Aerogravity and remote sensing observations of an iron deposit in Gara Djebilet, southwestern Algeria

Bersi, Mohand; Saibi, Hakim; Chabou, Moulley Charaf

doi:10.1016/j.jafrearsci.2016.01.004

Cited by 42 publications

(16 citation statements)

References 40 publications

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“…For 2D and 3D modeling and inversion techniques using gravity data, there are many available computer codes and also computer software developed by commercial companies. For more details about these inversion methods and computer codes, you can check these publications [23][24][25][26].…”

Section: Interpretation Techniquesmentioning

confidence: 99%

Microgravity and Its Applications in Geosciences

Saibi¹

2018

Gravity - Geoscience Applications, Industrial Technology and Quantum Aspect

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Gravity is the most important force which determines the structure and evolution of stars like the Sun as well as the structure and evolution of galaxies. The law of universal gravitation is generally sufficient to describe the gravity of the Earth, the Moon, or the planets orbiting the Sun. With the recent development of sensitive gravimeters, the gravity survey has become one of the most used geophysical tools in applied geosciences for tasks including: exploring for oil and gas fields by studying geological structures and salt dome intrusion, monitoring groundwater and geothermal reservoirs by determining recharge and discharge masses, monitoring volcanic activity and hydrothermal activity beneath volcanoes, monitoring CO 2 movement during and after sequestration, locating active faults responsible for big earthquakes, and also exploring mines and detecting local cavities. In this chapter, we present a brief introduction to gravity and Bouguer gravity, the different corrections applied to measured gravity and follow with cases of applied microgravity measurements in different fields of geosciences.

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Section: Interpretation Techniquesmentioning

confidence: 99%

Microgravity and Its Applications in Geosciences

Saibi¹

2018

Gravity - Geoscience Applications, Industrial Technology and Quantum Aspect

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“…This case study shows an example of the application of remote sensing to geological and mineralogical mapping of the Central Atlantic Magmatic Province (CAMP) formations in southern Algeria. Remote-sensing techniques such as principal component analysis (PCA), band ratios, band math, and target detection wizard can detect different mineral resources and interesting geological structures [40]. In this section, we present applications of different remote-sensing methods to map the mineral resources of the CAMP formations in southern Algeria using Landsat 8 OLI multispectral images.…”

Section: Application Of Remote Sensing In Mining and Geological Invesmentioning

confidence: 99%

“…The Operational Land Imager (OLI) multispectral images were used to enhance and highlight the geological and structural features in the study area. The image processing techniques such as band ratios, principal components analysis (PCA), target detection wizard, and band math have proved to be a strong tools for mapping geological features for mineral exploration purposes [40,44].…”

Section: Remote-sensing Analysismentioning

confidence: 99%

Applications of Remote Sensing in Geoscience

Saibi¹,

Bersi²,

Mia³

et al. 2018

Recent Advances and Applications in Remote Sensing

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Remote sensing is becoming an important and useful tool in mapping large, remote areas and has many applications in geosciences such as geologic and geo-structural mapping, mineral and water exploration, hydrocarbon exploration, natural hazards analysis, and geomorphology. The recent advances in remote-sensing imaging acquisition and availability of images can help geoscientists to explore and prepare maps quickly and evaluate the geo-potential of any specific area on the globe. Advances in remote-sensing data analysis techniques have improved the capacity to map the geological structures and regional characteristics and can serve in mineral exploration in complex and poorly understood regions. In this chapter, geophysical remotely sensed data (airborne geophysics) are integrated with other sources of remotely sensed data to analyze three separate areas, one each for geological structure, lineament presence and orientation, and geothermal potential. Three case studies are discussed in this chapter from three countries-Afghanistan, United Arab Emirates, and Algeria-to show the effectiveness of remote sensing in mapping and detecting geo-structural, geomorphological, and geothermal characteristics of ground surfaces.

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“…The remote sensing data has many advantages and applications in order to study volcanic hazards due to repeated image coverage and multispectral characteristics of the data. Remote sensing data analysis has found an ever-increasing use in geosciences for more than three decades, such as: in mineral hyperspectral imaging (Azizi et al 2015), geological mapping of rocks and structures (Saadi et al 2008a,b;Saibi et al 2015;Bersi et al 2016), and also to study volcanic activity and map volcanic terrains (Francis and Baker 1978;Fedotov et al 1989;Khrenov et al 2000;Ramsey and Dean 2004;Ramsey and Flynn 2004). The ultraviolet (UV) remote sensing are used to study the SO2 flux from fumaroles of volcanoes (Tamburello et al 2011a,b,c) and also the CO2 emissions (Aiuppa et al 2011a,b) as precursors of volcanic eruptions.…”

Section: Introductionmentioning

confidence: 99%

Analyze the spatial distribution of lava flows in Al-Ays Volcanic Area, Saudi Arabia, using remote sensing

et al. 2017

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The Al-Ays Volcanic Area (AAVA) experienced a massive earthquake swarm in 2009 under the Harrat Lunayyir (HL). To examine the space distribution of basaltic lava flows in AAVA we present here an analysis of satellite images. This has helped to identify three generation of lava flows within AAVA for the first time; their spatial extent and relationship to geological features. Various remote sensing treatments were applied to the Landsat 8 image: (a) color composites, (b) band rationing, (c) principal component analysis and (d) a mathematical index. Spectral analysis of the maps assists with charting the spatial configuration of the lava flows. Total area occupied by basalts is ~ 677 km 2 , of which, the oldest lava flows occupy almost 52% (354 km 2), the lavas of intermediate age share 43% (295 km 2) while the recent lava flows merely share 5% (28 km 2), including 6.8 km 2 referring to the volcanic cones. It should be noted that the generation of lava flows outlines a rather small area, of ≤ 20 km 2 radius, circumventing the swarm epicenter zone. These maps may prove useful in volcanic hazard mapping for the rugged terrain.

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Aerogravity and remote sensing observations of an iron deposit in Gara Djebilet, southwestern Algeria

Cited by 42 publications

References 40 publications

Microgravity and Its Applications in Geosciences

Microgravity and Its Applications in Geosciences

Applications of Remote Sensing in Geoscience

Analyze the spatial distribution of lava flows in Al-Ays Volcanic Area, Saudi Arabia, using remote sensing

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