Creep Processes of Continental Slope and Rise Sediments

大陆坡的蠕变过程和上升沉积物

• 批准号: 9101657
• 负责人: Armand Silva
• 金额: $ 33.06万
• 依托单位: University of Rhode Island
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-02-15 至 1996-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9101657&HistoricalAwards=false
• 关键词: Creep; Processes; Continental; Slope; Rise

The overall objective of the research is to understand the mechanisms of creep and be able to predict the magnitudes and rates of displacements of submarine slopes. The previous 3-year program provides the geological basis, extensive experimental data base, and foundation of a finite element code for studying creep processes of slopes. The laboratory testing will focus on further development of analytical creep constitutive relationships for sediments found on the continental slope and rise. The finite element code will be expanded and improved to incorporate a wider range of material behavior and applied to more complex slope configurations. In the laboratory physical model portion of the program, in which actual experiments are just beginning, the apparatus will be improved to provide additional monitoring capabilities and more precise measurements. The research is scientifically relevant in terms of understanding a broad range of slope processes and has important implications to the sitting of offshore installations on slopes.

研究的总体目标是了解蠕变的机制，并能够预测海底斜坡的位移大小和速率。前一个为期3年的计划为研究斜坡的蠕变过程提供了地质基础、广泛的实验数据库和有限元程序的基础。实验室测试将侧重于进一步发展大陆斜坡和隆起上发现的沉积物的分析蠕变本构关系。有限元程序将进行扩展和改进，以纳入更广泛的材料特性，并应用于更复杂的边坡配置。在该计划的实验室物理模型部分，实际实验才刚刚开始，仪器将得到改进，以提供额外的监测能力和更精确的测量。这项研究在理解广泛的斜坡过程方面具有科学意义，并对斜坡上海上设施的选址具有重要影响。