CMG: Improved Seismic Inference via Better Spectrum Estimation
CMG:通过更好的频谱估计改进地震推断
基本信息
- 批准号:0417983
- 负责人:
- 金额:$ 25.02万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2004
- 资助国家:美国
- 起止时间:2004-09-01 至 2008-08-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
CMG RESEARCH: Improved Seismic Inference via Better SpectrumEstimationIntellectual Merits: Much of the inference in seismology, from normal--mode studies toanalysis of faulting mechanisms, depends on having reliable estimates of spectra and, possiblymore important, reliable estimates of their uncertainties. The collaborative effort betweenmathematics and geophysics in this proposal is being driven by the development and deploymentof high dynamic range broadband sensors networks in the field of seismology that require thedevelopment and implementation of sophisticated data analysis tools to create a betterunderstanding of the earthquake source and Earth structure.The spectra of the transient elastic body waves (P and S waves) provide fundamentalinformation and constraints on earthquake source properties and physics. Currently the state-of-the-art for the study of the physics of earthquakes is the estimation of source parameters, usuallyestimated from the spectra of the transient seismic waves.Spectral analysis has recently undergone a revolution with the development ofsophisticated techniques in which the data are multiplied in turn by a set of tapers that aredesigned to maximize resolution and minimize bias. In addition to minimizing the bias whilemaintaining a given resolution, the multi-taper approach allows an estimate of the statisticalsignificance of features in the power spectrum. Developing quadratic inverse theory that utilizesnot only the spectral estimators, but the time and frequency derivatives of the spectrum, togenerate a much higher resolution spectra. This project will extend this theory from a univariatetheory to generalized multivariate theory. While the applications discussed here are seismic, it isclear that there are other geophysical, scientific, and engineering applications that will benefitfrom the proposed studies. Obvious candidates are climate studies (both paleo and modern), andspace physics.Broader Impacts: Advancing discovery and understanding while promoting teaching, training,and learning. Broaden participation of underrepresented groups by participation of minoritystudents and by presenting project related web pages in English and Spanish. Broaddissemination of results will be accomplished through conference presentations, journal articles,and web presentations.
CMG研究:通过更好的谱估计改进地震推断智力优点:地震学中的许多推断,从正常模式研究到断层机制分析,都依赖于对谱的可靠估计,而且可能更重要的是,依赖于对谱的不确定性的可靠估计。在这一建议中,数学和地球物理学之间的合作努力是由地震学领域高动态范围宽带传感器网络的开发和部署所推动的,这需要开发和实施复杂的数据分析工具,以更好地了解震源和地球结构。(P波和S波)提供了关于震源性质和物理的基本信息和约束。目前,地震物理学研究的最新进展是震源参数的估计,通常根据瞬态地震波的谱进行估计。随着复杂技术的发展,谱分析最近经历了一场革命,其中数据依次乘以一组锥形,旨在最大化分辨率并最小化偏差。除了在保持给定分辨率的同时最小化偏差外,多锥度方法还允许估计功率谱中特征的显著性。发展二次逆理论,不仅利用谱估计,但时间和频率的频谱导数,以产生一个更高的分辨率谱。本项目将把这一理论从一元理论推广到广义多元理论。虽然这里讨论的应用是地震,很明显,还有其他地球物理,科学和工程应用,将受益于拟议的研究。气候研究(包括古气候和现代气候)和空间物理学是明显的候选者。更广泛的影响:在促进教学、培训和学习的同时,推进发现和理解。通过少数民族学生的参与以及用英文和西班牙文介绍与项目有关的网页,扩大代表性不足群体的参与。将通过会议报告、期刊文章和网络演示来广泛传播成果。
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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Frank Vernon其他文献
Linear system identification of the UC San Diego Geisel Library building under ambient vibration
- DOI:
10.1007/s13349-024-00889-4 - 发表时间:
2024-12-30 - 期刊:
- 影响因子:4.300
- 作者:
Lin Sun;Joel P. Conte;Michael D. Todd;Rodrigo Astroza;Yehuda Bock;Glen Offield;Frank Vernon - 通讯作者:
Frank Vernon
Tracking Seismic Velocity Perturbations at Ridgecrest Using Ballistic Correlation Functions
使用弹道相关函数跟踪里奇克莱斯特的地震速度扰动
- DOI:
- 发表时间:
2024 - 期刊:
- 影响因子:3.3
- 作者:
Y. Sheng;A. Mordret;F. Brenguier;L. Tomasetto;Q. Higueret;Coralie Aubert;Dan Hollis;Frank Vernon;Y. Ben‐Zion - 通讯作者:
Y. Ben‐Zion
Characterizing the Background Noise Level of Rotational Ground Motions on Earth
描述地球旋转地面运动的背景噪声水平
- DOI:
10.1785/0220230202 - 发表时间:
2023 - 期刊:
- 影响因子:3.3
- 作者:
A. Brotzer;H. Igel;É. Stutzmann;J. Montagner;F. Bernauer;J. Wassermann;R. Widmer;Chin;Sergey Kiselev;Frank Vernon;K. U. Schreiber - 通讯作者:
K. U. Schreiber
Frank Vernon的其他文献
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{{ truncateString('Frank Vernon', 18)}}的其他基金
Collaborative Research: EAGER--Improved Detection and Quantification of Wind Gusts
合作研究:EAGER——改进阵风的检测和量化
- 批准号:
1540410 - 财政年份:2015
- 资助金额:
$ 25.02万 - 项目类别:
Continuing Grant
EarthCube Building Blocks: Collaborative Proposal: Cloud-Hosted Real-time Data Services for the Geosciences (CHORDS)
EarthCube 构建模块:协作提案:地球科学云托管实时数据服务 (CHORDS)
- 批准号:
1440084 - 财政年份:2014
- 资助金额:
$ 25.02万 - 项目类别:
Standard Grant
RAPID - Response to the Increased Seismic Activity along the San Jacinto Fault Zone Following the 4 April 2010 Mw 7.2 El Major-Cucaph Earthquake
RAPID - 对 2010 年 4 月 4 日 Mw 7.2 El Major-Cucaph 地震后圣哈辛托断层带沿线地震活动增加的响应
- 批准号:
1057842 - 财政年份:2010
- 资助金额:
$ 25.02万 - 项目类别:
Standard Grant
MRI-R2: Acquisition of a Semi-Continental Scale Atmospheric Acoustic Transportable Array
MRI-R2:获取半大陆规模大气声学可移动阵列
- 批准号:
0960275 - 财政年份:2010
- 资助金额:
$ 25.02万 - 项目类别:
Standard Grant
Collaborative Research: Structural Architecture and Evolutionary Plate-Boundary Processes along the San Jacinto Fault Zone
合作研究:圣哈辛托断裂带沿线的结构体系和演化板块边界过程
- 批准号:
0908042 - 财政年份:2009
- 资助金额:
$ 25.02万 - 项目类别:
Continuing Grant
Collaborative Research: Crust-Mantle Interactions at an Oblique Arc-Continent Collision Zone: The SE Caribbean Plate Boundary
合作研究:斜弧大陆碰撞带的壳幔相互作用:东南加勒比板块边界
- 批准号:
0607685 - 财政年份:2006
- 资助金额:
$ 25.02万 - 项目类别:
Standard Grant
Collaborative Research: Design and Construction of a Second-Generation Buriable Broadband Ocean Bottom Seismograph and Burial System
合作研究:第二代埋地宽带海底地震仪和埋藏系统的设计与建造
- 批准号:
0099234 - 财政年份:2001
- 资助金额:
$ 25.02万 - 项目类别:
Continuing Grant
Collaborative Research: Crust-Mantle Interactions During Continental Growth & High-Pressure Rock Exhumationat an Oblique Arc-Continent Collision Zone: The SE Caribbean Margin
合作研究:大陆生长过程中的壳幔相互作用
- 批准号:
0003544 - 财政年份:2001
- 资助金额:
$ 25.02万 - 项目类别:
Continuing Grant
Collaborative Research: Analysis of Broadband Seismic Measurements from the Ocean Seismic Network Pilot Experiment
合作研究:海洋地震台网先导实验宽带地震测量分析
- 批准号:
9819615 - 财政年份:1999
- 资助金额:
$ 25.02万 - 项目类别:
Standard Grant
Collaborative Research: Geodynamics of Intracontinental Mountain Building in the Tien Shan, Central Asia
合作研究:中亚天山陆内造山的地球动力学
- 批准号:
9614282 - 财政年份:1999
- 资助金额:
$ 25.02万 - 项目类别:
Continuing Grant
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