Collaborative Research: Analysis of the Lomonosov Ridge to Characterize Ancient Plate Boundaries in the Arctic: An Integrated Geophysical Study of Utilizing SCAMP

这是一项与杜兰大学、夏威夷大学夏威夷测绘与研究小组(HMRG)和拉蒙特-多尔蒂地球天文台(LDEO)合作的提案。1996年，国家科学基金会资助科学家和工程师为SCICEX任务设计、制造和建造一套独特的仪器。海底特征和测绘吊舱(SCAMP)包括一个北极优化的SeaMARC型侧扫条带测深声纳(SSBS)、一个扫频或“线性调频”高分辨率海底剖面仪(HRSP)、一个贝尔BGM-3重力仪以及数据采集和质量控制系统(DAQCS)。首席调查员将安装SCAMP，在1999年SCICEX邮轮期间操作正在进行的地球物理仪器，在邮轮结束后将仪器从美国鹰嘴号上移除，并减少在邮轮期间收集的数据。数据的减少将由HMRG的首席调查员完成。该提案的科学部分是对洛蒙诺索夫山脊的结构及其与亚亚和欧亚盆地之间关系的地球物理研究。据推测，洛蒙诺索夫山脊是一个大陆地壳结构，是欧亚和亚欧大陆盆地的大陆边缘。首席调查员将分析在SCICEX99期间收集的数据，以确定裂谷过程中形成的构造、大洋-大陆边界的性质以及沿Lomonosov海脊走向的构造过程的变化。

This is a collaborative proposal with the Tulane University, University of Hawaii's Hawaii Mapping and Research Group (HMRG) and Lamont-Doherty Earth Observatory (LDEO). In 1996, the National Science Foundation funded scientists and engineers LDEO to design, fabricate, and construct a unique set of instruments for SCICEX missions. The Seafloor Characterization and Mapping Pod (SCAMP) includes an Arctic optimized SeaMARC-type, Sidescan Swath Bathymetric Sonar (SSBS), a swept frequency or "chirp" High Resolution Subbottom Profiler (HRSP), a Bell BGM-3 gravimeter, and Data Acquisition And Quality Control System (DAQCS). The Principal Investigators will install SCAMP, operate the underway geophysical instrumentation during the 1999 SCICEX cruise, remove the instrumentation from the USS Hawkbill after the cruise and reduce the data collected during the cruise. Reduction of the data will be done by the Principal Investigator from HMRG. The scientific part of the proposal is a geophysical study of the structure of the Lomonosov Ridge and the relationship between it and the Amerasian and Eurasian Basins. It is speculated that the Lomonosov Ridge is a continental crustal structure and that it is the continental margin for both the Amerasian and Eurasian Basins. The Principal Investigators will analyze the data collected during SCICEX99 to determine the structures developed during rifting, the nature of the ocean-continent boundary and variations in tectonic processes along the strike of the Lomonosov Ridge.