SeaMARC II and Seismic Reflection of the Taiwan Collision

SeaMARC II 和台湾碰撞的地震反射

• 批准号: 8911507
• 负责人: Neil Lundberg
• 金额: $ 8.26万
• 依托单位: Princeton University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-04-01 至 1991-07-01
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8911507&HistoricalAwards=false
• 关键词: SeaMARC; II; Seismic; Reflection; Taiwan

The accretion of island arcs onto continental margins is an important mechanism for continental growth, and explains much of the complexity of terranes surrounding the Pacific Ocean. Drs. Lundberg, Reed and Shor will survey a collision in progress immediately south of Taiwan, where an arc system ofthe Phillipine Sea is colliding with the China main land. Cruise plans include 26 days of SeaMarcII swath mapping, digitalsingle-channel seismics, 3.5 KHz echo sounding, gravity and magnetic measurements, plus 3 days of piston coring. Immediate objectives are to map deep (seismic) and shallow (topographic) structural features, sediment lithofacies and sediment transport systems across the collision zone. Because of the oblique natureof the collisional front, along-strike comparisons provide"snapshot" views of the evolution of arc-continent collisions. Consequently, studies will include spatial and temporal comparisons of the effects of over burden and sediment distribution.

岛弧在大陆边的增生是一种 大陆增长的重要机制，并解释了大部分 太平洋周围海域的复杂性Drs. 伦德伯格、里德和肖尔将调查一次正在进行的碰撞 紧接着台湾南部，菲律宾的弧形系统 海洋正在与中国大陆碰撞。邮轮计划包括 26天的SeaMarcII条带测绘，数字单通道 地震、3.5 KHz回声测深、重力和磁力 测量，加上3天的活塞取芯。近期目标 是绘制深（地震）和浅（地形）构造图 沉积物特征、沉积物岩相和沉积物输运系统 穿过碰撞区 由于倾斜的性质， 碰撞前沿，沿走向的比较提供了“快照” 弧-陆碰撞演化的观点。因此，委员会认为， 研究将包括空间和时间的比较， 超载和沉积物分布的影响。