SeaMARC II and Seismic Reflection of the Taiwan Collision

岛弧在大陆边缘的吸积是大陆增长的重要机制，解释了太平洋周围地体的复杂性。伦德伯格、里德和肖尔博士将勘察台湾南部正在进行的一次碰撞，菲律宾海的弧系正在与中国大陆相撞。邮轮计划包括26天的SeaMarcII条带测绘、数字单通道地震、3.5 kHz回波探测、重磁测量，以及3天的活塞取心。近期目标是绘制碰撞带的深部(地震)和浅部(地形)构造特征、沉积物岩相和沉积物输送系统图。由于碰撞前沿的倾斜性质，沿走向的比较提供了弧陆碰撞演化的“快照”观点。因此，研究将包括对超载和泥沙分布的影响进行空间和时间比较。

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.