Collaborative Research: The Peru Subduction Experiment (PeruSE), a Seismic Investigation of the Role of Water in the Lithospheric Dynamics of Subduction Zones
合作研究:秘鲁俯冲实验(PeruSE),对水在俯冲带岩石圈动力学中的作用的地震研究
基本信息
- 批准号:1045683
- 负责人:
- 金额:$ 17.19万
- 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:2011-03-01 至 2014-02-28
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
As the recent history of earthquakes in Indonesia, China, Haiti and Chile has demonstrated, subduction zones generate the largest earthquakes. Earthquakes occur where the rock is brittle and stresses are high enough to overcome friction. The friction depends on the properties of the rock and water content, and whether the water is free to exert pore pressure, or is crystallographically bound in metamorphic rocks. Released water causes explosive volcanism. Understanding the forces and earthquake mechanisms is important for estimating hazard. In particular, we seek to use seismic and interdisciplinary data to understand how dehydration takes place in the Peru subduction zone, its effect on friction, rheology and volcanism. The work is important both to estimate the earthquake and volcanic hazard of major cities in the region as well as understanding past tectonics, and the processes that led to the tectonic structure and the mineralization of continents.Peru is an excellent place to study the relationship between the pathways of water, earthquakes, seismic coupling and volcanism. In particular, in southern Peru the slab has a steep dip and volcanoes occur above it where the slab reaches depths of about 100 km. In contrast, further north the slab dip is shallow and there are no volcanoes, but deep earthquakes occur at depths of ~600 km, some of the deepest in the world. Seismic array deep-sounding is the premier method to infer properties deep in the Earth. The goals are to investigate the contrasts in the properties of the crust and mantle, and contrasts in earthquake activity across the transition from non-volcanic flat-slab to volcanic steep-slab subduction and to infer the water pathways. Water has a major effect on friction, seismic velocities, Q, metamorphic changes, melting, and the generation of earthquakes. Seismic tomography and seismicity will be used to map these effects in 3D. Our seismic array experiment involves a broadband network in Peru comprised of 4 linear networks. Line 1 consists if 50 stations that run from the coast near Arequipa to Lake Titicaca across the steep slab. Line 3 is parallel but runs further north through Cusco above the flat-slab region. Lines 2 and 4 are connecting lines along the Andes and the coast respectively. The four lines form a box-shaped network of 125 stations spanning the transition. Each line is comprised of twenty five to fifty broadband seismic stations at 6-12 km spacing and will record for one to two years to give an unprecedented coverage of the structures and seismicity of the region. We would like to answer fundamental questions on the mechanics and mineralization of subduction.Our experiment involves many Peruvians both professionally in universities and institutes and the general population who host our stations. Peru is threatened by large earthquakes, such as the recent Pisco 2007 devastating earthquake and the 2001 event demonstrated. Tsunamis are also a threat. The more educated are the local population the better prepared. We will make the data available to the community through IRIS.This project is funded by the Geophysics Program and the Americas Program of the Office of International Science and Engineering.
正如最近在印度尼西亚、中国、海地和智利发生的地震所证明的那样,俯冲带产生了最大的地震。地震发生在岩石脆性大、应力大到足以克服摩擦的地方。摩擦力取决于岩石的性质和水的含量,以及水是自由施加孔压,还是在变质岩中结晶结合。释放出的水会引起火山爆发。了解地震力和地震机制对于估计风险很重要。特别是,我们试图使用地震和跨学科数据来了解秘鲁俯冲带脱水是如何发生的,它对摩擦、流变学和火山作用的影响。这项工作对评估该地区主要城市的地震和火山灾害以及了解过去的构造和导致大陆构造和矿化的过程都很重要。秘鲁是研究水、地震、地震耦合和火山作用之间关系的绝佳地点。尤其是在秘鲁南部,冰板的倾角很陡,火山在其上方发生,冰板的深度约为100公里。相比之下,更靠北的板块倾角较浅,没有火山,但深层地震发生在约600公里深处,其中一些是世界上最深的地震。地震台阵测深是推断地球深部性质的首选方法。其目的是研究地壳和地幔性质的对比,以及从非火山平板向火山陡板俯冲过渡期间地震活动的对比,并推断水的路径。水对摩擦、地震速度、Q、变质变化、熔融和地震的发生有重要影响。地震层析成像和地震活动将被用来在3D中绘制这些影响的地图。我们的地震台阵实验涉及秘鲁的一个由4个线性网络组成的宽带网络。1号线由50个车站组成,从阿雷基帕附近的海岸延伸到陡峭的喀喀湖。3号线是平行的,但在平板区上方穿过库斯科进一步向北延伸。2号线和4号线分别是安第斯山脉和海岸的连接线。这四条线路形成了一个由125个车站组成的盒子状网络,横跨过渡。每条线路由25到50个宽带地震台组成,间隔6-12公里,将记录一到两年,以前所未有的覆盖该地区的构造和地震活动。我们想回答有关俯冲的力学和成矿作用的基本问题。我们的实验涉及许多秘鲁人,包括大学和研究所的专业人员,以及驻扎在我们空间站的普通民众。秘鲁受到大地震的威胁,例如最近发生的2007年皮斯科毁灭性地震和2001年发生的地震。海啸也是一种威胁。当地居民受教育程度越高,准备就越充分。我们将通过IRIS向公众提供这些数据。这个项目由地球物理项目和国际科学与工程办公室的美洲项目资助。
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 Clayton其他文献
Using Yarning to Improve Cardiac Care at a Metropolitan Hospital
- DOI:
10.1016/j.hlc.2019.05.107 - 发表时间:
2019-01-01 - 期刊:
- 影响因子:
- 作者:
Karen Daws;Ethan Quinn;Jane Taylor;Sally Kemp;Robert Clayton;Ruby Tribe;Ashley Barnard;Jane Notman;Ianthe Tesselaar - 通讯作者:
Ianthe Tesselaar
Quantifying and reducing uncertainty in tidal energy yield assessments
- DOI:
10.7488/era/379 - 发表时间:
2020-03 - 期刊:
- 影响因子:0
- 作者:
Robert Clayton - 通讯作者:
Robert Clayton
The Endurance Rocket Mission
- DOI:
10.1007/s11214-022-00908-0 - 发表时间:
2022-06-21 - 期刊:
- 影响因子:7.400
- 作者:
Glyn Collinson;Alex Glocer;Rob Pfaff;Aroh Barjatya;Scott Bissett;Kolbjørn Blix;Aaron Breneman;Jim Clemmons;Francis Eparvier;Ted Gass;Robert Michell;David Mitchell;Suzie Imber;Ahmed Ghalib;Hassanali Akbari;Glen Ansted;Lisa Baddeley;Håvard Bahr;Gary Bain;Brian Bonsteel;Henry Borgen;Daniel Bowden;Dave Bowker;Tim Cameron;Meredith Campbell;Philip Cathell;Dennis Chornay;Robert Clayton;Larry Conser;Lance Davis;Sean Donohue;Leif Jonny Eilertsen;Charles Etheridge;Nathan Graves;Ingemar Häggstrøm;Preben Hanssen;Herbert Haugh;Espen Helgesen;Jordan Henderson;Kim Roar Herseth;John Hickman;Kent-Gøran Jensen;Travis Jester;Eric Johnson;Hunter Johnson;Andrew Kavanagh;Max King;David Knight;Russell Laman;Trevor Lankford;Rolf Lien;Mark Lester;Gordon Marsh;Steve Martin;Norman Morris;Long Nguyen;Richard Nelson;Wale Ogundere;Karl Henning Osbakk;Dave Page;Joe Polidan;Devon Raley;Richard Raymond;Ellen Robertson;Giovanni Rosanova;Traci Rosnack;Belinda Serabian;Roger Simonsen;Jan Arne Søreng;Jostein Sveen;Diana Swanson;Robert Swift;Paulo Uribe;Henry Valentine;Frank Waters;Libby West;Tim Wilson - 通讯作者:
Tim Wilson
<strong>Proteomic analysis of urine reveals potential markers for CLN2 Batten disease</strong>
- DOI:
10.1016/j.ymgme.2015.12.289 - 发表时间:
2016-02-01 - 期刊:
- 影响因子:
- 作者:
Wendy E. Heywood;Ivan Doykov;Ernestas Sirka;Robert Clayton;Barbara Csányi;Maureen Cleary;Emma Footitt;Anupam Chakrapani;Lara Abulhoul;Stephanie Grunewald;Sara Mole;Paul Gissen;Kevin Mills - 通讯作者:
Kevin Mills
Earth’s ambipolar electrostatic field and its role in ion escape to space
地球的双极静电场及其在离子逸向太空的作用
- DOI:
10.1038/s41586-024-07480-3 - 发表时间:
2024-08-28 - 期刊:
- 影响因子:48.500
- 作者:
Glyn A. Collinson;Alex Glocer;Robert Pfaff;Aroh Barjatya;Rachel Conway;Aaron Breneman;James Clemmons;Francis Eparvier;Robert Michell;David Mitchell;Suzie Imber;Hassanali Akbari;Lance Davis;Andrew Kavanagh;Ellen Robertson;Diana Swanson;Shaosui Xu;Jacob Miller;Timothy Cameron;Dennis Chornay;Paulo Uribe;Long Nguyen;Robert Clayton;Nathan Graves;Shantanab Debchoudhury;Henry Valentine;Ahmed Ghalib - 通讯作者:
Ahmed Ghalib
Robert Clayton的其他文献
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{{ truncateString('Robert Clayton', 18)}}的其他基金
Collaborative Research: A New 3-D Velocity and Structural Model of the Northern Basins in the Los Angeles Region for Improved Ground Motion Estimates
合作研究:洛杉矶地区北部盆地的新 3D 速度和结构模型,用于改进地震动估计
- 批准号:
2105358 - 财政年份:2021
- 资助金额:
$ 17.19万 - 项目类别:
Standard Grant
Collaborative Research: Improving the Interpretability of Tomographic Images Using Geologically Motivated Parametrizations
合作研究:利用地质驱动的参数化提高断层扫描图像的可解释性
- 批准号:
2011107 - 财政年份:2020
- 资助金额:
$ 17.19万 - 项目类别:
Standard Grant
Collaborative Research: Understanding the crustal link between the Columbia River flood basalts and lithospheric foundering.
合作研究:了解哥伦比亚河洪水玄武岩与岩石圈沉没之间的地壳联系。
- 批准号:
1546635 - 财政年份:2016
- 资助金额:
$ 17.19万 - 项目类别:
Continuing Grant
Imaging the Eastern Trans-Mexican Volcanic Belt
跨墨西哥东部火山带成像
- 批准号:
1645063 - 财政年份:2016
- 资助金额:
$ 17.19万 - 项目类别:
Continuing Grant
Using Dense Seismic Arrays to Determine Structure in the Los Angeles Basin
使用密集地震台阵确定洛杉矶盆地的结构
- 批准号:
1520081 - 财政年份:2015
- 资助金额:
$ 17.19万 - 项目类别:
Continuing Grant
Collaborative Research: Is the Isabella anomaly a fossil slab or the foundered lithospheric root of the Sierra Nevada batholith?
合作研究:伊莎贝拉异常是一块化石板还是内华达山脉基岩沉没的岩石圈根部?
- 批准号:
1314910 - 财政年份:2013
- 资助金额:
$ 17.19万 - 项目类别:
Standard Grant
Imaging With a Unique 3D Seismic Dataset
使用独特的 3D 地震数据集进行成像
- 批准号:
1214912 - 财政年份:2012
- 资助金额:
$ 17.19万 - 项目类别:
Continuing Grant
Ambient Near-Coastal Seismic Noise and Temporal Monitoring
近海岸环境地震噪声和时间监测
- 批准号:
0838247 - 财政年份:2009
- 资助金额:
$ 17.19万 - 项目类别:
Standard Grant
The NARS-Baja Seismic Array: Continued Operations and Research
NARS-Baja 地震台阵:持续运行和研究
- 批准号:
0405437 - 财政年份:2004
- 资助金额:
$ 17.19万 - 项目类别:
Standard Grant
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Collaborative Research: Deep Drilling of Lake Junin, Peru: Continuous Tropical Records of Glaciation, Climate Change and Magnetic Field Variations Spanning the Late Quaternary
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