Hawaii-2 observatory pioneers opportunities for remote instrumentation in ocean studies


  • R. Butler,

    1. Incorporated Research Institutions for Seismology (IRIS), 1200 New York Ave. NW, Washington, DC 20005, USA
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  • A. D. Chave,

  • F. K. Duennebier,

  • D. R. Yoerger,

  • R. Petitt,

  • D. Harris,

  • F. B. Wooding,

  • A. D. Bowen,

  • J. Bailey,

  • J. Jolly,

  • E. Hobart,

  • J. A. Hildebrand,

  • A. H. Dodeman


Beneath 5000 m of water midway between Hawaii and California, the Hawaii-2 Observatory (H20) rests on the seafloor (Figure 1). Telemetry and power come to this pioneer, deep-ocean scientific observatory via a retired telephone cable, Hawaii-2, donated by AT&T to the Incorporated Research Institutions for Seismology (IRIS) Consortium for the benefit of the scientific community. H20 is the first Global Seismographic Network (GSN) station on the seafloor.With a suite of wet-mateable connectors on a junction box (j-box), H20 offers marine scientists a new opportunity to deploy and operate remote instrumentation in the middle of the ocean.