Terrestrial LiDAR survey and morphological analysis to identify infiltration properties in the Tamala Limestone, Western Australia

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dc.contributor.authorMahmud, Ken_AU
dc.contributor.authorMariethoz, Gen_AU
dc.contributor.authorTreble, PCen_AU
dc.contributor.authorBaker, AAen_AU
dc.date.accessioned2016-02-01T22:54:23Zen_AU
dc.date.available2016-02-01T22:54:23Zen_AU
dc.date.issued2015-07-16en_AU
dc.date.statistics2016-02-02en_AU
dc.description.abstractCaves are an ideal observatory of infiltration water in karstified limestone, and the application of remote sensing techniques can bring new insights toward flow patterns and processes. We present an exhaustive characterization of Golgotha Cave in SW Western Australia, based on a light detection and ranging (LiDAR) measurement campaign. The cave is developed in Quaternary age aeolianite (dune limestone) and its infiltration waters form speleothems. We collect ground-based LiDAR scans of the cave ceiling at three sites within the cave system. The resulting point-clouds are analyzed using mathematical morphology to determine statistical information on stalactite widths, lengths, and spatial distributions. We establish a relationship between stalactite diameter and length that is in agreement with the platonic ideal of stalactite shape. We relate stalactite density variation with topography of the cave ceiling and variations in hydraulic gradient. From this analysis, it appears that longer stalactites tend to occur in comparatively lower ceiling elevation, which, we hypothesize, represents greater mass of water in the limestone above the roof of the cave. We also investigate the relationship between stalactite distribution and ceiling features such as fractures. We apply this to identify different types of possible flow patterns such as matrix flow and fracture flow. This analysis demonstrates a spatial variability, with one site having linear groups of stalactites and another site mostly dominated by stalactite clusters. © 2015, IEEE.en_AU
dc.identifier.citationMahmud, K., Mariethoz, G., Treble, P. C., & Baker, A. (2015). Terrestrial LiDAR survey and morphological analysis to identify infiltration properties in the Tamala Limestone, Western Australia. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 8(10), 4871-4881. doi:10.1109/JSTARS.2015.2451088en_AU
dc.identifier.govdoc6401en_AU
dc.identifier.issn1939-1404en_AU
dc.identifier.issue10en_AU
dc.identifier.journaltitleIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensingen_AU
dc.identifier.pagination4871-4881en_AU
dc.identifier.urihttp://dx.doi.org/10.1109/JSTARS.2015.2451088en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/6581en_AU
dc.identifier.volume8en_AU
dc.language.isoenen_AU
dc.publisherIEEEen_AU
dc.subjectCavesen_AU
dc.subjectOptical radaren_AU
dc.subjectMorphologyen_AU
dc.subjectLimestoneen_AU
dc.subjectTopographyen_AU
dc.subjectQuaternary perioden_AU
dc.titleTerrestrial LiDAR survey and morphological analysis to identify infiltration properties in the Tamala Limestone, Western Australiaen_AU
dc.typeJournal Articleen_AU
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