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Underway geophysics1

L.M. Kalnins2 and the Expedition 330 Scientists2


Integrated Ocean Drilling Program (IODP) Expedition 330 to the Louisville Seamount Trail had long transits of ~1500 km from Auckland, New Zealand, to the first drill site on Canopus Guyot and from the last drill site on Hadar Guyot to Auckland, New Zealand, as well as substantial transits between sites (Figs. F1, F2). In total, more than 4600 km of underway geophysical data were collected during the expedition. Bathymetric and magnetic data were collected using a 3.5 kHz echo sounder and a towed marine magnetometer, respectively, and positioned using a gyrocompass and GPS navigation system.

1 Kalnins, L.M., and the Expedition 330 Scientists, 2012. Underway geophysics. In Koppers, A.A.P., Yamazaki, T., Geldmacher, J., and the Expedition 330 Scientists, Proc. IODP, 330: Tokyo (Integrated Ocean Drilling Program Management International, Inc.). doi:10.2204/iodp.proc.330.109.2012

2Expedition 330 Scientists’ addresses. Correspondence author:

Publication: 11 February 2012
MS 330-109