This is master record for 3D hydrogeological models used to describe and model behaviour of NZ groundwater systems

This is master record for NZ hydrogeological models used to describe and model behaviour of NZ groundwater systems

This data set provides an update of New Zealand’s depth to hydrogeological basement map. Depth to hydrogeological basement can be loosely defined as the ‘base of aquifers’; or more strictly as ‘the depth to where primary porosity and permeability of geological material is low enough such that flued volumes and flow rates can be considered negligible’. For more detail on the process and methods, see Westerhoff et al. (2019). New Zealand groundwater atlas: depth to hydrogeological basement. Lower Hutt (NZ): GNS Science. 19 p. Consultancy Report 2019/140. DOI: https://doi.org/10.21420/FQXD-VY44 Cite data as: GNS Science. (2019). Depth to hydrogeological basement [Data set]. GNS Science, Ministry for the Environment. https://doi.org/10.21420/FQXD-VY44 Cite report describing the data as: Westerhoff et al. (2019). New Zealand groundwater atlas: depth to hydrogeological basement. Lower Hutt (NZ): GNS Science. 19 p. Consultancy Report 2019/140.

Hawkes Bay Regional Council commissioned SkyTEM Australia to collect SkyTEM data for 3D aquifer mapping. In February 2020, 1235 km of SkyTEM data were collected over the Poukawa and Otane Basins. Data processing was carried out by GNS Science to remove electromagnetic noise. The retained data was used to develop both smooth and sharp resistivity models for the area. The standard depth of investigation varies from 60 to 490 m for the smooth resistivity model. External Quality Control was provided by Aarhus University HydroGeophysics Group. The data is owned by Hawkes Bay regional council. Cite as: Rawlinson, Z.J.; Westerhoff, R.S.; Kellett, R.L.; Pederson, J.B.; Maurya, J.B.; Foged, N. 2021 Hawke’s Bay 3D Aquifer Mapping Project: Poukawa and Otane Basin SkyTEM data processing and resistivity models. GNS Science consultancy report 2020/138. 76 p. [June 2021]