Energy Coupling and Wave Propagation Phenomena: Electromagnetic Emissions in Soils and Rocks

能量耦合和波传播现象：土壤和岩石中的电磁发射

• 批准号: 9616902
• 负责人: JC Santamarina
• 金额: $ 5.86万
• 依托单位: Georgia Tech Research Corporation
• 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
• 起止时间: 1996-09-15 至 1998-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9616902&HistoricalAwards=false
• 关键词: Energy; Coupling; Wave; Propagation; Phenomena

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. ***

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出电磁辐射的证据。 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。 ***