NEOMA, Maldives December, 2007 Meteor Cruise: Carbonate Margin Miocene-Pliocene Evolution, Complimentary Site Survey for IODP-514-Full5

NEOMA，马尔代夫，2007 年 12 月 流星巡航：碳酸盐边缘中新世-上新世演化，免费进行 IODP-514-Full5 现场调查

• 批准号: 0729070
• 负责人: Andre Droxler
• 金额: --
• 依托单位: William Marsh Rice University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-01 至 2011-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0729070&HistoricalAwards=false
• 关键词: NEOMA; Maldives; December; 2007; Meteor

Because of Droxler's past and current research involvement in the Maldives, he has been invited by chief scientist Prof. Christian Betzler (University of Hamburg, Germany) to participate on a December 2007 18 days-long research cruise NEOMA on the R/V Meteor M74/4 in the Maldives Inner Sea. This sea going expedition is funded by the Deutsche Forschungsgemeinschaft (DFG Foundation). Funds are for Droxler (1) to participate at the December 2007 research cruise on the R/V Meteor, and (2) to develop a post cruise Rice research program including a graduate student. The research cruise is part of a German research program NEOMA. During the 18 days of the NEOMA sea going operations, bathymetric (swath mapping) and seismic surveys (Parasound digital echo sounder and multi-channels high resolution seismics with GI gun as acoustic sources) will be acquired and gravity and piston cores retrieved in the northern part of the Maldives Inner Sea. One of the goals of the R/V Meteor cruise is to gather additional site survey data for the IODP proposal 514-Full5 Fluctuations in the Inner Sea of the Maldives Archipelago: an Intra-Oceanic Carbonate System for which Droxler is the lead Proponent with several co-proponents from Germany/Netherlands (Betzler, C.G., Reijmer, J.J.G., Gischler, E.) who will be directly involved in the December 07 R/V Meteor cruise. The proposed 514-Full5 drilling program is developed to address unanswered, challenging, and essential questions on the timing and amplitude of the Oligocene and Neogene sea level fluctuations and complement well the results of past ODP and future IODP research programs across the New Jersey siliciclastic shelf margin, the scheduled IODP leg in the Canterbury Basin, Leg 166 across the western margin of Great Bahama Bank, and Leg 194 drilling on the Marion Plateau (Northeast Australia). Some of the data collected during the December 2007 R/V Meteor cruise will be valuable complementary site survey data to the existing industry seismic data sets, already submitted to the IODP Data Bank. In parallel to acquiring the necessary site survey data, a goal is to compile enough seismic data to test and compare the details of the Oligocene-Neogene sequence stratigraphic pattern signature. The PIs will analyze a series of cores to complement the analyses that were done at Site 716, in particular to understand the late Brunhes interglacial glacial cycles in the deep surroundings of modern atolls and, if recovered, to focus on the mid-Brunhes transition, clearly observed in several other carbonate and mixed carbonate margins such as the Bahamas, Belize, the Florida Keys, and the Gulf of Papua.Broader Impacts involve graduate and undergraduate student participation in the cruise and post-cruise research and connection to a proposed IODP expedition.

由于Droxler过去和现在在马尔代夫的研究工作，他受到首席科学家Christian Betzler教授（德国汉堡大学）的邀请，参加了2007年12月乘坐R/V Meteor M74/4在马尔代夫内海进行的为期18天的NEOMA研究巡航。这次海上探险由德国研究协会（DFG 基金会）资助。资金用于 Droxler (1) 参加 2007 年 12 月 R/V Meteor 的研究巡航，以及 (2) 开发包括研究生在内的巡航后莱斯研究项目。该研究巡航是德国 NEOMA 研究计划的一部分。在为期 18 天的 NEOMA 海上作业期间，将在马尔代夫内海北部进行测深（测绘）和地震勘测（Parasound 数字回声测深仪和以 GI 枪作为声源的多通道高分辨率地震），并取回重力和活塞芯。 R/V Meteor 巡航的目标之一是为 IODP 提案 514-Full5 马尔代夫群岛内海波动：海洋内碳酸盐系统收集额外的现场调查数据，Droxler 是该提案的主要支持者，来自德国/荷兰的几位共同支持者（Betzler, C.G.、Reijmer, J.J.G.、Gischler, E.）将是 直接参与 12 月 7 日 R/V 流星巡航。拟议的 514-Full5 钻探计划旨在解决有关渐新世和新近纪海平面波动的时间和幅度的未解答的、具有挑战性的基本问题，并很好地补充了新泽西州硅质碎屑陆架边缘的过去 ODP 和未来 IODP 研究计划的结果、坎特伯雷盆地预定的 IODP 航段、跨越大巴哈马浅滩西缘的 166 航段以及 马里恩高原（澳大利亚东北部）第 194 段钻探。 2007 年 12 月 R/V Meteor 巡航期间收集的一些数据将成为现有行业地震数据集的宝贵补充现场调查数据，这些数据集已提交给 IODP 数据库。在获取必要的现场勘察数据的同时，目标是编制足够的地震数据来测试和比较渐新世-新近纪序列地层图案特征的细节。 PI 将分析一系列岩心，以补充在 716 站点进行的分析，特别是了解现代环礁深处周围的晚 Brunhes 间冰期冰川循环，如果恢复，将重点关注在其他几个碳酸盐岩和混合碳酸盐边缘（如巴哈马、伯利兹、佛罗里达群岛和墨西哥湾）的中期 Brunhes 过渡。 巴布亚更广泛的影响包括研究生和本科生参与邮轮和邮轮后的研究以及与拟议的 IODP 探险活动的联系。