SeaMarc II, Seismic, and Coring Study of the Western SolomonSea

SeaMarc II，西所罗门海的地震和取心研究

• 批准号: 8917351
• 负责人: Eli Silver
• 金额: $ 26.37万
• 依托单位: University of California-Santa Cruz
• 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: 1990-06-01 至 1994-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8917351&HistoricalAwards=false
• 关键词: SeaMarc; II; Seismic; Coring; Study

The Solomon Sea is a small ocean basin 1000 km north of the Great Barrier Reef of northeast Australia that is gradually disappearing as the Papuan Peninsula of eastern New Guinea collides with the New Britain island arc. This oblique collision has been completed along its western extremity and has resulted in the fold and trust belt on the island of New Guinea. Drs. Silver and Reed will to conduct a 32-day survey of the Solomon Sea to study the structural and sedimentologic processes involved in this collision process, the features of which are a contemporary analog to the Laramide orogeny that formed the eastern Rocky Mountains. 23 days of seafloor imaging will be conducted with SeaMarcII; these data will be supplemented by simultaneous collection of single channel airgun profiles, 3.5 KHz echosounding records, magnetics and gravity. 7 days will be devoted to collecting piston cores, and during 2 additional days, bottom photographs will be collected. Participants from the Geological Survey of Papua New Guinea and the Australian National University will join the cruise and conduct subsequent analyses. The entire data set will make possible the comparison to structures and sedimentation observed onshore in the fold and thrust belt of New Guinea, and provide better understanding of orogenic processes.

所罗门海是澳大利亚东北部大堡礁以北1000公里处的一个小洋盆，随着新几内亚东部巴布亚半岛与新不列颠岛弧的碰撞而逐渐消失。 这种倾斜碰撞已经沿着其西端完成，并在新几内亚岛上形成了褶皱和信任带。 博士。 Silver和Reed将对所罗门海进行为期32天的调查，以研究这一碰撞过程所涉及的结构和沉积过程，其特征类似于形成东部落基山脉的拉拉米德造山运动。 将使用 SeaMarcII 进行 23 天的海底成像；这些数据将通过同时收集单通道气枪剖面、3.5 KHz 回声探测记录、磁力和重力来补充。 将用 7 天专门收集活塞芯，另外 2 天将收集底部照片。 来自巴布亚新几内亚地质调查局和澳大利亚国立大学的参与者将参加巡航并进行后续分析。 整个数据集将能够与新几内亚褶皱冲断带陆上观测到的结构和沉积进行比较，并更好地了解造山过程。