Constraining Mantle Rheology at Lithospheric Conditions by Modeling Seamount Induced Deformation and Gravity Anomalies
通过模拟海山引起的变形和重力异常来约束岩石圈条件下的地幔流变
基本信息
- 批准号:1114168
- 负责人:
- 金额:$ 19.66万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2011
- 资助国家:美国
- 起止时间:2011-10-01 至 2015-09-30
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The surface layer of the solid Earth is called lithosphere that is on average about 100 km thick and includes the crust and mantle components. The lithosphere is relatively cold (i.e., temperature less than ~1200 C) and deforms in both brittle and plastic fashions under stresses. Mantle rheology at lithospheric conditions (i.e., temperature less than 1200 C) describes quantitatively the lithospheric deformation under stress, and is important for understanding long-term tectonic deformation, mountain building, volcanism, lithospheric thinning, and plate tectonics. Most studies on mantle lithospheric rheology employ a laboratory approach and investigate the response of rock samples or specimen to applied stress in laboratory settings. Although laboratory studies have provided many important insights on lithospheric rheology, it remains challenging to directly apply them in studies of lithospheric deformation processes. This project seeks to constrain lithospheric rheology by directly modeling observations of surface and Moho deflections and gravity anomalies associated with seamount and oceanic island loads at plate interiors and in subduction zones. Seamounts and oceanic islands are formed on oceanic lithosphere due to volcanic eruptions on a short time scale (~ 1 million years or less). They cause significant deformation on oceanic lithosphere that can be observed in deformation of sedimentary layers and gravity anomalies. The loading of seamount and oceanic islands (e.g., Hawaii) on lithosphere can therefore be viewed as a natural laboratory to study the lithospheric response to stress or loading. This project seeks to address the following questions: 1) What is the lithospheric strength (stress) and rheology at plate interiors and in subduction zones? 2) How does lithospheric viscosity vary with temperature (i.e., activation energy)? 3) Is the mantle rheology inferred from modeling field-based observations consistent with that inferred from recent laboratory studies? 4) What are the rheological effects of subduction processes such as faulting, bending and hydration, as seen by subduction zone seamounts? The specific tasks for the proposed two-year project include: 1) to formulate 2- and 3-D finite element viscoelastic loading models with realistic rheologies including viscoelastic, nonlinear creep, and frictional (i.e., Byerlee's law) rheology, 2) to use recent compilations of elastic plate thickness, plate age, load age and size for ~80 seamounts and oceanic islands to constrain mantle rheology at lithospheric conditions including the activation energy, 3) to use seismically imaged deflected crust data, load and lithospheric ages, gravity data for selected intraplate oceanic islands (Hawaii, La Reunion, Canary, Cape Verde, and Marquesas) and subduction zone seamounts (the Louisville Ridge seamount near the Kermadec trench and the Daiichi-Kashima seamount in the Japan Trench) in 3-D loading models to further constrain the rheology in different tectonic settings.This project is supported by the Geophysics and Marine Geology & Geophysics Programs.
固体地球的表层称为岩石圈,平均厚度约为100公里,包括地壳和地幔成分。岩石圈相对较冷(即,温度低于~1200 ℃),并在应力下以脆性和塑性方式变形。岩石圈条件下的地幔流变学(即,温度低于1200 ℃)定量描述了岩石圈在应力作用下的变形,对于理解长期构造变形、造山作用、火山作用、岩石圈减薄和板块构造具有重要意义。地幔岩石圈流变学的研究大多采用实验室方法,并在实验室环境中研究岩石样品或标本对外加应力的响应。尽管实验室研究为岩石圈流变学提供了许多重要的见解,但将其直接应用于岩石圈变形过程的研究仍然具有挑战性。该项目旨在通过直接模拟与板块内部和俯冲带海山和海洋岛屿负荷相关的地表和莫霍面偏转和重力异常观测来约束岩石圈流变学。海山和洋岛是在短时间尺度(约100万年或更短)的火山喷发作用下在大洋岩石圈上形成的。它们对海洋岩石圈造成显著的变形,这种变形可以在沉积层变形和重力异常中观察到。海山和大洋岛屿的负荷(例如,夏威夷)对岩石圈的作用可以看作是研究岩石圈对应力或载荷响应的天然实验室。该项目旨在解决以下问题:1)板块内部和俯冲带的岩石圈强度(应力)和流变性是什么?2)岩石圈粘度如何随温度变化(即,活化能)?3)从模拟现场观测中推断的地幔流变学与最近的实验室研究推断的一致吗?4)从俯冲带海山看,俯冲过程如断层、弯曲和水化作用的流变学效应是什么? 拟议的两年项目的具体任务包括:1)制定二维和三维有限元粘弹性加载模型与现实的流变学,包括粘弹性,非线性蠕变和摩擦(即,Byerlee定律)流变学; 2)使用最近汇编的约80座海山和大洋岛屿的弹性板块厚度、板块年龄、载荷年龄和大小来约束岩石圈条件下的地幔流变学,包括活化能; 3)使用选定的板内大洋岛屿的地震成像偏转地壳数据、载荷和岩石圈年龄、重力数据(夏威夷、留尼汪岛、加那利群岛、佛得角、和马克萨斯)和俯冲带海山(克马德克海沟附近的路易斯维尔海岭和日本海沟的第一鹿岛海岭)三维加载模型,以进一步约束流变学在不同的构造环境&。
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 }}
Shijie Zhong其他文献
The effects of laterally varying icy shell structure on the tidal response of Ganymede and Europa
横向变化的冰壳结构对木卫三和木卫二潮汐响应的影响
- DOI:
10.1002/2013je004570 - 发表时间:
2014 - 期刊:
- 影响因子:0
- 作者:
J. Wahr;J. Wahr;Shijie Zhong - 通讯作者:
Shijie Zhong
Goal-Oriented Bayesian Optimal Experimental Design for Nonlinear Models using Markov Chain Monte Carlo
使用马尔可夫链蒙特卡罗的非线性模型的面向目标贝叶斯最优实验设计
- DOI:
- 发表时间:
2024 - 期刊:
- 影响因子:0
- 作者:
Shijie Zhong;Wanggang Shen;Tommie A. Catanach;Xun Huan - 通讯作者:
Xun Huan
Separation and Purification of Quinolone Alkaloids from the Chinese Herbal Medicine Evodia rutaecarpa (Juss.) Benth by High Performance Counter-Current Chromatography
高效逆流色谱法分离纯化中药吴茱萸中喹诺酮类生物碱
- DOI:
- 发表时间:
2011 - 期刊:
- 影响因子:0
- 作者:
Shijie Zhong;Hao;A. Peng;Jie Shi;Shichao He;Shucai Li;Xia Ye;Ming;Li - 通讯作者:
Li
Influence of thermochemical piles on topography at Earth's core–mantle boundary
- DOI:
10.1016/j.epsl.2007.07.015 - 发表时间:
2007-09-30 - 期刊:
- 影响因子:
- 作者:
Teresa Mae Lassak;Allen K. McNamara;Shijie Zhong - 通讯作者:
Shijie Zhong
The relationship between gravity anomalies and topography in the Pacific Ocean and its implications for flexural isostasy, mantle viscosity and dynamics
太平洋重力异常与地形之间的关系及其对挠曲均衡、地幔粘度和动力学的影响
- DOI:
10.1016/j.epsl.2025.119246 - 发表时间:
2025-04-01 - 期刊:
- 影响因子:5.100
- 作者:
An Yang;A.B. Watts;Shijie Zhong - 通讯作者:
Shijie Zhong
Shijie Zhong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('Shijie Zhong', 18)}}的其他基金
Investigating Effects of Transient and Non-Newtonian Mantle Viscosity on Glacial Isostatic Adjustment Process and their Implications for GPS Observations in Antarctica
研究瞬态和非牛顿地幔粘度对冰川均衡调整过程的影响及其对南极 GPS 观测的影响
- 批准号:
2333940 - 财政年份:2024
- 资助金额:
$ 19.66万 - 项目类别:
Standard Grant
EAR - Climate; Investigating Effects of 3-Dimensional and Non-Newtonian Mantle Viscosity on Relative Sea-Level Changes and Deglaciation History Since the Last Glacial Maximum
EAR——气候;
- 批准号:
2222115 - 财政年份:2022
- 资助金额:
$ 19.66万 - 项目类别:
Standard Grant
Constraining Frictional and Low-Temperature Plastic Rheology of Oceanic Lithosphere by Modeling Observations of Load-Induced Deformation from the Hawaiian Islands to Japan Trench
通过模拟从夏威夷群岛到日本海沟的荷载引起的变形观测来约束海洋岩石圈的摩擦和低温塑性流变
- 批准号:
1940026 - 财政年份:2019
- 资助金额:
$ 19.66万 - 项目类别:
Standard Grant
Contraining the large-scale dynamics and structure of the lower mantle using observations of the geoid, dynamic topography and plate tectonics
利用大地水准面、动态地形和板块构造的观测来约束下地幔的大尺度动力学和结构
- 批准号:
1645245 - 财政年份:2017
- 资助金额:
$ 19.66万 - 项目类别:
Continuing Grant
Investigating the consequences of Supercontinent Pangea assembly and breakup on the time evolution of large-scale mantle thermochemical structures and magmatism
研究超大陆盘古大陆的组装和破碎对大尺度地幔热化学结构和岩浆作用时间演化的影响
- 批准号:
1015669 - 财政年份:2010
- 资助金额:
$ 19.66万 - 项目类别:
Continuing Grant
CSEDI Collaborative Research: Neutrino Geophysics: collaboration between geology and particle physics
CSEDI 合作研究:中微子地球物理学:地质学和粒子物理学之间的合作
- 批准号:
0855712 - 财政年份:2009
- 资助金额:
$ 19.66万 - 项目类别:
Continuing Grant
Collaborative Research: Understanding the Dynamics of the Earth: High resolution mantle convection simulation on petascale computers
合作研究:了解地球动力学:千万亿级计算机上的高分辨率地幔对流模拟
- 批准号:
0749045 - 财政年份:2007
- 资助金额:
$ 19.66万 - 项目类别:
Continuing Grant
The Formation of Long-wavelength Mantle Structure and Its Relationship to Supercontinent Cycles and True Polar Wander
长波长地幔结构的形成及其与超大陆旋回和真极地漂移的关系
- 批准号:
0711366 - 财政年份:2007
- 资助金额:
$ 19.66万 - 项目类别:
Continuing Grant
Acquisition of a PC Cluster for Geophysical Modeling
获取用于地球物理建模的 PC 集群
- 批准号:
0650957 - 财政年份:2007
- 资助金额:
$ 19.66万 - 项目类别:
Standard Grant
Constraining Thermo-Chemical Mantle Convection from Observations of Mantle Plumes and Upper Mantle Temperature
从地幔柱和上地幔温度的观测来约束地幔热化学对流
- 批准号:
0538255 - 财政年份:2006
- 资助金额:
$ 19.66万 - 项目类别:
Standard Grant
相似海外基金
Postdoctoral Fellowship: EAR-PF: Investigating spatiotemporal variability of forearc mantle wedge serpentinization and rheology during non-steady state subduction
博士后奖学金:EAR-PF:研究非稳态俯冲过程中弧前地幔楔形蛇纹石化和流变学的时空变化
- 批准号:
2305636 - 财政年份:2023
- 资助金额:
$ 19.66万 - 项目类别:
Fellowship Award
Evolution and rheology of oceanic uppermost mantle from seismic velocity modeling
地震速度模拟中大洋上地幔的演化和流变学
- 批准号:
21K14009 - 财政年份:2021
- 资助金额:
$ 19.66万 - 项目类别:
Grant-in-Aid for Early-Career Scientists
CAREER: Investigating composition and rheology of circum-Pacific mantle wedges with body-wave attenuation
职业:利用体波衰减研究环太平洋地幔楔的组成和流变学
- 批准号:
2042553 - 财政年份:2021
- 资助金额:
$ 19.66万 - 项目类别:
Continuing Grant
Experimental constraints on the rheology of the mantle lithosphere at the base of the seismogenic zone
地震带底部地幔岩石圈流变学的实验约束
- 批准号:
2054522 - 财政年份:2021
- 资助金额:
$ 19.66万 - 项目类别:
Continuing Grant
Transient rheology of upper mantle inferred from the postseismic deformation of 2011 Tohoku-oki earthquake
从2011年东北大地震震后形变推断的上地幔瞬态流变学
- 批准号:
21F20016 - 财政年份:2021
- 资助金额:
$ 19.66万 - 项目类别:
Grant-in-Aid for JSPS Fellows
Rheology of Multi-Phase Mantle Rocks to 800 km Depth
800 公里深度多相地幔岩石的流变学
- 批准号:
1953849 - 财政年份:2020
- 资助金额:
$ 19.66万 - 项目类别:
Continuing Grant
Rheology of Lower Mantle Perovskites
下地幔钙钛矿的流变学
- 批准号:
1547556 - 财政年份:2016
- 资助金额:
$ 19.66万 - 项目类别:
Continuing Grant
The Influence of Mantle Rheology on the Early Differentiation of Icy Satellites
地幔流变学对冰卫星早期分化的影响
- 批准号:
248760695 - 财政年份:2014
- 资助金额:
$ 19.66万 - 项目类别:
Priority Programmes
EAGER: Mantle Rheology and the Dynamics of Suboceanic Mantle: A Bottom-Up Approach
EAGER:地幔流变学和海底地幔动力学:自下而上的方法
- 批准号:
1417327 - 财政年份:2014
- 资助金额:
$ 19.66万 - 项目类别:
Standard Grant
Collaborative Research: The impact of time-dependent mantle rheology and 3-D structure on models and observations of Glacial Isostatic Adjustment
合作研究:随时间变化的地幔流变学和三维结构对冰川均衡调整模型和观测的影响
- 批准号:
1315368 - 财政年份:2013
- 资助金额:
$ 19.66万 - 项目类别:
Continuing Grant