South Dunedin water table forecasts
Grid and vector (poly) datasets representing a forecast state of groundwater in Dunedin under present (SLR=000) and future conditions of sea level rise (SLR=010, 020, 030 cm etc where [OFF] represents increments of changing sea level). Layers are in NZTM (NZGD2000 EPSG: 2193) coordinates, named using a convention where: GWL= groundwater level (m, NZVD2016 EPSG:7879); DTW = depth to groundwater (m, rel to ground LiDAR 2021); MED = condition at median level; p95 = condition at a high 95th percentile level; MHWS = condition at mean high water springs; ESL = condition at storm-tide of particular extreme sea level ARI; RAINstor = maximum possible subsurface storage of rainfall (in mm); [OFF] = an amount of sea level rise in 10cm increments; [ARI] = average recurrence interval of ESL in years; [AFI] = average recurrence interval of a particular 12hr rainfall exceedance in years. Polygons define either places where groundwater is emergent (DTW≤0) under a given forecast, or places where a rainfall depth at AFI exceeds the available subsurface storage (and any infiltration to groundwater should no longer be possible).
Simple
- Date
- Purpose
- A series of grid datasets that forecast of the changing state of groundwater as sea levels rise, as groundwater level (GWL in m NZVD2016) and depth to groundwater (DTW). Derivative grid and polygon (vector) datasets indicate places where groundwater will reach the surface and become emergent, or where amounts of rain exceed the subsurface volume available to store infiltration as groundwater.
- Credit
- Simon Cox/GNS Science 2023, to accompany GNS Science report 2023/43, DOI: 10.21420/5799-N894, ISBN: 978-1-99-105850-8
- Status
- Completed
- Maintenance and update frequency
- As needed
- Theme
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- Forecast
- Sea level rise
- Groundwater
- Dunedin
- Metadata language
- English
- Character set
- UTF8
- Topic category
-
- Geoscientific information
N
S
E
W
- File identifier
- 9b38520c-6080-4f57-bdd7-e2e1c1c71b94 XML
- Metadata language
- English
- Character set
- UTF8
- Parent identifier
- Dunedin groundwater monitoring and forecasting datasets 06a86338-a0fa-436f-9c80-2d8da1dcd64f
- Hierarchy level
- Dataset
- Hierarchy level name
- dataset
- Date stamp
- 2024-03-12T11:23:11
- Metadata standard name
- ISO 19139 Geographic Information - Metadata - Implementation Specification
- Metadata standard version
- 2007
Overviews
Spatial extent
N
S
E
W
Provided by
Associated resources
Not available