Collaborative Research: Volatile sources, eruption triggers, and magma ascent rates for mafic alkaline magmas at Nyiragongo and Nyamulagira volcanoes, DR Congo, East African Rift
合作研究:刚果民主共和国、东非大裂谷尼拉贡戈火山和尼亚穆拉吉拉火山的镁铁质碱性岩浆的挥发性来源、喷发触发因素和岩浆上升速率
基本信息
- 批准号:2043066
- 负责人:
- 金额:$ 22.72万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2021
- 资助国家:美国
- 起止时间:2021-05-01 至 2025-04-30
- 项目状态:未结题
- 来源:
- 关键词:
项目摘要
Nyiragongo and Nyamulagira, in the East African Rift, are two of the most active volcanoes in the world, and they pose major hazards to large populations living nearby. Many volcanoes that pose great risks to large populations are well studied and highly monitored with scientific instruments, but there is still a fundamental lack of understanding of many basic aspects of the Nyiragongo and Nyamulagira systems. This investigation will improve our understanding of these systems by focusing on (1) how magma forms beneath the two volcanoes, (2) how deeply and for how long magma is stored beneath the volcanoes before eruption, (3) what triggers eruptions to occur on the flanks of the volcanoes, in and near populated areas, and (4) how fast magma moves towards the surface during an eruption and how much warning time people would have in advance of an eruption. In addition to these aspects focused on hazards, this project will investigate the source of the carbon that is released as carbon dioxide by these volcanoes. Large amounts of carbon are likely stored in solid minerals inside the Earth beneath thick, old continental crust like that in East Africa, and when the crust gets pulled apart by rifting as in the East African Rift, the carbon contributes to magma formation. Nyiragongo is one of the largest emitters of carbon dioxide gas of any volcano worldwide, and better understanding the connection between carbon in minerals and magma formation beneath this volcano will help us better understand the Earth’s deep carbon cycle. Much of the research for this project will be conducted by graduate students at the University of Oregon and University of Wyoming as part of their scientific training. Collaboration with scientists at the Goma Volcano Observatory in the Democratic Republic of the Congo will include periodic videoconferences to share research results important for volcanic hazards monitoring. Public engagement will include a National Geographic Explorer’s Blog and several short articles for a general audience on volcanic hazards at Nyiragongo and Nyamulagira and release of carbon dioxide from volcanoes.In detail, the primary goals of this project are (1) to understand the time-integrated effects of lithospheric metasomatism on magma generation beneath Nyiragongo and Nyamulagira, and (2) to use the results as the starting point for a source-to-surface investigation of the plumbing systems, magma storage timescales, eruption triggering processes, and magma ascent rates for these volcanoes. Although these volcanoes are only 15 km apart, their eruption behavior and the types of lava they emit are profoundly different, with Nyiragongo erupting some of the most unusual lava types found anywhere on Earth. To understand the roles of lithospheric mantle and metasomatic veins as magma sources, we will use existing major and trace element and isotopic data together with new data on volatile contents of olivine-hosted melt inclusions to establish parental melt compositions and source lithologies. Our data and modeling approach will also provide important constraints on parental magma CO2 and S concentrations and magma fluxes for each volcano. Our proposed work will use existing tephra and lava samples and will focus on the many parasitic cones and tuff rings on the flanks of Nyiragongo and Nyamulagira, as these erupt more primitive compositions than the volcanoes’ central vents. For investigating the plumbing systems, we will use (1) melt inclusion volatile data to determine crystallization depths, (2) U-series mineral isochrons to determine crystal and magma residence times, (3) mineral zoning and diffusion chronometry to identify recharge and mixing processes that may trigger eruptions and yield precursory seismic signals, and (4) diffusive loss of H from melt inclusions to infer magma ascent rates during eruption, which likely influence explosivity. Our overarching goal is to produce geologically well-grounded, state-of-the-art geochemical and petrological data that improves our understanding of these volcanic systems and thereby improves hazard assessment models.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
位于东非裂谷的尼拉贡戈和尼亚穆拉吉拉火山是世界上最活跃的两座火山,它们对居住在附近的大量人口构成了重大威胁。许多对大量人口构成巨大风险的火山都得到了科学仪器的充分研究和高度监测,但对尼拉贡戈和尼亚穆拉吉拉系统的许多基本方面仍然缺乏根本的了解。这项研究将通过集中于(1)两座火山下如何形成岩浆,(2)喷发前岩浆在火山下方储存的深度和时间,(3)在人口稠密的地区和附近的火山侧翼发生的触发因素,以及(4)在喷发期间岩浆向地表移动的速度以及人们在喷发前有多长的预警时间,来提高我们对这些系统的理解。除了这些侧重于危害的方面外,该项目还将调查这些火山释放出的二氧化碳的来源。大量的碳很可能储存在地球内部的固体矿物中,位于厚厚的古老大陆地壳之下,就像在东非裂谷一样,当地壳被裂谷撕裂时,碳促成了岩浆的形成。尼拉贡戈火山是世界上二氧化碳气体排放量最大的火山之一,更好地了解矿物中的碳与火山下方岩浆形成之间的联系将有助于我们更好地了解地球深层的碳循环。该项目的大部分研究将由俄勒冈大学和怀俄明大学的研究生进行,作为他们科学培训的一部分。与刚果民主共和国戈马火山观测站的科学家合作将包括定期举行视频会议,分享对火山灾害监测重要的研究成果。公众参与将包括一个国家地理探险家的博客和几篇面向普通读者的短文,内容涉及尼拉贡戈和尼亚穆拉吉拉的火山灾害以及火山释放二氧化碳。具体而言,该项目的主要目标是(1)了解岩石圈交代作用对尼拉贡戈和尼亚穆拉吉拉之下岩浆生成的时间综合影响,以及(2)利用这些结果作为从源头到地表调查这些火山的管道系统、岩浆储存时标、喷发触发过程和岩浆上升速率的起点。尽管这些火山相距只有15公里,但它们的喷发行为和喷发的熔岩类型截然不同,尼拉贡戈火山喷发的熔岩类型是地球上最不寻常的。为了了解岩石圈地幔和交代脉作为岩浆来源的作用,我们将利用现有的主元素和微量元素和同位素数据以及有关橄榄石赋存的熔体包裹体挥发分含量的新数据来建立母质熔体成分和源岩性。我们的数据和模拟方法还将为每座火山的母质岩浆二氧化碳和S的浓度以及岩浆通量提供重要的约束。我们拟议的工作将使用现有的特弗拉和熔岩样本,并将重点放在尼拉贡戈和尼亚穆拉吉拉侧翼的许多寄生圆锥和凝灰岩环上,因为这些喷发出的成分比火山中心喷口更原始。为了研究管道系统,我们将使用(1)熔融包裹体挥发数据来确定结晶深度,(2)U系列矿物等时线用于确定晶体和岩浆的停留时间,(3)矿物分带和扩散计时法用于确定可能触发喷发和产生前兆地震信号的补给和混合过程,以及(4)熔融包裹体中氢的扩散损失,以推断喷发过程中可能影响爆炸性的岩浆上升速率。我们的总体目标是提供地质上有充分根据的、最先进的地球化学和岩石学数据,以增进我们对这些火山系统的了解,从而改进危险评估模型。该奖项反映了NSF的法定使命,并通过使用基金会的智力优势和更广泛的影响审查标准进行评估,被认为值得支持。
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)
数据更新时间:{{ journalArticles.updateTime }}
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
数据更新时间:{{ journalArticles.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ monograph.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ sciAawards.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ conferencePapers.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ patent.updateTime }}
Paul Wallace其他文献
思考を深めるための動機づけとは
是什么促使您深化思考?
- DOI:
- 发表时间:
2014 - 期刊:
- 影响因子:0
- 作者:
Kazuhiro Ohtani;Paul Wallace;Yosuke Yamaguchi;Machiko Sannomiya;久坂哲也,三宮真智子;三宮真智子 - 通讯作者:
三宮真智子
A randomized controlled non-inferiority trial of primary care-based facilitated access to an alcohol reduction website (EFAR-FVG): preliminary results
- DOI:
10.1186/1940-0640-10-s2-o29 - 发表时间:
2015-09-24 - 期刊:
- 影响因子:3.200
- 作者:
Pierluigi Struzzo;Roberto Della Vedova;Donatella Ferrante;Nicholas Freemantle;Charilaos Lygidakis;Francesco Marcatto;Emanuele Scafato;Francesca Scafuri;Costanza Tersar;Paul Wallace - 通讯作者:
Paul Wallace
Erratum to: Key Intervention Characteristics in e-Health: Steps Towards Standardized Communication
- DOI:
10.1007/s12529-017-9658-z - 发表时间:
2017-07-06 - 期刊:
- 影响因子:1.700
- 作者:
Bridgette M. Bewick;Steven J. Ondersma;Mette T. Høybye;Oskar Blakstad;Matthijs Blankers;Håvar Brendryen;Pål F. Helland;Ayna B. Johansen;Paul Wallace;Kristina Sinadinovic;Christopher Sundström;Anne H Berman - 通讯作者:
Anne H Berman
A pilot study of sexual lifestyle in a random sample of the population of Great Britain.
对英国人口的随机样本进行的性生活方式试点研究。
- DOI:
- 发表时间:
1989 - 期刊:
- 影响因子:0
- 作者:
Anne M Johnson;Jane Wadsworth;Paul Elliott;Linda Prior;Paul Wallace;Sally Blower;Norman L. Webb;Gordon I. Heald;David L. Miller;Michael W. Adler;Roy M. Anderson - 通讯作者:
Roy M. Anderson
Physician Involvement in Disease Management as Part of the CCM
作为 CCM 一部分的医生参与疾病管理
- DOI:
- 发表时间:
2005 - 期刊:
- 影响因子:0
- 作者:
Paul Wallace - 通讯作者:
Paul Wallace
Paul Wallace的其他文献
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
{{ truncateString('Paul Wallace', 18)}}的其他基金
Collaborative Research: Size, depth and longevity of magma reservoirs under Kilauea's rift zones: Integrating melt inclusion data and thermal modeling
合作研究:基拉韦厄裂谷带下岩浆储层的大小、深度和寿命:整合熔体包裹体数据和热模拟
- 批准号:
2020049 - 财政年份:2020
- 资助金额:
$ 22.72万 - 项目类别:
Standard Grant
Collaborative Research: Measurement of Copper Speciation in Basaltic Glasses using X-ray Absorption Spectroscopy, a New Window on Metal Solubility and Transport in Magmatic Systems
合作研究:使用 X 射线吸收光谱测量玄武岩玻璃中的铜形态,这是岩浆系统中金属溶解度和传输的新窗口
- 批准号:
1834959 - 财政年份:2019
- 资助金额:
$ 22.72万 - 项目类别:
Standard Grant
Collaborative Research: Determining Magma Storage Depths and Ascent Rates for the Erebus Volcanic Province, Antarctica Using Diffusive Water Loss from Olivine-hosted Melt Inclusion
合作研究:利用橄榄石熔体包裹体的扩散水损失确定南极洲埃里伯斯火山省的岩浆储存深度和上升速率
- 批准号:
1644027 - 财政年份:2017
- 资助金额:
$ 22.72万 - 项目类别:
Standard Grant
Volatile Clues to the Initial Controls on Large Explosive Volcanic Eruptions
大规模火山喷发初步控制的不稳定线索
- 批准号:
1524824 - 财政年份:2015
- 资助金额:
$ 22.72万 - 项目类别:
Standard Grant
Testing Models of Magma Generation in Warm-slab Subduction Zones: A Case Study of Volatiles in the Cascade Arc
暖板俯冲带岩浆生成模型测试:以喀斯喀特弧挥发物为例
- 批准号:
1119224 - 财政年份:2011
- 资助金额:
$ 22.72万 - 项目类别:
Continuing Grant
Experimental Investigation of Magma Generation in Subduction Zones: Hydrous Liquidus Phase Relations of Primitive Magmas from the Trans-Mexican Volcanic Belt
俯冲带岩浆生成的实验研究:跨墨西哥火山带原始岩浆的含水液相相关系
- 批准号:
0739065 - 财政年份:2008
- 资助金额:
$ 22.72万 - 项目类别:
Continuing Grant
DYD-RCT: On-line randomised controlled trial of an interactive web-based intervention for reducing alcohol consumption
DYD-RCT:减少饮酒的交互式网络干预的在线随机对照试验
- 批准号:
G0501298/1 - 财政年份:2006
- 资助金额:
$ 22.72万 - 项目类别:
Research Grant
Collaborative Research: Volatile Recycling and Magma Genesis in a Hot, Dry Subduction Zone: A Case Study of the Cascade Arc
合作研究:干热俯冲带的挥发物回收和岩浆成因:喀斯喀特弧的案例研究
- 批准号:
0440394 - 财政年份:2005
- 资助金额:
$ 22.72万 - 项目类别:
Continuing Grant
Acquisition of a New Electron Microprobe
获得新的电子显微探针
- 批准号:
0345908 - 财政年份:2004
- 资助金额:
$ 22.72万 - 项目类别:
Standard Grant
Collaborative Research: Phenocrysts and Bubbles in the Bishop Tuff Rhyolitic Magma
合作研究:主教凝灰岩流纹质岩浆中的斑晶和气泡
- 批准号:
0408615 - 财政年份:2004
- 资助金额:
$ 22.72万 - 项目类别:
Standard Grant
相似国自然基金
Research on Quantum Field Theory without a Lagrangian Description
- 批准号:24ZR1403900
- 批准年份:2024
- 资助金额:0.0 万元
- 项目类别:省市级项目
Cell Research
- 批准号:31224802
- 批准年份:2012
- 资助金额:24.0 万元
- 项目类别:专项基金项目
Cell Research
- 批准号:31024804
- 批准年份:2010
- 资助金额:24.0 万元
- 项目类别:专项基金项目
Cell Research (细胞研究)
- 批准号:30824808
- 批准年份:2008
- 资助金额:24.0 万元
- 项目类别:专项基金项目
Research on the Rapid Growth Mechanism of KDP Crystal
- 批准号:10774081
- 批准年份:2007
- 资助金额:45.0 万元
- 项目类别:面上项目
相似海外基金
Collaborative Research: Geophysical and geochemical investigation of links between the deep and shallow volatile cycles of the Earth
合作研究:地球深层和浅层挥发性循环之间联系的地球物理和地球化学调查
- 批准号:
2333102 - 财政年份:2024
- 资助金额:
$ 22.72万 - 项目类别:
Continuing Grant
Collaborative Research: Geophysical and geochemical investigation of links between the deep and shallow volatile cycles of the Earth
合作研究:地球深层和浅层挥发性循环之间联系的地球物理和地球化学调查
- 批准号:
2333101 - 财政年份:2024
- 资助金额:
$ 22.72万 - 项目类别:
Standard Grant
Collaborative Research: CCF Core: Small: User-transparent Data Management for Persistence and Crash-consistency in Non-volatile Memories
协作研究:CCF 核心:小型:用户透明的数据管理,以实现非易失性存储器中的持久性和崩溃一致性
- 批准号:
2313146 - 财政年份:2023
- 资助金额:
$ 22.72万 - 项目类别:
Standard Grant
SPX: Collaborative Research: Automated Synthesis of Extreme-Scale Computing Systems Using Non-Volatile Memory
SPX:协作研究:使用非易失性存储器自动合成超大规模计算系统
- 批准号:
2408925 - 财政年份:2023
- 资助金额:
$ 22.72万 - 项目类别:
Standard Grant
Collaborative Research: NSF GEO-NERC: The Cracking of a Craton: Understanding Volatile Release during Continental Breakup
合作研究:NSF GEO-NERC:克拉通的破裂:了解大陆破裂期间的挥发物释放
- 批准号:
2319897 - 财政年份:2023
- 资助金额:
$ 22.72万 - 项目类别:
Standard Grant
Collaborative Research: CCF Core: Small: User-transparent Data Management for Persistence and Crash-consistency in Non-volatile Memories
协作研究:CCF 核心:小型:用户透明的数据管理,以实现非易失性存储器中的持久性和崩溃一致性
- 批准号:
2415473 - 财政年份:2023
- 资助金额:
$ 22.72万 - 项目类别:
Standard Grant
Collaborative Research: Tracing ca. 4 billion years of volatile cycling in magmas and fluids: insights from halogens in synthetic and natural zircons
合作研究:追踪大约。
- 批准号:
2240756 - 财政年份:2023
- 资助金额:
$ 22.72万 - 项目类别:
Standard Grant
Collaborative Research: CCF Core: Small: User-transparent Data Management for Persistence and Crash-consistency in Non-volatile Memories
协作研究:CCF 核心:小型:用户透明的数据管理,以实现非易失性存储器中的持久性和崩溃一致性
- 批准号:
2313147 - 财政年份:2023
- 资助金额:
$ 22.72万 - 项目类别:
Standard Grant
Collaborative Research: Tracing ca. 4 billion years of volatile cycling in magmas and fluids: insights from halogens in synthetic and natural zircons
合作研究:追踪大约。
- 批准号:
2240755 - 财政年份:2023
- 资助金额:
$ 22.72万 - 项目类别:
Standard Grant
Collaborative Research: NSF GEO-NERC: The Cracking of a Craton: Understanding Volatile Release during Continental Breakup
合作研究:NSF GEO-NERC:克拉通的破裂:了解大陆破裂期间的挥发物释放
- 批准号:
2319898 - 财政年份:2023
- 资助金额:
$ 22.72万 - 项目类别:
Standard Grant