Please subscribe to the ACO-status mailing list for future ACO operational advisories and alerts.

Real Time Streaming Audio and Spectrograph are currently down due to connectivity issues.

The ACO website will be down on 25 Nov 2017 from 07:00 to 13:00 HST and 13 Jan 2018 from 07:00 to 17:00 HST for scheduled maintenance.

New ACO instruments were installed during the ACO-3 cruise on 2014/11/01. Click here for ACO-3 videos.

Mailing Lists

ACO-Status List

To receive up-to-date information regarding the ACO operational advisories and alerts, please subscribe to the mailing list below. Follow the next link and click on "Join or Leave ACO-STATUS"

ACO status notifications


ACO-Acoustics List

Join this mailing list for discussions about acoustics and the ALOHA Cabled Observatory. Contact Fernando Santiago-Mandujano (mandujan(at)soest(dot)hawaii(dot)edu) if you are interested in being added to this list.