Description: <DIV STYLE="text-align:Left;font-size:12pt"><DIV><DIV><P STYLE="margin:0 0 0 0;"><SPAN>BTM Fine BPI – </SPAN><SPAN><SPAN>this mosaic dataset is part of a series of seafloor terrain datasets aimed at providing a consistent baseline to assist users in consistently characterizing Aotearoa New Zealand seafloor habitats. This series has been developed using the tools provided within the Benthic Terrain Model (BTM [v3.0]) across different multibeam echo-sounder datasets. </SPAN></SPAN></P><P /><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>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 km</SPAN></SPAN><SPAN><SPAN>2</SPAN></SPAN><SPAN><SPAN>. Consistency and compatibility of the benthic terrain datasets have been achieved by utilising a common projected coordinate system (WGS84 Web Mercator), resolution (10 m), and by using a standard classification dictionary (also utilised by previous BTM studies in NZ). However, we advise caution when comparing the classification between different survey areas.</SPAN></SPAN></P><P /><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>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. </SPAN></SPAN></P><P /><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>The index of the original MBES survey surface models used in this analysis can be accessed from </SPAN></SPAN><A href="https://data.linz.govt.nz/layer/95574-nz-bathymetric-surface-model-index/" STYLE="text-decoration:underline;"><SPAN STYLE="text-decoration:underline;"><SPAN>https://data.linz.govt.nz/layer/95574-nz-bathymetric-surface-model-index/</SPAN></SPAN></A></P><P /><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>The full report and description of available output datasets are available at: </SPAN></SPAN><SPAN STYLE="font-style:italic;"><SPAN>Link to be added in late November 2022</SPAN></SPAN></P><P /><P /></DIV></DIV></DIV>
Copyright Text: Department of Conservation, Contains data sourced from the LINZ Data Service licensed for reuse under CC BY 4.0.
Description: This series of seafloor terrain datasets 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 datasets developed are aimed at providing a consistent 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:-Link to be added in late November 2022