Thermal Structure of the Cascadia Subduction Zone, Grays Canyon Discovery Corridor, Washington

华盛顿州格雷斯峡谷探索走廊卡斯卡迪亚俯冲带的热结构

• 批准号: 1249552
• 负责人: Robert Harris
• 金额: $ 3.92万
• 依托单位: Oregon State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-03-15 至 2015-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1249552&HistoricalAwards=false
• 关键词: Thermal; Structure; Cascadia; Subduction; Zone

Heatflow measurements using a 3.5 m probe will be added to a scheduled experiment "Thermal structure of the cascadia subduction zone on the WA margin (PIs Johnson & Solomon, OCE-1144164). The probe temperature and thermal conductivity measurements will enhance the ~1 m depth heatflow determinations the main experiment will obtain. Improved assessment of possible bottom water temperature variation will be documented by deviations from linearity in the uppermost thermal gradient measured by the probe. One day of shiptime to conduct heat probe work is confirmed, a second day is requested if ship schedule allows. Postcruise numerical modeling of these data aims to constrain temperature structure extending down to the subducting plate interface, which is related to deep seismicity patterns.

使用3.5米探头的热流测量将添加到计划中的实验“西澳大利亚缘cascadia俯冲带的热结构”（PIs Johnson & Solomon, OCE-1144164）。探头温度和热导率的测量将增强主实验将获得的~1 m深度热流测定。对可能的底水温变化的改进评估将通过探头测量的最上层热梯度的线性偏差来记录。确认一天船期进行热探测工作，如果船期允许，要求第二天。这些数据的巡航后数值模拟旨在限制向下延伸到俯冲板块界面的温度结构，这与深部地震活动模式有关。