Trajectory map of the 2006–2007 pumice rafts, based on the integrated surface velocity field.

Pumice strandings following the Home Reef (HR) eruption were reported at the following locations: Fiji (∼33 days); Vanuatu (VA, 88 days); New Caledonia (NC, ∼115 days); Willis Island (WI, ∼180 days); Lizard Island (LI, ∼200 days); Mackay (MA, ∼250 days); Broadbeach (BR, ∼250 days). Other abbreviations: LB, Lau Basin; NZ, New Zealand; PNG, Papua New Guinea; MR, Marion Reef; LM, Lady Musgrave Reef; WH, Whitsunday Island; BA, Ballina. Brown shaded region along northeastern Australia is the Great Barrier Reef World Heritage Area. Grey areas without bathymetric information represent continental shelves of <1000 m depth, where geostrophic ocean currents were not calculated. An animated version of the pumice raft trajectory is provided in Supporting Information (Figure S1) to this paper.