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The Global Volcanism Program has no activity reports for Rocard.
The Global Volcanism Program has no Weekly Reports available for Rocard.
The Global Volcanism Program has no Bulletin Reports available for Rocard.
Rocard is a recently discovered submarine volcano about halfway between Tahiti and Mehetia islands. It displayed seismicity in 1966, 1971, and 1972 that may have resulted from submarine eruptions (Talandier and Custer, 1976). Rocks dredged from the volcano in 1986 "exploded" when they reached the surface, suggesting recent lava extrusion that had not yet had time to equilabrate with pressure and temperature conditions on the submerged flanks of the edifice. The summit of Rocard lies 2100 m below sea level east of Teahitia seamount and north of Moua Pihaa seamount. Rocard is much smaller than its neighboring seamounts.
Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).
|Start Date||Stop Date||Eruption Certainty||VEI||Evidence||Activity Area or Unit|
|1972 Jul 4||1972 Jul 19||Confirmed||0||Hydrophonic|
|1971 Sep 6||Unknown||Confirmed||0||Hydrophonic|
|1966 Mar 9||1966 Mar 20||Confirmed||0||Hydrophonic|
This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.
The Global Volcanism Program has no photographs available for Rocard.
The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title.
Aubaud C, Pineau F, Hekinian R, Javoy M, 2005. Degassing of CO2 and H2O in submarine lavas from the Society hotspot. Earth Planet Sci Lett, 235: 511-527.
Barsczus H G, 1981. . (pers. comm.).
Hekinian R, Bideau D, Stoffers P, Cheminee J L, Muhe R, Puteanus D, Binard N, 1991. Submarine intraplate volcanism in the South Pacific: geological setting and petrology of the Society and Austral regions. J Geophys Res, 96: 2109-2138.
Talandier J, 1983. Activite volcanosismique de la region de Tahiti-Mehetia (Pacifique Central Sud) Crise Du Teahitia En Mars Et Avril. Laboratoire Geophysique Tahiti, unpublished ms, 82 p.
Talandier J, Kuster G T, 1976. Seismicity and submarine volcanic activity in French Polynesia. J Geophys Res, 81: 936-948.
Talandier J, Okal E A, 1984a. The volcanoseismic swarms of 1981-1983 in the Tahiti-Mehetia area, French Polynesia. J Geophys Res, 89: 11,216-11,234.