Výsledky vyhledávání - "Mehrdad Darijani"

A Random Forest approach to predict geology from geophysics in the Pontiac subprovince, Canada

Autor: Mehrdad Darijani, Colin G. Farquharson, Stéphane Perrouty

Publikováno v: Canadian Journal of Earth Sciences. 59:489-503

Current “visual” integration approaches to map geology from geophysics are challenging, biased toward user assumptions, and time consuming. Applying a supervised machine learning Random Forest method to airborne geophysical data sets is an altern

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a8d16757ded5de88d0277c43efe6a0af
https://doi.org/10.1139/cjes-2021-0089

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Forward modeling and 3D inversion of electromagnetic data collected over the McArthur River uranium deposit in the Athabasca Basin, Canada

Autor: Reza Mir, Peter Fullagar, Mehrdad Darijani, Richard Smith, Shawn Scott, Martin Ross, Pejman Shamsipour, Michel Chouteau, Kevin Ansdell, Mohamed Gouiza

Publikováno v: GEOPHYSICS. 87:B129-B143

Detection and assessment of the deeply buried high-grade uranium deposits in the Athabasca Basin rely on geophysical methods to map conductive rocks. Variable Quaternary surface cover can mask the anomalous signals from depth and affect the interpret

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9dc601062911716fba603922b5b099c6
https://doi.org/10.1190/geo2021-0199.1

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Inversion of magnetic and frequency-domain electromagnetic data for investigating lithologies associated with gold mineralization in the Canadian Malartic area, Québec, Canada

Autor: Colin G. Farquharson, Mehrdad Darijani

Publikováno v: Canadian Journal of Earth Sciences. 58:413-432

Canadian Malartic is an Archean low-grade bulk tonnage native gold deposit. The deposit is mostly located in altered clastic metasedimentary rocks, mafic–ultramafic dykes, and monzodioritic porphyry intrusions. Airborne magnetic and frequency-domai

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0e6e54f536e45cc27e7123ef0c10e399
https://doi.org/10.1139/cjes-2020-0092

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Joint and constrained inversion of magnetic and gravity data: A case history from the McArthur River area, Canada

Autor: Peter G. Lelièvre, Mehrdad Darijani, Colin G. Farquharson

Publikováno v: GEOPHYSICS. 86:B79-B95

Magnetic and gravity data are used in the early stages of exploration for uranium deposits in the Athabasca Basin of Canada, just as for many other mineral exploration scenarios. Uranium mineralization in the Athabasca Basin is located where faults i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::15f0f26e33c8ddd40053344a8f0f3a59
https://doi.org/10.1190/geo2019-0818.1

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Clustering and constrained inversion of seismic refraction and gravity data for overburden stripping: Application to uranium exploration in the Athabasca Basin, Canada

Autor: Mehrdad Darijani, Colin G. Farquharson, Peter G. Lelièvre

Publikováno v: GEOPHYSICS. 85:B133-B146

Gravity signatures from features associated with the footprints of uranium deposits within the sandstones and basement of the Athabasca Basin are masked in the measured gravity by the contribution from glacial sediments (overburden), in particular by

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::268301fb117bc4b4baf9b5064d10a78f
https://doi.org/10.1190/geo2019-0525.1

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Two-dimensional geomagnetic forward modeling using adaptive finite element method and investigation of the topographic effect

Autor: Mehrdad Darijani, Mehdi Shahmirzae Jeshvaghani

Publikováno v: Journal of Applied Geophysics. 105:169-179

Forward modeling approach is a major concept in geophysical exploration and also a key factor in the development of inversion algorithms. Finite element method for two-dimensional (2-D) geomagnetic forward modeling is based on numerical solution of t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d967a05d44167ec490bbe4ca330a522d
https://doi.org/10.1016/j.jappgeo.2014.03.016

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2D inversion of the magnetotelluric data from Mahallat geothermal field in Iran using finite element approach

Autor: Mehrdad Darijani, Behrooz Oskooi

Publikováno v: Arabian Journal of Geosciences. 7:2749-2759

The natural-field magnetotelluric (MT) method has proven very useful for mapping the geothermal fields as resistivity sections. The depth of investigation of the MT method is sufficiently large to penetrate deep into the upper crust. MT soundings alo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::32027be567ae12c669fffbd8b5571e16
https://doi.org/10.1007/s12517-013-0893-6

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Synthetic modeling and joint inversion of gravity and seismic refraction data for overburden stripping in the Athabasca Basin, Canada

Autor: Colin G. Farquharson, Mehrdad Darijani

Publikováno v: SEG Technical Program Expanded Abstracts 2016.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8d5c492644cf55d34419a1fc20f20616
https://doi.org/10.1190/segam2016-13947873.1

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