 1A.3 tech 3D waves
    604700163 2026/02/16 13:12:32.550 45.92763 -129.98284 1.130 0.20 2 0.59 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).