PMEL Publications Abstract

FY 2007

Volcanic eruptions at East Pacific Rise crest near 9°50'N

Cowen, J.P., D.J. Fornari, T.M. Shank, B. Love, B. Glazer, A.H. Treusch, R.C. Holmes, S.A. Soule, E.T. Baker, M. Tolstoy, and K.R. Pomraning

Eos Trans. AGU, 88(7), doi: 10.1029/2007EO070001, 81–82 (2007)

Evidence for recent volcanic eruptions along the fast spreading East Pacific Rise (EPR) crest near 9°50'N spanning about 4 to 5 months of activity was discovered in April and May 2006 as a result of studies related to the U.S. National Science Foundation's (NSF) Ridge2000 (R2K) program. In April, during routine recovery and redeployment of ocean-bottom seismometers (OBS) at the EPR R2K Integrated Study Site (ISS) near 9°50'N, eight of 12 OBS could not be recovered. Anomalous turbidity and temperature structure in the water column along the ridge axis confirmed scientists' suspicions that the OBS were trapped by a new lava flow.

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