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Showing results for: [ Geomorphology and Regolith and Landscape Evolution ]
The digital 3-dimenional (3D) mineral mapping suite of Queensland comprises ~20 “standardized” products at the spectral resolution of the ASTER (Advanced Space-borne Thermal Emission and Reflection Ra... morediometer) sensor and generated from publicly-available satellite, airborne, field and drill core spectral data spanning the visible near infrared (VNIR; 0.4 to 1.0 µm), shortwave infrared (SWIR; 1.0 to 2.5 µm) and thermal infrared (TIR; 7.5 to 12.0 µm) wavelength regions, including:
1. Satellite ASTER maps at both 30 m and 90 m pixel resolution with complete coverage of the state of Queensland, i.e. 1.853 million km²;
2. Airborne HyMap maps at ~5 m pixel resolution with a coverage of ~25,000 km2 from areas across north Queensland;
3. Field point samples (~300) from the National Geochemical Survey of Australia (NGSA) collected from a depth of 0-10 cm of flood overbank sediments;
4. Drill-core profiles (~20) of the National Virtual Core Library (NVCL) selected from the area around the Georgetown seismic line (07GA-IG2).
Key to the processing of the remote sensing data-sets (ASTER and HyMap) was the implementation of unmixing methods to remove the effects dry and green vegetation. This unmixing was not applied to the Australian ASTER geoscience maps released in 2012 (called here Version 1 or V1) resulting in extensive areas with little/no mineral information because of the need to apply masks. The vegetation unmixing methods used in the Version 2 (V2) processing of the ASTER and HyMap imagery has resulted in very few areas without coherent mineral information.
The resultant V2 “mineral group” products were designed to measure mineral information potentially useful for mapping: (i) primary rock composition; (ii) superimposed alteration effects; and (iii) regolith cover. These V2 products may assist in mapping soil properties and groundwater conditions. However their relatively low spectral resolution (based on ASTER’s 14 VNIR-SWIR-TIR bands) means that they do not provide the high level of mineralogical detail available from hyperspectral systems (>100 spectral bands), like HyMap and the HyLogger. Nevertheless, the relatively low spectral resolution of ASTER means that all other sensor data can be spectrally resampled to that resolution. Furthermore, the ASTER global data archive, which now spans entire Earth’s land surface <80degrees latitude, means that it can be used as global base-map for integrating all other spectral data.
3D Mineral Map of Queensland - Stage 1 - mineral mapping - Published 06 May 2017
Geochemical dispersion of the DeGrussa deposit within its associated palaeodrainage system
RIB Sandfire - palaeochannel footprint d - Mineral Exploration - Published 27 Jan 2016
3D laser scan data of Jenolan Caves, NSW, Australia. Data were acquired using three 3D mobile mapping systems developed at CSIRO. The vast majority of the data was collected using the Zebedee 3D Mappi... moreng System, a handheld lidar system that generates maps from measurement collected as an operator holding the device traverses through the site. Other data were acquired from the bentwing 3D Aerial Mapping System, which has similar sensors to Zebedee mounted on a quadrotor MAV platform.
The primary representations provided are detailed 3D point cloud maps of the caves and the surface above them (approximately 2.3 billion points), as well as the trajectory estimate of the laser scanner as it was carried through the environment (approximately 28.4km over 22 hours of data collection).less
NewSLAM - Zebedee Cave Survey - Published 29 Jun 2015
3D laser scan data of Cliefden Caves, NSW, Australia. Data were acquired using the Zebedee 3D Mapping System, a handheld lidar system that generates maps from measurement collected as an operator hold... moreing the device traverses through the site. The primary representations provided are detailed 3D point cloud maps of the caves and the surface above them (approximately 532 million points), as well as the trajectory estimate of the laser scanner as it was carried through the environment.less
NewSLAM - Zebedee Cave Survey - Published 08 May 2015
3D laser scan data of Wellington Caves, NSW, Australia. Data were acquired using the Zebedee 3D Mapping System, a handheld lidar system that generates maps from measurement collected as an operator ho... morelding the device traverses through the site. The primary representations provided are detailed 3D point cloud maps of the caves and the surface above them (nearly 500 million points), as well as the trajectory estimate of the laser scanner as it was carried through the environment.less
NewSLAM - Wellington Caves Zebedee Survey - Published 28 Apr 2015
This data was collected as part of two research projects commissioned by Melbourne Water that investigated components of sediment dynamics in Western Port and its contributing rivers in Victoria, incl... moreuding:
- River TSS, TN, TP loads in Cardinia Ck, Bunyip R, Lang Lang R, Bass R (2015 back to beginning of records), and TSS delivery through rivers to Western Port.
- Coastal bank erosion rates at Lang Lang (monitored from Nov 2012-June 2016 plus historical air photos back to 1947 for 8.6 km of coastline)
- Weather and coastal photographs, tide and groundwater heights at Lang Lang (Nov 2012-June 2016)
- Bay turbidity and extent of seagrass or macroalgae (1986-2015)
- Conceptual modelling of seagrass extent
Further information on the data is provided in the supporting attachment (Information.pdf) and in the project reports (Tomkins et al., 2013; Wilkinson et al., 2016)less
Western Port Bay Melb Water - Coastal bank erosion and river loads - Published 30 Jun 2016