NZ Seabed Geomorphology - NZ Bathymetric Surface Model

View on Map View ArcGIS Service These surface models have been created by LINZ from publicly funded single- or multi-beam data collected in the New Zealand coastal area since early 1998, and have been provided to DOC from the LINZ Data Service on request for this series. Please refer to the LINZ Bathymetric Index Data Dictionary for further information about the attributes of this dataset. This dataset is part of a series of seafloor terrain datasets that has been developed using the tools provided within the current release of the Benthic Terrain Model (BTM [v3.0]) across different multibeam echosounder datasets. The developed datasets aim to provide a baseline to assist users in consistently characterizing Aotearoa New Zealand seafloor habitats. The series includes derived outputs from 50 MBES survey sets conducted between 1999 and 2020 from throughout the New Zealand marine environment (where available) covering an area of approximately 52,000 km2. Consistency and compatibility of the benthic terrain datasets have been prioritised by utilising a common projected coordinate system (WGS84 Web Mercator), resolution (10m), and by using a standard classification dictionary (also utilised by previous BTM studies in NZ) for the terrain classification dataset. Derived BTM outputs include the Bathymetric Position Index (BPI); Surface Derivative; Rugosity; Depth Statistics; Terrain Classification. A standardised digital surface model, and derived hillshade and aspect datasets have also been made available. The full report and description of available output datasets are available at: https://www.doc.govt.nz/globalassets/documents/science-and-technical/drds367entire.pdf