A5045133874- Geochemistry and Geologic Mapping
- Remote-Sensing Image Classification
- Hydrocarbon exploration and reservoir analysis
- Soil Geostatistics and Mapping
- Cryospheric studies and observations
- Geological Studies and Exploration
- Phosphorus and nutrient management
- Climate change and permafrost
- Landslides and related hazards
- Constructed Wetlands for Wastewater Treatment
- Land Use and Ecosystem Services
- Wastewater Treatment and Nitrogen Removal
- Recommender Systems and Techniques
- Archaeological Research and Protection
- Topic Modeling
- Geological Modeling and Analysis
- Atmospheric and Environmental Gas Dynamics
- Web Data Mining and Analysis
- 3D Surveying and Cultural Heritage
- Methane Hydrates and Related Phenomena
- VLSI and FPGA Design Techniques
- Information Retrieval and Search Behavior
- Ecosystem dynamics and resilience
- Zoonotic diseases and public health
- Manufacturing Process and Optimization
Geological Survey of Denmark and Greenland
2015-2022
CSIRO Land and Water
2018-2019
Curtin University
2018-2019
University of Copenhagen
2017-2018
University of South Australia
2015
K.N.Toosi University of Technology
2011-2014
University of Tehran
2014
Sharif University of Technology
2007
Recently, ground-based hyperspectral imaging has come to the fore, supporting arduous task of mapping near-vertical, difficult-to-access geological outcrops. The application outcrop sensing within a range one several hundred metres, including geometric corrections and integration with accurate terrestrial laser scanning models, is already developing rapidly. However, there are few studies dealing distant targets (i.e., in kilometres) such as mountain ridges, cliffs, pit walls. In particular,...
Abstract. The 17 June 2017 rock avalanche in the Karrat Fjord, West Greenland, caused a tsunami that flooded nearby village of Nuugaatsiaq and killed four people. disaster was entirely unexpected since no previous records large slope failures were known region, it highlighted need for better knowledge potentially hazardous slopes remote Arctic regions. aim paper is to explore our ability detect locate unstable regions with difficult access. We test this by examining case avalanche. workflow...
The widespread, severe negative impacts of human activities on Earth's ecosystems over the past few decades have highlighted importance continuous and up-to-date monitoring health. On other hand, it has been proven that use remote sensing technology in environmental studies can lead to accurate reliable results with spending less cost time. This research attempts indicators framework Vigour, Organization, Resilience, Services (VORS) assess ecosystem health by introducing Remotely Sensed...
The use of Unmanned Aerial Systems (UAS), also known as drones, is becoming increasingly important for geological applications. Thanks to lower operational costs and ease use, UAS offer an alternative approach aircraft-based ground-based geoscientific measurements (Colomina & Molina 2014). Magnetic hyperspectral surveys hold particular promise mineral exploration, several groups have recently published studies magnetic data collected by such applications (Malehmir et al. 2017; Cunningham...
Virtual representation and simulation of spatio-temporal phenomena is a promising goal for the production an advanced digital earth. Spread modeling, which one most helpful analyses in geographic information system (GIS), plays prominent role meeting this objective. This study proposes new model that considers both aspects static dynamic behaviors spreadable cellular automata (CA) modeling. Therefore, artificial intelligence tools such as adaptive neuro-fuzzy inference (ANFIS) genetic...
Remote and extreme regions such as in the Arctic remain a challenging ground for geological mapping mineral exploration. Coastal cliffs are often only major well-exposed outcrops, but mostly not observable by air/spaceborne nadir remote sensing sensors. Current outcrop efforts rely on interpretation of Terrestrial Laser Scanning oblique photogrammetry, which have inadequate spectral resolution to allow detection subtle lithological differences. This study aims integrate 3D-photogrammetry...
ABSTRACT This study investigates the usage of HyMAP airborne hyperspectral and Sentinel-2, ASTER Landsat-8 OLI spaceborne multispectral data for detailed mapping mineral resources in Arctic. The EnMAP Geological Mapper (EnGeoMAP) Iterative Spectral Mixture Analysis (ISMA) approaches are tested mafic-ultramafic rocks areas covered by abundant lichen. Using Structural Similarity Index Measure (SSIM), output classification results from quantitatively compared to available geological map...
Personalization promises to improve the accuracy of Web search and has been drawing much research attention recently. Some evidence indicates that for educational purposes, disadvantages personalized are not justified by its benefits. The potential issues with personalization, especially in an context, include loss serendipity capability, commercialization education "Filter Bubble" effect where users denied information if engine algorithms decide it is irrelevant them. majority students...
Spaceborne remote sensing is a suitable tool for early mineral exploration and surveying large areas of high Arctic environment in fast cost-effective manner. While spaceborne data have been used widely to map geology arid areas, similar approaches remotely-sensed geological mapping environments yet be developed. Freely available optical provides detailed information high-quality that could potentially reduce resource risk regions. To this end, study compares the use two different...
The integration of imaging spectroscopy and aeromagnetics provides a cost-effective promising way to extend the initial analysis mineral deposit. While retrieves surface spectral information, magnetic responses are used determine magnetization at both shallower greater depths using 2D 3D modeling. Integration magnetics improves upon knowledge concerning lithology with properties, enhances understanding geological origin anomalies, is approach for analyzing prospective area minerals having...
The landslide of 17 June 2017 at Karrat Fjord, central West Greenland, triggered a tsunami that caused four fatalities. catastrophe highlighted the need for better understanding landslides in Greenland and initiated recent nation-wide screening project led by Geological Survey Denmark (GEUS; see also Svennevig (2019) this volume).
 This paper describes an approach compiling freely available data to improve GEUS’ capability monitor active remote areas Arctic near real time. Data include...
Change detection represents an important remote sensing tool in environmental monitoring and disaster management. In this respect, multichannel synthetic aperture radar (SAR) data offer great potential because of their insensitivity to atmospheric sun-illumination conditions (over optical multispectral data) the improved discrimination capability they may provide compared single-channel SAR. The problem detecting changes caused by flooding is addressed a contextual unsupervised technique...
This paper presents a hybrid method based on Discrete Particle Swarm Optimization (DPSO) and Branch-and-Bound (B&B) algorithms to solve Hardware/Software partitioning problems. In this approach, some pre-defined relations are used present formal solution for the problem. Then, DPSO is increase speed of B&B. Results experiments show that in case problem has any optimal solution, proposed approach can find it better time, addition more manner.
Abstract. Lichens are the dominant autotrophs of polar and subpolar ecosystems commonly encrust rock outcrops. Spectral mixing lichens bare can shift diagnostic spectral features materials interest thus leading to misinterpretation false positives if mapping is done based on perfect matching methodologies. Therefore, ability distinguish lichen coverage from decomposing a mixed pixel into collection pure reflectance spectra, improve applicability hyperspectral methods for mineral exploration....
In this paper, we aim to investigate the use of semantic-based websites improve recommendation quality by testing a knowledge based system whose results completely depends on product descriptions, two different databases. one our relational MySQL databases, descriptions are stored in form RDF files and other data is human language. We show that, RS more accurate intelligent when it working with semantic database that stores information graphs. Since, well-defined can help analyze an extract...
Basement highs are large structural features, commonly buried in sedimentary basins (Busby & Azor 2012). They of interest for natural resources exploration and research because their ability to influence migration entrapment petroleum (Trice 2014) water, the deposition metals (Hitzman 2005; Borg et al. Three-dimensional (3D) reservoir models (e.g. Shepherd 2009) built evaluate model fluid-filled basement reservoirs (Ringrose Bentley 2015). However, subsurface data expensive, difficult...
While multispectral images have been in regular use since the 1970s, widespread of hyperspectral is a relatively recent trend. This technology comprises remote measurement specific chemical and physical properties surface materials through imaging spectroscopy. Regional geological mapping mineral exploration are among main applications that may benefit from technology. Minerals rocks exhibit diagnostic spectral features throughout electromagnetic spectrum allow their composition relative...
Lithological mapping using remote sensing depends, in part, on the identification of rock types by their spectral characteristics. Chemical and physical properties minerals rocks determine diagnostic features throughout electromagnetic spectrum. Shifts position changes shape depth these can be explained variations chemical composition minerals. Detection such is vital for discriminating with similar composition. Compared multispectral image data, airborne or spaceborne hyperspectral imagery...