检索结果-南通市图书馆

Acta Geologica Sinica(English Edition) 2024年第S1期 14-17页

作者： matthew j.comeau Rafael RIGAUD johanna PLETT Michael BECKEN Alexey KUVSHINOV Department of Geoscience & Engineering Delft University of Technology Institute of Geophysics ETH Institut für Geophysik Universit?t Münster

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 estimation. There 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：

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

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2024年第S1期 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 Institute of Geophysics ETH Institute of Astronomy and Geophysics Mongolian Academy of Sciences Institut für Geophysik Universit?t Münster

In the framework of a mineral system approach, a combination of components is required to develop a mineral system. This 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 deposits. Deep 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：

Investigating the Whole-lithosphere Structure of a Mineral System——Pathways and Source of Ore-forming Fluids Imaged with Magnetotelluric Modeling

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

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

维普期刊数据库

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

在线全文

学校读者我要写书评

暂无评论

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

维普期刊数据库

基于三维电性结构的谢通门-娘热地区深部动力学机制探讨

在线全文

学校读者我要写书评

暂无评论

基于三维电性结构的谢通门-娘热地区深部动力学机制探讨

作者：金胜盛跃 matthew j.comeau 雷璐璐董浩张乐天魏文博叶高峰卢占武

中新世以来,青藏高原经历了广泛的伸展作用,而南北向的裂谷带就是青藏高原中南部显著的构造特征之一,并且高原隆升密切也与伸展作用相关。研究区位于青藏高原中部谢通门-娘热地区28.5°N～30.5°N和87.5°E～89.5°E范围内(图1),共包括5... 详细信息

中新世以来,青藏高原经历了广泛的伸展作用,而南北向的裂谷带就是青藏高原中南部显著的构造特征之一,并且高原隆升密切也与伸展作用相关。研究区位于青藏高原中部谢通门-娘热地区28.5°N～30.5°N和87.5°E～89.5°E范围内(图1),共包括57个宽频大地电磁测站(MT),

关键词：电性结构三维反演下地壳印度板块深部动力学机制探讨

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

小黑麦对大麦黄矮病的耐性

国外农学（麦类作物） 1991年第3期 31-33页

作者： j.Collin 张辉

引言抗性或耐性品种的开发利用是控制大麦黄矮病(BYDV)的最有效手段之一。小麦中已被发现的耐性源都是数量性状的,没有鉴定出主基因(Qu-alset等,1973),而黑麦被认为是耐BYDV的(Os-wald和Houston,1953,comeau,1986)。许多科学家报导了小... 详细信息

引言抗性或耐性品种的开发利用是控制大麦黄矮病(BYDV)的最有效手段之一。小麦中已被发现的耐性源都是数量性状的,没有鉴定出主基因(Qu-alset等,1973),而黑麦被认为是耐BYDV的(Os-wald和Houston,1953,comeau,1986)。许多科学家报导了小黑麦对BYDV耐性遗传的变异性,并鉴定出许多耐性品系。与普通小麦相比,小黑麦对BYDV有很强的耐性,同时观察到春性小黑麦的耐性水平不如优良冬性小黑麦的高(comeau,1984a)。而关于小黑麦耐性的遗传规律以前未见报道。本研究的目的是为了确定3个春性和3个冬性小黑麦杂交组合对BYDV耐性的遗传基础。通过目测所得的症状评分和其它3种表示耐性性状进行遗传效应的评估。同时利用狭义遗传力对可见症状进行测算。

关键词：黑麦大麦黄矮病耐性小黑麦

维普期刊数据库