MAGIC MT - Uplift of the Appalachians
MAGIC MT - 阿巴拉契亚山脉的隆起
基本信息
- 批准号:1460257
- 负责人:
- 金额:$ 26.6万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:2015
- 资助国家:美国
- 起止时间:2015-06-01 至 2018-05-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Non-technical summaryThe eastern edge of the North American continent is located far from currently active boundaries of tectonic plates, and is thus often considered relatively "quiet" in plate tectonic terms. However, the eastern margin of North America has experienced a long and rich plate tectonic history, most recently being involved in the break-up of North America and Europe and the formation of the Atlantic Ocean. That break-up involved multiple important geologic processes, including magmatism, stretching of the continent, and uplift that is responsible for the formation of the Appalachian Mountains.Although most of this activity finished long ago, there is evidence to suggest the Appalachians are even now being partially supported by flow of the mantle beneath the mountains. We are using electric and magnetic fields of the earth recorded at the surface to image the structure of the continent and the properties of the underlying convecting mantle, in order to better understand the processes that control modern day topography and those involved in continental break-up, or rifting. The project partly supports the education of a PhD student as well as training of highly skilled technical staff, and the experiment uses equipment manufactured by Cape Abilities, a non-profit company on Cape Cod that finds work for people with disabilities.Technical summaryWe are carrying out fieldwork to collect magnetotelluric (MT) data in a profile of about 28 stations across the Appalachians, from Ohio to Virginia. The MT method measures naturally occurring electric and magnetic fields at the surface of the earth, and uses this information to image structure to depths of several hundred km below the surface. The method measures the ability of the earth to conduct electrical current, a property that is sensitive to temperature as well as to the presence of fluids such as water or magma. We can construct a cross sectional image of the deep structure along the entire length of the profile. The survey is coincident with an ongoing seismic experiment, and we are working with the principal investigators of that project to carry out a coordinated joint interpretation of results constraining lithospheric thickness, hydration state of the mantle, and the presence of any partial melt associated with mantle upwelling.
非技术性总结北美大陆的东部边缘距离目前活跃的板块边界很远,因此从板块构造角度来看通常被认为相对“安静”。 然而,北美东缘经历了漫长而丰富的板块构造历史,最近参与了北美和欧洲的解体以及大西洋的形成。 这一分裂涉及多个重要的地质过程,包括岩浆活动,大陆的拉伸,以及导致阿巴拉契亚山脉形成的隆起。虽然大部分活动在很久以前就结束了,但有证据表明阿巴拉契亚山脉现在甚至部分受到山脉下方地幔流动的支撑。我们正在使用在地表记录的地球电场和磁场来成像大陆的结构和下面的对流地幔的特性,以便更好地了解控制现代地形的过程以及与大陆分裂或裂谷有关的过程。该项目部分支持博士生的教育以及高技能技术人员的培训,实验使用Cape Abilities制造的设备,Cape Abilities是科德角的一家非营利公司,为残疾人提供工作。技术摘要我们正在进行实地工作,收集阿巴拉契亚山脉从俄亥俄州到弗吉尼亚州约28个站点的大地电磁(MT)数据。 大地电磁法测量地球表面自然产生的电场和磁场,并利用这些信息对地表以下数百公里深处的结构进行成像。该方法测量地球传导电流的能力,这是一种对温度以及水或岩浆等流体的存在敏感的特性。我们可以构建沿着剖面的整个长度沿着的深层结构的横截面图像。 该调查与正在进行的地震实验相吻合,我们正在与该项目的主要研究人员合作,对限制岩石圈厚度、地幔水合状态以及与地幔上涌相关的任何部分熔融的存在的结果进行协调的联合解释。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Robert Evans其他文献
Optical characterisation of three reference Dobsons in the ATMOZ Project – verification of G. M. B. Dobson's original specifications
ATMOZ 项目中三个参考 Dobson 的光学特性 – 验证 G. M. B. Dobson 的原始规格
- DOI:
10.5194/amt-11-1989-2018 - 发表时间:
2017 - 期刊:
- 影响因子:0
- 作者:
U. Köhler;S. Nevas;G. Mcconville;Robert Evans;M. Smíd;M. Staněk;A. Redondas;Fritz Schönenborn - 通讯作者:
Fritz Schönenborn
Decay of correlation functions in hard-sphere mixtures: structural crossover.
硬球混合物中相关函数的衰减:结构交叉。
- DOI:
10.1063/1.1798057 - 发表时间:
2004 - 期刊:
- 影响因子:0
- 作者:
C. Grodon;Marjolein Dijkstra;Robert Evans;Roland Roth - 通讯作者:
Roland Roth
Longitudinal shrinkage behaviour of compression wood in radiata pine
- DOI:
10.1007/s00226-008-0228-z - 发表时间:
2008-10-11 - 期刊:
- 影响因子:3.000
- 作者:
Ping Xu;Huawu Liu;Robert Evans;Lloyd A. Donaldson - 通讯作者:
Lloyd A. Donaldson
Solvation force in two-dimensional Ising strips.
二维伊辛条中的溶剂力。
- DOI:
- 发表时间:
1994 - 期刊:
- 影响因子:0
- 作者:
Robert Evans;J. Stecki - 通讯作者:
J. Stecki
不同海拔青海云杉木材细胞结构对气候因素的响应
- DOI:
- 发表时间:
2015 - 期刊:
- 影响因子:0
- 作者:
徐金梅;张冉;吕建雄;Robert Evans - 通讯作者:
Robert Evans
Robert Evans的其他文献
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{{ truncateString('Robert Evans', 18)}}的其他基金
Collaborative Research: The influence of incoming plate structure and fluids on arc melt generation at the Lesser Antilles subduction system
合作研究:来料板结构和流体对小安的列斯群岛俯冲系统电弧熔化产生的影响
- 批准号:
2316136 - 财政年份:2024
- 资助金额:
$ 26.6万 - 项目类别:
Continuing Grant
Collaborative Research: Dry Rifting In the Albertine-Rhino Graben (DRIAR), Uganda
合作研究:乌干达艾伯丁-犀牛地堑 (DRIAR) 的干裂谷
- 批准号:
2021692 - 财政年份:2020
- 资助金额:
$ 26.6万 - 项目类别:
Continuing Grant
Porosity Structure and Earthquake Rupture Dynamics at the GOFAR Fracture Zone
GOFAR断裂带的孔隙结构和地震破裂动力学
- 批准号:
1922528 - 财政年份:2020
- 资助金额:
$ 26.6万 - 项目类别:
Continuing Grant
Collaborative Research: Marine EM Survey of Fluids in the Alaskan Megathrust
合作研究:阿拉斯加巨型逆冲断层流体的海洋电磁勘探
- 批准号:
1654619 - 财政年份:2018
- 资助金额:
$ 26.6万 - 项目类别:
Continuing Grant
RAPID: Collaborative Research: Response to the 2016 M5.8 Pawnee Earthquake: Using MT to map Fluids in Faults
RAPID:协作研究:响应 2016 年 M5.8 波尼地震:使用 MT 绘制断层中的流体图
- 批准号:
1664473 - 财政年份:2016
- 资助金额:
$ 26.6万 - 项目类别:
Standard Grant
Collaborative Research: A Pilot Study for Electromagnetic Surveying of Freshwater Resources Beneath the US Atlantic Continental Shelf
合作研究:美国大西洋大陆架淡水资源电磁测量试点研究
- 批准号:
1459035 - 财政年份:2015
- 资助金额:
$ 26.6万 - 项目类别:
Continuing Grant
Structure of the Lithosphere - Asthenosphere Boundary Across the Northeastern US Margin from Seafloor MT Data
从海底 MT 数据看美国东北部边缘的岩石圈-软流圈边界结构
- 批准号:
1536161 - 财政年份:2015
- 资助金额:
$ 26.6万 - 项目类别:
Standard Grant
SBIR Phase I: High Efficiency Gasification of Wood for Integrated Production of Hydrogen, Power, Wood Pellets and Activated Carbon
SBIR 第一阶段:木材高效气化,综合生产氢气、电力、木屑颗粒和活性炭
- 批准号:
1047320 - 财政年份:2011
- 资助金额:
$ 26.6万 - 项目类别:
Standard Grant
MRI-R2: Development of the New Generation of Long-Period Seafloor MT Instrumentation
MRI-R2:新一代长周期海底大地电磁仪器的开发
- 批准号:
0958878 - 财政年份:2010
- 资助金额:
$ 26.6万 - 项目类别:
Standard Grant
Collaborative Research: An Earthscope Magnetotelluric Survey of the Southern Cascadia Subduction System, Washington
合作研究:华盛顿州卡斯卡迪亚南部俯冲系统的 Earthscope 大地电磁勘探
- 批准号:
0844041 - 财政年份:2009
- 资助金额:
$ 26.6万 - 项目类别:
Standard Grant
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