Energy Coupling and Wave Propagation Phenomena: Electromagnetic Emissions in Soils and Rocks
Energy Coupling and Wave Propagation Phenomena: Electromagnetic Emissions in Soils and Rocks
批准号:
9616902
负责人:
JC Santamarina
金额:
$5.86万
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
1996
资助国家:
美国
项目状态:
已结题
起止时间:
1996-09-15 至 1998-02-28
中文摘要
小行星9616902 波发射是能量以瞬态波的形式突然释放。 电磁波和机械波提供了关于源机制和介质固有的材料特性的不同和互补的信息。 电磁波的发射由能量守恒原理、勒夏特列原理和能量耦合现象支持。 对完整岩石样本进行的初步测试显示了电磁发射的证据。 这个探索性研究的小补助金探索了选定的岩石和土壤中能量耦合和电磁辐射的意义。 将选择实验材料来隔离或突出特定的排放要求。 结果将在假设的排放机制的背景下进行解释,实现能量平衡。 重点将放在耦合机制,证明在无线电频率的发射,使波有显着的穿透深度,通过地质材料,以允许远程检测(包括压电,电荷分离,和双层极化。 补充研究任务包括监测系统的增强和校准,以及岩石中纯破坏模式的特征描述。 ***
英文摘要
9616902 Santamarina Wave emission is the sudden release of energy in the form of transient waves. Electromagnetic and mechanical waves provide different and complimentary information about source mechanisms and material properties inherent to the medium. The emission of electromagnetic waves is supported by the principle of energy conservation, Le Chatelier's principle, and energy coupling phenomena. Preliminary tests conducted on intact rock specimens showed evidence of electromagnetic emissions. This Small Grant for Exploratory Research explores the significance of energy coupling and electromagnetic emissions in selected rocks and soils. Experimental materials will be selected to isolate or highlight specific emission requirements. Results will be interpreted within the context of hypothesized emission mechanisms, fulfilling energy balance. Emphasis will be placed on coupling mechanisms that justify emissions in the radio-frequencies so that waves have significant penetration depth through geomaterials to allow for remote detection (including piezoelectricity, charge separation, and double layer polarization. Complementary research tasks include the enhancement and calibration of the monitoring system, and the characterization of signatures from pure failure modes in rock. ***
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Researach Initiation Award: Elm Waves in Environmental Geotechnology: Fundamental Study and Applications
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财政年份:1992
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Researach Initiation Award: Elm Waves in Environmental Geotechnology: Fundamental Study and Applications
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批准号:
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依托单位: