Break-Away Corer and Real-Time Video: Construction and Field Testing

分离取芯器和实时视频：施工和现场测试

• 批准号: 9819183
• 负责人: Patricia Fryer
• 金额: $ 6万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-02-01 至 2001-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9819183&HistoricalAwards=false
• 关键词: Break; Away; Corer; Real; Time

Fryer, Patricia/ Univ. of Hawaii 98-19183Abstract: The PI's propose to develop a new type of sediment coring system with two important improvements: 1) it will allow researchers to obtain real-time video of the bottom in order to precisely position a gravity corer, and 2) it will leave a core barrel in place at the site of the core that subsequently could be instrumented for longer term monitoring efforts.The video system will be used to ensure proper emplacement of the corer, particularly if the target area is "less than a meter in width". The PI's hope to use this system in areas that have been extensively mapped prior to deployment of the coring system. The corer would then be able to obtain sediment from pre-selected sites of interest to the scientists and/or where long-term in-situ observations are important. The new system, called a "break-away corer", will be constructed so that the outer metal core barrel will break away from the weight stand. The empty core barrel will be left behind in the sediment when the weight stand and core liner with core samples is retrieved. With the empty core barrel effectively casing the core hole, scientists could subsequently use a submersible or an ROV to instrument and seal the core hole, creating an in-situ observatory similar to the CORK systems used in ODP holes.

摘要：PI提议开发一种新型沉积物取心系统，该系统有两个重要改进：1)它将使研究人员能够获得底部的实时视频，以便精确定位重力覆盖层；2)它将在岩心位置留下一个岩心桶，随后可以通过仪器进行长期监测。视频系统将用于确保掩体的正确放置，特别是如果目标区域“宽度小于一米”。PI希望在部署取心系统之前已经广泛测绘的区域使用该系统。然后，覆盖物将能够从预先选定的科学家感兴趣的地点和/或长期原位观测很重要的地点获得沉积物。这种被称为“分离盖”的新系统将被构造成使外部金属芯筒从重量支架上分离出来。当取重架和带岩心样品的岩心衬垫时，空岩心桶将留在沉积物中。随着空岩心桶有效地包裹在岩心孔中，科学家们随后可以使用潜水器或ROV来测量和密封岩心孔，创建一个类似于ODP井中使用的CORK系统的现场观测站。