Geothermal Glossary and Reports
Bore - Any structure, well or hole in the ground, which is drilled or constructed. This includes bores that access underground resources (such as groundwater, geothermal water or geothermal heat) and those not accessing underground resources (such as monitoring or geotechnical bores).
Downhole Heat Exchanger - A device installed down a bore to remove heat from a geothermal field without removing geothermal fluid. Generally uses freshwater circulated through a heat exchanger at depth.
Geothermal energy - Energy derived or derivable from and produced within the earth by natural heat phenomenon; includes all geothermal water (Resource Management Act 1991).
Geothermal field/system - A discrete area where geothermal energy is known to be found and includes all areas that are hydrologically linked. It can include a body of geothermal water, material containing heat or energy surrounding the water, and all plants, animals and surface features dependant on it.
Geothermal fluid - Combined geothermal water and steam, undifferentiated proportions of either state, or a system that utilises both steam and water.
Geothermal surface feature - Includes, but is not limited to, mud pools, sinters, hot springs, hot pools, fumeroles, tomos, geysers, geothermally influenced freshwater systems, steam vents and areas of hot ground. Surface features may or may not be of natural origin, and includes extinct or intermittent features.
Geothermal water - Water heated within the earth by natural phenomenon to a temperature of 30°C or more; includes all steam, water, water vapour and every mixture of these that have been heated naturally.
Reinjection - Geothermal fluid being pumped back into the ground to the same aquifer from which it was sourced.
Water - means water in all its physical forms whether flowing or not and whether over or under the ground. It includes fresh water, coastal water, and geothermal water. It does not include water in any form while in any pipe, tank, or cistern.
- Review of Geothermal Provisions of the Bay of Plenty Regional Water and Land Plan: Tauranga Geothermal Resource (923.1KB, pdf) N/C
- Valuing Uses of the Bay of Plenty Geothermal Resource (1.38MB, pdf) $12
- 2014 Thermal Infrared Survey of the Rotorua and Lake Rotokawa-Mokoia Geothermal Fields (6.60MB, pdf) $10
- 3-D Geological Model of Rotorua (7171KB, pdf) $12
- A 3-D Model of the Rotorua Geothermal Field, data inventory and data validation (6513KB, pdf) $12
- Assessing significant geothermal features in the Bay of Plenty region - the application and testing of Method 4 (1.30MB, pdf) $12
- Chemistry of the Rotorua Geothermal Field Part 1: Natural Geothermal Features (1.1 MB, pdf), $15
- Chemistry of the Rotorua Geothermal Field Part 2: Discharging Wells (698 KB, pdf), $15
- Chemistry of the Rotorua Geothermal Field Part 3: Hydrology (600 KB, pdf), $15
- Development of methodology to assess significant geothermal features (1.46MB, pdf) $12
- Geothermal Feature Resurvey of Kuirau Park and Arikikapakapa Areas, Rotorua (AVAILABLE ON CD ONLY)
- Mixing of Tikitere Geothermal Discharges with Sewage (41 KB, pdf), $10
- Rotorua Geothermal Bore Water Level Assessment 2014 (2.06MB, pdf) $12
- Rotorua Geothermal Home Heat Investigation (2.78 MB, pdf) $12
- Rotorua Geothermal System: Measurements and Observations - Quarterly reports (AVAILABLE AS HARDCOPY ONLY) $15
- Rotorua Surface Feature Monitoring Data Review 2008-2014 (17.91MB, pdf) $15 NOTE LARGE FILE
- Tauranga Basin Geothermal Reservoir Model (13.71 MB, pdf) $12
- Tauranga Model Update 2016 (7.06MB, pdf) $10
- Geothermal Vegetation Types of the Taupo Volcanic Zone (9613KB, pdf) $15
Waimangu Geothermal Field, Rotorua District
Image: © GNS Science