Integrating potential fields with remote sensing data for geological investigations in the Eljufra area of Libya

Saadi, Nureddin M.; Watanabe, Kenji; Imai, Atsushi; Saibi, Hakim

doi:10.1186/bf03353116

Cited by 13 publications

(4 citation statements)

References 17 publications

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“…The second area, representing a mountainous environment, lies on a plateau within the southernmost region of the city of Tarhunah in the northwestern part of Libya, it is bounded by longitudes 13°04′ E to 14°00′ E and latitudes 31°45′ N to 32°23′ N (Saadi et al 2008b). This region covers a surface area of approximately 6,200 km 2 , the elevation ranges between approximately 300 and 900 m.…”

Section: Study Areas and Geological-environmental Settingsmentioning

confidence: 99%

Evaluation of image processing methods for geological interpretation in the different environments in Libya

2010

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This study evaluates the use of image processing techniques and methodologies of digital integration of multi-disciplinary geoscientific data to reduce the ambiguity in geological interpretations in different geological environments in Libya. To realize this objective, three areas were selected for this study; Eljufra, an arid environment; the mountainous environment Tarhunah; and the Jifara Plain, a coastal plain environment. Two types of remote sensing data were used in this study: Landsat Enhanced Thematic Mapper Plus (ETM+) and European Remote Sensing Satellite. The digital elevation model extracted from Shuttle Radar Topography Mission and digital topographic maps scale 1:50,000 were used for remote sensing interpretation. GIS and remote sensingbased methods were used to process and integrate all raster and vector layers data. This study offered dramatic benefits for geological interpretations and provided new insights into the efficiency of image processing methods in different geological environments.

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Section: Study Areas and Geological-environmental Settingsmentioning

confidence: 99%

Evaluation of image processing methods for geological interpretation in the different environments in Libya

2010

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“…Remote sensing as a tool for geological survey also has some limitations because remote sensing images mainly reflect surface information or shallow information, while most geological bodies, geological structures, and geological phenomena reflect three-dimensional information. The integration of geological, remote sensing and geophysical data limits the quantitative details of unknown regions, which can reduce the ambiguity of geological interpretation and improve the accuracy [86,87,88,89,90,91,92,93,94]. In addition, monitoring and understanding of geological processes also requires multidisciplinary analysis and integration of remote sensing data with field observations and underground geophysical data [30].…”

Section: Multidisciplinary Approachesmentioning

confidence: 99%

A Review of Geological Applications of High-Spatial-Resolution Remote Sensing Data

Xiao

Chen

et al. 2018

Preprint

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Geologists employ high-spatial-resolution (HR) remote sensing (RS) data for many diverse applications as they effectively reflect detailed geological information, enabling high-quality and efficient geological surveys. Applications of HR RS data to geological and related fields have grown recently. By analyzing these applications, we can better understand the results of previous studies and more effectively use the latest data and methods to efficiently extract key geological information. HR optical remote sensing data are widely used in geological hazard assessment, seismic monitoring, mineral exploitation, glacier monitoring, and mineral information extraction due to high accuracy and clear object features. Compared with optical satellite images, synthetic-aperture radar (SAR) images are stereoscopic and exhibit clear relief, strong performance, and good detection of terrain, landforms, and other information. SAR images have been applied to seismic mechanism research, volcanic monitoring, topographic deformation, and fault analysis. Furthermore, a multi-standard maturity analysis of the geological applications of HR images using literature from the Science Citation Index reveals that optical remote sensing data are superior to radar data for mining, geological disaster, lithologic, and volcanic applications, but inferior for earthquake, glacial, and fault applications. Therefore, geological remote sensing research needs to be truly multidisciplinary or interdisciplinary, ensuring more detailed and efficient surveys through cross-linking with other disciplines. Moreover, the recent application of deep learning technology to remote sensing data extraction has improved automatic processing and data analysis capabilities.

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“…Aeromagnetic, gravity, geologic, and remote sensing data were combined in the Eljufra region of Libya by Saadi et al (2008) to define geologic structures and outline hydrothermally altered basalt. Analytic signal determinations of the magnetic field were used to estimate the location and depths of magnetic contacts.…”

Section: Tectonicsmentioning

confidence: 99%

Mapping and Interpretation of the Lithospheric Magnetic Field

Purucker

Clark

2010

Geomagnetic Observations and Models

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We review some of the controversial and exciting interpretations of the magnetic field of the earth's lithosphere occurring in the four year period ending with the IAGA meeting in Sopron in 2009. This period corresponds to the end of the Decade of Geopotential Research, an international effort to promote and coordinate a continuous monitoring of geopotential field variability in the near-Earth environment. One of the products of this effort has been the World Digital Magnetic Anomaly Map, the first edition of which was released in 2007. A second, improved, edition is planned for 2011. Interpretations of the lithospheric magnetic field that bear on impacts, tectonics, resource exploration, and lower crustal processes are reviewed. Future interpretations of the lithospheric field will be enhanced through a better understanding of the processes that create, destroy, and alter magnetic minerals, and via routine measurements of the magnetic field gradient. IntroductionThe magnetic field originating in the earth's lithosphere is part of the earth's magnetic field complex, a dynamic system (Friis-Christensen et al. 2009) dominated by the interaction of the earth's magnetic field dynamo with that of the sun's. The lithospheric field M.E. Purucker ( ) Raytheon at Planetary Geodynamics Lab, Goddard Space Flight Center, Code 698, Greenbelt, MD 20771, USA e-mail: michael.e.purucker@nasa.gov is dominated by static (on a human time scale) contributions that typically represents less than 1% of the overall magnitude of the magnetic field complex, and originate from rocks in the crust and locally, the uppermost mantle. Interpretation of the lithospheric magnetic field is used in (1) structural geology and geologic mapping, and extrapolation of surface observations of composition and structure, (2) resource exploration and 3) plate tectonic reconstructions and geodynamics.This article is designed as a review describing recent progress in mapping and interpreting the lithospheric magnetic field, and also includes some highlights from the 2009 IAGA meeting in Sopron, Hungary. Since IAGA meets every four years, we have designed this review to highlight progress in the four year period from 2005 through 2009, although references to earlier important works are not neglected, especially in the area of resource exploration. Several reviews bearing on the mapping and interpretation of the lithospheric magnetic field have appeared between 2005 and 2009. Review articles within books and encyclopedias have included those within the Encyclopedia of Geomagnetism and Paleomagnetism (Gubbins and

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Integrating potential fields with remote sensing data for geological investigations in the Eljufra area of Libya

Cited by 13 publications

References 17 publications

Evaluation of image processing methods for geological interpretation in the different environments in Libya

Evaluation of image processing methods for geological interpretation in the different environments in Libya

A Review of Geological Applications of High-Spatial-Resolution Remote Sensing Data

Mapping and Interpretation of the Lithospheric Magnetic Field

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