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

Last updated on Sun Feb 15 00:22:02 UTC 2026 ( Sat Feb 14 19:22:02 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
    604500080 2026/02/14 16:31:53.030 45.90378 -129.99526 0.170 0.60 2 2.24 1A.3 tech 3D waves
    604500079 2026/02/14 16:02:20.540 45.94176 -129.98643 0.324 0.40 2 0.55 1A.3 tech 3D waves
    604500078 2026/02/14 15:23:5.950 46.00813 -129.96836 0.111 0.50 2 6.91 1A.3 tech 3D waves
    604500076 2026/02/14 15:20:31.790 45.95193 -129.98288 0.636 0.40 2 0.64 1A.3 tech 3D waves
    604500075 2026/02/14 15:20:24.380 45.97840 -130.01236 0.285 0.50 2 1.27 1A.3 tech 3D waves
    604500073 2026/02/14 14:52:58.560 45.92560 -129.98409 1.074 0.20 2 0.54 1A.3 tech 3D waves
    604500068 2026/02/14 13:04:16.570 45.94739 -129.99192 0.514 -0.10 2 0.17 1A.3 tech 3D waves
    604500067 2026/02/14 12:57:28.710 45.96128 -129.99394 1.509 0.20 1 0.29 1A.3 tech 3D waves
    604500063 2026/02/14 12:39:14.310 45.88101 -130.02046 0.010 0.90 2 8.72 1A.3 tech 3D waves
    604500061 2026/02/14 12:28:45.880 45.95028 -129.99661 0.291 0.30 2 0.11 1A.3 tech 3D waves
    604500060 2026/02/14 12:25:25.990 45.95110 -129.99621 0.344 0.30 1 0.05 1A.3 tech 3D waves
    604500055 2026/02/14 12:03:6.670 45.91108 -130.05279 9.898 0.20 2 9.43 1A.3 tech 3D waves
    604500057 2026/02/14 12:03:32.150 45.91506 -129.99275 0.326 0.20 2 0.72 1A.3 tech 3D waves
    604500056 2026/02/14 12:03:16.910 45.91871 -129.98053 0.242 0.30 2 1.25 1A.3 tech 3D waves
    604500053 2026/02/14 12:02:6.680 45.92213 -129.98800 1.013 0.20 2 1.10 1A.3 tech 3D waves
    604500052 2026/02/14 11:54:32.430 45.92353 -129.96427 1.297 0.10 1 0.48 1A.3 tech 3D waves
    604500050 2026/02/14 11:53:14.140 45.92222 -129.96595 1.531 0.50 2 1.41 1A.3 tech 3D waves
    604500049 2026/02/14 11:49:2.890 45.92738 -129.98568 0.454 -0.10 1 0.17 1A.3 tech 3D waves
    604500047 2026/02/14 11:25:13.570 45.94009 -129.98625 1.199 -0.10 1 0.49 1A.3 tech 3D waves
    604500046 2026/02/14 11:21:0.710 45.93154 -129.96880 0.747 0.10 2 0.85 1A.3 tech 3D waves

    Events last re/processed:
    604500006 2026/02/14 06:37:28.790 45.93798 -129.98550 1.240 -0.10 1 0.21 1A.3 tech 3D waves
    604500014 2026/02/14 07:08:1.660 45.94305 -130.01558 0.555 0.20 1 0.33 1A.3 tech 3D waves
    604500017 2026/02/14 08:53:44.780 45.93235 -129.97522 1.469 0.20 1 0.13 1A.3 tech 3D waves
    604500018 2026/02/14 09:12:16.200 45.92638 -129.98362 1.218 0.50 1 0.26 1A.3 tech 3D waves
    604500019 2026/02/14 09:19:58.850 45.92373 -129.98437 1.418 0.90 2 2.31 1A.3 tech 3D waves
    604500028 2026/02/14 09:53:48.270 45.94158 -130.01709 0.626 1.00 2 0.18 1A.3 tech 3D waves
    604500031 2026/02/14 09:57:26.470 45.96693 -129.90374 1.934 0.40 2 7.24 1A.3 tech 3D waves
    604500034 2026/02/14 09:58:8.420 46.00701 -129.96551 2.492 0.20 2 8.86 1A.3 tech 3D waves
    604500044 2026/02/14 10:53:51.800 45.94336 -129.98874 0.303 0.00 2 0.72 1A.3 tech 3D waves
    604500046 2026/02/14 11:21:0.710 45.93154 -129.96880 0.747 0.10 2 0.85 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).