NIWA Ocean Survey 20/20

Coastal and Marine Data Portal

OS2020 Seismic and Multibeam

seismic swath map2

This project provides coverage maps showing where NIWA has high resolution multibeam and seismic data around New Zealand.

NIWA’s high resolution multibeam and seismic coverage

This project provides coverage maps showing where NIWA has high resolution multibeam and seismic data around New Zealand. The region covered is one of the largest areas of deep-water seabed under national jurisdiction in the world. Associated metadata provides information about voyage number, vessel used and systems used, it also directs the user to the data custodian from whom the actual data and further information can be sourced.

The data is captured from New Zealand and international vessels undertaking research in the region for a variety of projects. The large number of undersea volcanoes, submarine channels and broad plateaux are part of the complex geology of the seabed around wider New Zealand. These features are largely due to New Zealand sitting across two tectonic plates, part of the “Ring of Fire” of tectonic and volcanic activity around the Pacific Ocean.

NewZealand

The complex bathymetry around New Zealand can be seen in this map, with the boundary between the Australian and Pacific tectonic plates running from the northeast (Kermadec Trench) to the southwest (Macquarie Ridge).