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Fisheries acoustic data

Fisheries acoustic data collected from NZ to the Ross Sea

Fisheries acoustic data collected steaming from Wellington to the Ross Sea. Each ‘pixel’ is 20 km long by 50 m deep. The colours show the average amount of sound coming back from each depth (red = strong, blue = weak). Patterns north of 60º S are caused by daily vertical migration of fish to the surface at night.

Rights: National Institute of Water and Atmospheric Research (NIWA)
Published:03 December 2007Size: 45.25 KB