Cyclone Gabrielle

GNS Science photos taken from aircraft following Cyclone Gabrielle on the North Island, February 2023. The images are geolocated within an ArcGIS map application.

Provides polygons of approximate flood areas derived from Sentinel-1 satellite radar imagery captured at various times on 14/02/2023 near the peak of the Cyclone Gabrielle event in the North Island of New Zealand. Areas of coverage include the Hauraki, Thames-Coromandel and Hastings Districts, and Napier City.

Explore this digital geospatial database of approximately 600,000 New Zealand river segments and related catchments.

Get estimates of peak flood flows and understand the magnitude and frequency of floods across New Zealand.

Get estimates of the magnitude and frequency of high intensity rainfall for a range of return periods and event durations at any point in New Zealand.

These geological units comprised of gravel, sand and mud were wholly or partly deposited in the Holocene (in the last 11,700 years) as a result of water-borne alluvial floodplain and fan processes. The units are indicative of the extent of Holocene flooding events preserved in the sedimentary record.  These data have been extracted from the geological units layer of the digital 1:250 000 Geological Map of New Zealand NZL_GNS_250K_Geology 3rd edition (2020) published by GNS Science https://doi.org/10.21420/JEAP-4J81

Coastlines digitised by New Zealand’s Changing Coast team at the University of Auckland as part of the Resilience to Nature's Challenges National Science Challenge. ​Lines are interpreted and digitised from high resolution satellite imagery following Cyclone Gabrielle. The lines digitised are typically the toe of the dune. Following the storm this often marked by a pronounced scarp of the dune face. ​This dataset is a research product and has not been peer reviewed. No warranty is provided with respect to the accuracy of the lines. Care should be used when using the lines in any decision making. Please contact Murray Ford at the University of Auckland to discuss any applications of this dataset.

Coastlines digitised by New Zealand’s Changing Coast team at the University of Auckland as part of the Resilience to Nature's Challenges National Science Challenge. Lines are interpreted and digitised from aerial photographs or high resolution satellite imagery prior to Cyclone Gabrielle. The lines digitised are typically the toe of the dune. This dataset is a research product and has not been peer reviewed. No warranty is provided with respect to the accuracy of the lines. Care should be used when using the lines in any decision making. Please contact Murray Ford at the University of Auckland to discuss any applications of this dataset.