Focal Mechanisms — Near-real-time focal mechanism estimates by Maochuan Zhang (Developing...)
This simple web site provides access to a near-real time catalog of earthquake detections and HYPOINVERSE locations for the Ocean Observatories Initiative cabled observatory at Axial Seamount. The catalog is updated hourly and efforts are made to backfill locations from intervals when the high-sample-rate data are diverted by the Navy but later released. NOTE: There are some inconsistencies in the seismic moments which I am working to resolve.
Catalog last updated at 16-Mar-2026 11:07:51 UTC (16-Mar-2026 04:07:51 Seattle) with locations up to 16-Mar-2026 12:00:00 UTC
Status of 200 Hz waveform data - Streaming
Continuous Amplitude Seismic Monitoring (CASM) — 1-minute RSAM values from vertical seismic data. Using 200 Hz data filtered to 1–8 Hz.
Support for this work comes from the National Science Foundation.
This catalog should be cited as: Wilcock, W. S. D., M. Tolstoy, F. Waldhauser, C. Garcia, Y. J. Tan, D. R. Bohnenstiehl, J. Caplan-Auerbach, R. P. Dziak, A. Arnulf, & M. E. Mann (2016). Seismic constraints on caldera dynamics from the 2015 Axial Seamount eruption, Science, 354, 1395-1399. and
Wilcock, W. S. D., F. Waldhauser, & M. Tolstoy (2017). Catalogs of earthquake recorded on Axial Seamount from January, 2015 through November, 2015 (investigators William Wilcock, Maya Tolstoy, Felix Waldhauser). Interdisciplinary Earth Data Alliance. https://doi.org/10.1594/IEDA/323843.
