ORCID Profile
0000-0002-3604-4625
Current Organisation
University of South Australia
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Publisher: American Geophysical Union (AGU)
Date: 12-2021
DOI: 10.1029/2021GC010154
Abstract: We present PetroChron Antarctica, a new relational database including petrological, geochemical and geochronological data sets along with computed rock properties from geological s les across Antarctica. The database contains whole‐rock geochemistry with major/trace element and isotope analyses, geochronology from multiple isotopic systems and minerals for given s les, as well as an internally consistent rock classification based on chemical analysis and derived rock properties (i.e., chemical indices, density, p ‐velocity, and heat production). A broad range of meta‐information such as geographic location, petrology, mineralogy, age statistics and significance are also included and can be used to filter and assess the quality of the data. Currently, the database contains 11,559 entries representing 10,056 unique s les with varying amounts of geochemical and geochronological data. The distribution of rock types is dominated by mafic (36%) and felsic (33%) compositions, followed by intermediate (22%) and ultramafic (9%) compositions. Maps of age distribution and isotopic composition highlight major episodes of tectonic and thermal activity that define well known crustal heterogeneities across the continent, with the oldest rocks preserved in East Antarctica and more juvenile lithosphere characterizing West Antarctica. PetroChron Antarctica allows spatial and temporal variations in geology to be explored at the continental scale and integrated with other Earth‐cryosphere‐biosphere‐ocean data sets. As such, it provides a powerful resource ready for erse applications including plate tectonic reconstructions, geological/geophysical maps, geothermal heat flow models, lithospheric and glacial isostasy, geomorphology, ice sheet reconstructions, bio ersity evolution, and oceanography.
Publisher: Copernicus GmbH
Date: 19-10-2015
DOI: 10.5194/ISPRSANNALS-II-2-W2-63-2015
Abstract: Abstract. Web services utilizations in Spatial Data Infrastructure (SDI) have been well established and standardized by Open Geospatial Consortium (OGC). Similar web services for 3D SDI are also being established in recent years, with extended capabilities to handle 3D spatial data. The increasing popularity of using City Geographic Markup Language (CityGML) for 3D city modelling applications leads to the needs for large spatial data handling for data delivery. This paper revisits the available web services in OGC Web Services (OWS), and propose the background concepts and requirements for encoding spatial data via Web Encoding Service (WES). Furthermore, the paper discusses the data flow of the encoder within web service, e.g. possible integration with Web Processing Service (WPS) or Web 3D Services (W3DS). The integration with available web service could be extended to other available web services for efficient handling of spatial data, especially 3D spatial data.
Publisher: Elsevier BV
Date: 2011
Publisher: MDPI AG
Date: 12-07-2023
DOI: 10.3390/LAND12071396
Abstract: Soil erosion and sediment transport have significant consequences, including decreased agricultural production, water quality degradation, and modification to stream channels. Understanding these processes and their interactions with contributing factors is crucial for assessing the environmental impacts of erosion. The primary objective of this review is to identify a suitable soil erosion and sediment transport model for catchment-scale application. The study considers various model selection processes, including model capability and the spatial and temporal domains for assessing spatiotemporal distributions. The review acknowledges the limitations, uncertainties, and unrealistic assumptions associated with soil erosion and sediment transport models. Models are usually developed with a particular objective, which demands an assessment of capabilities, spatial, and temporal applicability, and catchment-scale applicability. Distributed models are often preferred for catchment-scale applications, as they can adequately account for spatial variations in erosion potential and sediment yield, aiding in the evaluation of erosion-contributing elements and planning erosion control measures. Based on the findings of this study, the authors encourage utilizing models (such as Soil and Water Assessment Tool (SWAT) or Automated Geospatial Watershed Assessment Tool (AGWA)) that can forecast net erosion as a function of sediment output for catchment erosion and sediment yield modeling. This review helps researchers and practitioners involved in erosion and sediment modeling by guiding the selection of an appropriate model type based on specific modeling purposes and basin scale. By choosing appropriate models, the accuracy and effectiveness of sediment yield estimation and erosion control measures can be improved.
Publisher: Informa UK Limited
Date: 26-11-2019
Publisher: MDPI AG
Date: 20-09-2023
DOI: 10.3390/RS15184624
Publisher: Springer Science and Business Media LLC
Date: 28-02-2020
Publisher: Springer International Publishing
Date: 18-10-2017
Publisher: Schweizerbart
Date: 11-2009
Publisher: MDPI AG
Date: 26-08-2013
DOI: 10.3390/IJGI2030817
Publisher: Elsevier BV
Date: 06-2023
Publisher: Informa UK Limited
Date: 02-10-2021
Publisher: Informa UK Limited
Date: 08-02-2021
Publisher: Copernicus GmbH
Date: 19-10-2015
DOI: 10.5194/ISPRSARCHIVES-XL-2-W4-67-2015
Abstract: Abstract. Studying at Universiti Teknologi Malaysia (UTM) will ensure academic and technological excellence. The Faculty of Geoinformation and Real Estate (FGHT), established in 1972, focus on education and research for undergraduate as well as postgraduate programs in the related disciplines such as geomatic engineering, geoinformatics, remote sensing, property management and land administration & development. FGHT strives to be a leading academic center in geoinformation and real estate in Southeast Asia. Graduates and alumni form major strong professional societies and work force in the related industries. Many of our graduates end up with good jobs not just in Malaysia but also in other countries (Asian, Middle East, Africa and Europe). The strong team and knowledgeable academic members in this faculty provide excellent ingredients for the success of the programs (i.e. with the relevant and up-to-date curriculum and syllabus). FGHT is continuously working to provide and offer first-class geoinformation and real estate education and research in the country and be at a par with other leading institutions in other parts of the globe. The Department of Geoinformation at FGHT runs a Bachelor of Engineering in Geomatic and a Bachelor of Science in Geoinformatics. At the postgraduate levels, namely M.Sc. and PhD programs, the offered disciplines are Geomatic Engineering, Geoinformatics and Remote Sensing. In the following, the state of the art of FGHT’s postgraduate education in Geoinformation is presented, including a comparison with other universities in Malaysia, program content and curriculum information, alumni statistics as well as future strategies.
Publisher: Informa UK Limited
Date: 09-2011
Publisher: University of Toronto Press Inc. (UTPress)
Date: 09-2016
Abstract: In the recent years, virtual 3D reconstructions of archaeological sites have gained large attention from various fields of science. Procedural modelling approaches have emerged as appropriate to model and visualize reconstructed ancient structures. The process of reconstructing historical building structures involves ambiguities and uncertainties. On an archaeological site, excavated and surveyed findings such as ruins, located in their original positions, provide reliable foundations for a 3D reconstruction. On the contrary, findings, such as debris of walls, roofs, columns, etc. are not less important, but implicate different levels of certainties for a 3D model, depending on the archaeological knowledge and interpretation. On one hand, this work provides a virtual 3D reconstructing of an ancient Roman temple named “Sanctuary of Diana” located in Nemi, Italy, in different levels of detail using a procedural modelling approach. On the other hand, we present a fuzzy logic approach to quantify and visualize the uncertainty of the temple reconstruction.
Publisher: Copernicus GmbH
Date: 04-06-2019
DOI: 10.5194/ISPRS-ARCHIVES-XLII-2-W13-277-2019
Abstract: Abstract. A miniaturised, high resolution visible and long wave infrared (LWIR) sensor was carried onboard an unmanned aerial vehicle to observe sections of radiata pine forests. The raw irradiance measurements were temporally pre-processed using a biologically-inspired vision (BIV) model to allow information within and across the images to be normalised. This permitted a larger, denser, and more tailored set of key points within the 2D image stacks to be corresponded, thereby improving 3D reconstructions of in idual trees derived using structure from motion (SfM). The BIV model comprises multiple layers of processing derived from measured or assumed responses of the photoreceptor cells in the hoverfly. Its pre-processing expands the range of input signal obtained from the LWIR sensor and enhances foreground-background contrast. Morphological image processing techniques were also applied to enhance key image features before structure from motion is applied. The result allows structural properties of in idual trees to be characterised in terms of their potential volume and quality and contrasted with the point clouds obtained from the visible imagery that only depicts the tree canopies.
Publisher: Informa UK Limited
Date: 04-04-2021
Publisher: Informa UK Limited
Date: 02-01-2018
Publisher: Springer Berlin Heidelberg
Date: 11-11-2012
Publisher: Informa UK Limited
Date: 16-01-2013
Publisher: Wiley
Date: 18-09-2021
Publisher: Informa UK Limited
Date: 11-11-2020
Publisher: Springer Berlin Heidelberg
Date: 11-11-2013
No related grants have been discovered for Stefan Peters.