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Acta Geologica Sinica(English Edition) 2021年第S01期95卷 73-75页

作者： Matthew J.COMEAU Michael BECKEN alexey V.kuvshinov Sodnomsambuu DEMBEREL Erdenechimeg BATMAGNAI Shoovdor TSERENDUG Institut für Geophysik Universitat MünsterGermany Institute of Geophysics ETHZürichSwitzerland Institute of Astronomy and Geophysics Mongolian Academy of SciencesUlaanbaatarMongolia

Whole-lithosphere structure has direct implications for both the genesis of minerals and the locations of mineral emplacement;thus knowledge of the deep structural framework of the lithosphere can advance understandin... 详细信息

关键词： magnetotellurics electrical resistivity lithosphere structure mineral exploration metal belt oreforming fluids mineral emplacement fluid transport

Improved Responses with Multitaper Spectral Analysis for Magnetotelluric Time Series Data Processing:Examples from Field Data

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Acta Geologica Sinica(English Edition) 2024年第S01期98卷 14-17页

作者： Matthew J.COMEAU Rafael RIGAUD Johanna PLETT Michael BECKEN alexey kuvshinov Department of Geoscience&Engineering Delft University of Technology The Netherlands Institute of Geophysics ETHZürichSwitzerland Institut für Geophysik Universität MünsterGermany

In order to attain good quality transfer function estimates from magnetotelluric field data(i.e.,smooth behavior and small uncertainties across all frequencies),we compare time series data processing with and without a multitaper approach for spectral *** are several common ways to increase the reliability of the Fourier spectral estimation from experimental(noisy)data;for example to subdivide the experimental time series into segments,taper these segments(using single taper),perform the Fourier transform of the individual segments,and average the resulting spectra.

关键词： magnetotellurics electrical resistivity time series processing Fourier analysis multitaper

An Asthenospheric Upwelling Beneath Central Mongolia——Implications for Intraplate Surface Uplift and Volcanism

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Acta Geologica Sinica(English Edition) 2021年第S01期95卷 70-72页

作者： Matthew J.COMEAU Michael BECKEN alexey V.kuvshinov Alexander GRAYVER Johannes KAUFL Erdenechimeg BATMAGNAI Shoovdor TSERENDUG Sodnomsambuu DEMBEREL Institut für Geophysik Universitat MünsterGermany Institute of Geophysics ETHZürichSwitzerland Institute of Astronomy and Geophysics Mongolian Academy of SciencesUlaanbaatarMongolia

Intraplate processes,such as continental surface uplift and intraplate volcanism,are enigmatic and the underlying mechanisms responsible are not fully *** Mongolia is an ideal natural laboratory for studying such proc... 详细信息

关键词： magnetotellurics electrical resistivity lithosphere structure intraplate volcanism surface uplift mantle upwelling lithosphere removal thermo-mechanical modeling

Imaging the Architecture of Mineral Systems and the Pathways of Ore-forming Fluids across Mongolia with Magnetotellurics

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Acta Geologica Sinica(English Edition) 2024年第S01期98卷 11-13页

作者： Matthew J.COMEAU Rafael RIGAUD Erdenechimeg BATMAGNAI Shoovdor TSERENDUG Sodnomsambuu DEMBEREL Michael BECKEN alexey kuvshinov Department of Geoscience&Engineering Delft University of Technology The Netherlands Institute of Geophysics ETHZürichSwitzerland Institute of Astronomy and Geophysics Mongolian Academy of SciencesUlaanbaatarMongolia Institut für Geophysik Universität MünsterGermany

In the framework of a mineral system approach,a combination of components is required to develop a mineral *** includes the whole-lithosphere architecture,which controls the transport of ore-forming fluids,and favorable tectonic and geodynamic processes,occurring at various spatial and temporal scales,that influence the genesis and evolution of ore-forming fluids(Huston et al.,2016;Groves et al.,2018;Davies et al.,2020).Knowledge of the deep structural framework can advance the understanding of the development of a mineral system and the emplacement of mineral *** geophysical exploration carried out with this aim is increasingly important for targeting new ore deposits in unexplored and underexplored regions(Dentith et al.,2018;Dentith,2019).

关键词： magnetotellurics electrical resistivity mineral exploration mineral emplacement ore fluids fluid transport

CATALYTIC PROPERTIES OF NANOFIBROUS CARBON IN SELECTIVE OXIDATION OF HYDROGEN SULPHIDE

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China Particuology 2006年第2期4卷 70-72页

作者： Gennady G. kuvshinov Vasiliy V. Shinkarev alexey M. Glushenkov Maxim N. Boyko Dmitriy G. kuvshinov Department of Chemical Engineering Novosibirsk State Technical University Pr.Karla Marksa 20 Novosibirsk Russia Group of catalytic technologies of carbon materials synthesis Boreskov Institute of Catalysis Pr.Akademika Lavrentieva 5 Novosibirsk Russia

Nanofibrous carbonaceous materials （NFC） as a new class of materials having many applications, can catalyze the selective oxidation of H2S to sulfur. The correlation between NFC structure and its activity and selectivity in H2S oxidation was determined. It is demonstrated that selectivity can be improved if NFC with more ordered structure be synthesized and the portion of the original catalyst in carbon be reduced by increasing the carbon accumulated in the catalyst.

关键词： nanostructure carbon nanofiber carbon nanotubes carbon yield selective oxidation of the hydrogen sulfide oxygen excess