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

合作研究：侏罗纪安静区的 Deeptow 磁力勘测

• 批准号: 0099161
• 负责人: William Sager
• 金额: $ 15.35万
• 依托单位: Texas A&M Research Foundation
• 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 2005-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0099161&HistoricalAwards=false
• 关键词: Collaborative; Research; Deeptow; Magnetic; Survey

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.

磁性侏罗纪平静带的性质尚未得到解决，因为侏罗纪海洋地壳只出现在少数几个地方。 大洋钻探项目801 C孔获得的新结果表明，侏罗纪期间发生了多达6次极性反转或强度事件。 该项目将进行一套嵌套的近海底深拖磁性剖面测量，包括801 C附近的区域，然后向外扩展，将现有的1992年深拖线向南延伸到磁性粗糙-光滑边界，该边界被认为是该地区扩张序列的终点。 深拖磁测将提高信噪比，减少昼夜噪声问题，并减轻水深引起的衰减。