Search Results

vadose zone original
dcterms created equal to or less than 2017-10-13T04:01:55Zequal to or more than 2017-10-13T04:01:55Z
definition The areas below the ground where void spaces are filled with a mixture of water under pressure less than atmospheric which includes water held by capillarity and air (gases) under atmospheric pressure.
watertable original
dcterms created equal to or less than 2017-10-13T04:01:55Zequal to or more than 2017-10-13T04:01:55Z
definition The groundwater surface in an unconfined aquifer or confining bed at which the pore pressure is atmospheric. It can be measured by installing shallow wells extending a few metres into the saturated zone and then determining the water level in those wells.
GDE potential original
dcterms created equal to or less than 2017-10-13T04:01:55Zequal to or more than 2017-10-13T04:01:55Z
definition Describes ecosystems in terms of their 'potential to be interacting with groundwater'. The classes mapped in the GDE Atlas are:
• High potential for groundwater interaction
• Moderate potential for groundwater interaction
• Low potential for groundwater interaction
The term 'potential' is used to reflect the uncertainty inherent in identifying ecosystems as groundwater-dependant using desktop methods. Finer scale studies or fieldwork are needed to confirm this analysis.
LandsatTM5 original
dcterms created equal to or less than 2017-10-13T04:01:55Zequal to or more than 2017-10-13T04:01:55Z
definition Landsat Thematic Mapper 5 – a medium resolution satellite image sensor obtained twice monthly over Australia. Data can be obtained from United States Geological Survey.
MODIS original
dcterms created equal to or less than 2017-10-13T04:01:55Zequal to or more than 2017-10-13T04:01:55Z
definition MODerate resolution Imaging Spectrometer – a sensor mounted on NASA’s TERRA and AQUA satellites that orbits the Earth collecting data in visible and infrared wavelengths. The data used in this project was the MOD43B4 Nadir BRDF (NBAR) product disseminated by NASA and post-processed by CSIRO.
aquifer original
dcterms created equal to or less than 2017-10-13T04:01:55Zequal to or more than 2017-10-13T04:01:55Z
definition An underground layer of saturated rock, sand or gravel that absorbs water and allows it to pass freely through pore spaces.
baseflow original
dcterms created equal to or less than 2017-10-13T04:01:55Zequal to or more than 2017-10-13T04:01:55Z
definition The component of streamflow supplied by groundwater discharge.
capillary zone original
dcterms created equal to or less than 2017-10-13T04:01:55Zequal to or more than 2017-10-13T04:01:55Z
definition The zone of soil moisture above the watertable where water is drawn upwards by capillary tension in which the water is at less than atmospheric pressure.
conceptual model original
dcterms created equal to or less than 2017-10-13T04:01:55Zequal to or more than 2017-10-13T04:01:55Z
definition Documentation of a conceptual understanding of the location of GDEs and interaction between ecosystems and groundwater.
confined aquifer original
dcterms created equal to or less than 2017-10-13T04:01:55Zequal to or more than 2017-10-13T04:01:55Z
definition An aquifer overlain by a confining bed. The confining bed has a significantly lower hydraulic conductivity than the aquifer. Typically, groundwater in a confined aquifer is under pressure significantly greater than atmospheric pressure.