Data Retrieval from an Acoustic Extensometer Experiment at the South Cleft RIDGE Seafloor Observatory Site

南裂脊海底观测站声学引伸计实验的数据检索

• 批准号: 0099038
• 负责人: William Chadwick
• 金额: $ 7.09万
• 依托单位: Oregon State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-05-01 至 2002-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0099038&HistoricalAwards=false
• 关键词: Data; Retrieval; Acoustic; Extensometer; Experiment

In 2000 an array of acoustic extensiometers was deployed at the south Cleft segment of the Juan de Fuca Ridge. These instruments are designed to precisely measure horizontal distances across the axis of the ridge to detect and quantify seafloor speading events. Eleven instruments were deployed in permanent seafloor benchmarks. The instruments make daily measurements of distance to their neighbors in the array by recording the round trip travel time of acoustic pulses. Temperature is measured to corect the ranges for sound speed variations, and pressure was measured at each benchmark to monitor for veritical deformation.

2000年，在胡安德富卡山脊南侧裂隙段部署了一组声学延伸仪。这些仪器旨在精确测量横跨海脊轴线的水平距离，以检测和量化海底喷溅事件。在永久性海底基准中部署了11项仪器。这些仪器通过记录声脉冲的往返旅行时间，每天测量与阵列中邻居的距离。测量温度以校正声速变化的范围，并在每个基准上测量压力以监测垂直变形。