NIWA Ocean Survey 20/20

Coastal and Marine Data Portal

Data and Reports

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This page provides facilities to search for, and optionally download, data files and reports, etc, from the OS2020 Bay of Islands coastal survey.

This simple browse facility allows you to look through a list of all records in the catalogue, select any items of interest and possibly download any relevant files, or contact the person responsible.

To search for datasets using keywords, please use the search page (visit Search Data).

Direct access to the GeoNetwork node is available here for a more complete, but complex, search facility.

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Bay of Islands OS20/20 Survey Report Chapter 01: Introduction

This introductory chapter provides a summary, in the context of the wider Oceans Survey 20/20 (OS20/20) programme established by Cabinet in November 2004, of the Bay of Islands OS20/20 programme that ...

Bay of Islands OS20/20 Survey Report Chapter 02: Mapping

Phase 1 of the OS20/20 Bay of Islands Coastal Project consisted of the collection of multibeam, side-scan and aerial photography data to aid in the delineation of seabed habitats and in the planning o...

Bay of Islands OS20/20 Survey Report Chapter 03: Seafloor and subsurface sediment characteristics

The surface sediment results support and enhance the findings of the Ocean Survey 20/20 Bay of Islands (BOI) Phase 1 Desktop study, namely that:
•Gravels were found immediately adjacent to headlands ...

Bay of Islands OS20/20 Survey Report Chapter 04: Recent sedimentation rates

Sediment cores were taken from the seabed in the Bay of Islands and radiometric dating used to quantify the sedimentation history in the bay over the last 100–150 years. Cores were taken from an area ...

Bay of Islands OS20/20 Survey Report Chapter 05: Determining sediment sources and dispersion in the Bay of Islands

Sediment forensic techniques were used to provide information on sediment sources, dispersion and transport across the Bay of Islands that could not be easily determined in any other way. The forensic...

Bay of Islands OS20/20 Survey Report Chapter 06: Sediment transport model

Sediment transport in the Bay of Islands study region was investigated through a combination of observational data from instrument deployments and the development of a numerical model. A mooring array...

Bay of Islands OS20/20 Survey Report Chapter 07: Physical Oceanography

To answer questions regarding the fate of sediments and pollutants in the Bay of Islands, a combined observation and modelling programme was designed to measure the currents in the Bay of Islands. The...

Bay of Islands OS20/20 Survey Report Chapter 08: Water column and water quality

The desktop study (MacDiarmid et al. 2009) indicated that very little information existed on the physical, chemical and biological parameters in the water column of the Bay of Islands (BOI) and adjace...

Bay of Islands OS20/20 Survey Report Chapter 09: Seafloor assemblage and habitat assessment using DTIS

Mapping of seabed habitats and biodiversity is a fundamental first step in understanding ecological processes in the sea and the influence on these processes of natural and man-made changes to the env...

Bay of Islands OS20/20 Survey Report Chapter 10: Shallow rocky reefs

Shallow rocky reefs are some of the most accessible marine habitats, and are important for social, cultural, economic and environmental reasons. We set out to describe the species present on shallow r...

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