Axial Seamount Earthquake Catalog

by William Wilcock

and Maochuan Zhang

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 (Already fixed!).

Catalog last updated at 18-Apr-2024 17:03:25 UTC (18-Apr-2024 10:03:25 Seattle) with locations up to 18-Apr-2024 17:00:00 UTC

Status of 200 Hz waveform data - Streaming

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.


Maps of Recent Activity
Histograms of Recent Activity
Histograms of 2015 Eruption
Histograms of Full Catalog
Daily Catalogs and Maps
Full Catalog

Maps of Recent Activity

MapCaldera1day.jpg MapCaldera7day.jpg MapCaldera30day.jpg
MapRegional1day.jpg MapRegional7day.jpg MapRegional30day.jpg

Histograms of Recent Activity

histogram7day.jpg histogram30day.jpg histogram1Year.jpg

Histograms of 2015 Eruption

histogramEruption2015.jpg histogramEruption60day.jpg histogramEruption15day.jpg

Histograms of Full Catalog

histogramAll1.jpg histogramAll2.jpg
histogramAll3.jpg histogramAll4.jpg

Daily Catalogs and Maps

Caldera Maps map1.html

Regional Maps map2.html

Daily HYPO71 files hypo71.html

Daily ph2dt input files ph2dt.html

Full Catalog (Big Files)

HYPO71 style catalog - hypo71.dat

Arrival time data in form of input catalog for ph2dt algorithm of HYPODD - ph2dtInputCatalog.dat