Collaborative Research: A Deeptow Magnetic Study of the Jurassic Quiet Zone

合作研究：侏罗纪安静区的 Deeptow 磁力研究

• 批准号: 0099327
• 负责人: Maurice Tivey
• 金额: $ 33.25万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-11-15 至 2004-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0099327&HistoricalAwards=false
• 关键词: Collaborative; Research; Deeptow; Magnetic; Study

The nature of the magnetic Jurassic Quiet Zone is unresolved because Jurassic ocean crust occurs in only a few locations. New results have been obtained at Ocean Drilling Project Hole 801C suggesting up to six polarity reversals or intensity events within the Jurassic. This project will conduct a nested set of near-bottom deeptow magnetic profiles encompassing the region around 801C and then expanding out to extend the existing 1992 deeptow lines south to the magnetic rough-smooth boundary which is thought to define the end of the spreading sequence in the area. The deeptowed magnetic survey will boost the signal to noise ratio, reduce the diurnal noise problem and mitigate the attenuation due to water depth.

由于侏罗纪洋壳仅出现在少数几个地方，因此侏罗纪静止带的性质尚未得到解决。 海洋钻探项目 Hole 801C 获得的新结果表明侏罗纪内发生了多达六次极性反转或强度事件。 该项目将进行一组嵌套的近底部深拖磁剖面，涵盖 801C 周围的区域，然后向外扩展，将现有的 1992 年深拖线向南延伸至磁粗糙光滑边界，该边界被认为定义了该区域扩展序列的终点。 深拖磁力勘测将提高信噪比，减少昼夜噪声问题，并减轻因水深造成的衰减。