Hydrologic and Geochemical Measurements During the Marnaut Project, Marmara Sea, Turkey

土耳其马尔马拉海 Marnaut 项目期间的水文和地球化学测量

• 批准号: 0647361
• 负责人: Michael Tryon
• 金额: --
• 依托单位: University of California-San Diego Scripps Inst of Oceanography
• 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: 2007-04-01 至 2010-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0647361&HistoricalAwards=false
• 关键词: Hydrologic; Geochemical; Measurements; During; Marnaut

Intellectual Merit: This research examines the hypotheses that hydrologic events at deep ocean seeps can be directly related to tectonic events and that active faults are a hydrologic connection between the seafloor and zone of earthquake generation. To do this, time series measurements are being taken of fluid expulsion associated with the Main Marmara Fault, the submerged western extension of the North Anatolian Fault Zone which is a major active fault off the coast of Turkey. A unique sampling device that can sample fluids up to a year in duration will be placed along the trace of the fault on the seafloor; and a time series record of fluid flow rates and fluid chemistry will be collected. Dissolved gases (He and CO2) in the fluids will be analyzed for their isotopic signature. The overall chemistry of the fluids will also be evaluated. Resulting data will be interpreted within the larger framework of complementary water column, pore pressure, geophysical, additional geochemical, and GPS datasets being collected at no additional cost by members of the international US, French, and Turkish research team working on the Marmara Sea project (MARNAUT). Research objectives are to understand how fluid expulsion intensity and source depth correlate with tectonic context, sedimentation history, and earthquake timing. Broader Impacts: The broader impacts of the work include collaboration with French and Turkish scientists and other international partners. It will also support an early career scientist and promote further development and testing of a unique set of fluid monitoring devices and establish their potential for real time monitoring seismic events and possible use in earthquake prediction. The work also has broader societal significance because the fault to be monitored has a history of major and periodic earthquake activity that causes significant loss of property and lives in high density population centers in Istanbul and surrounding regions.

智力优势：本研究探讨的假设，水文事件在深海渗漏可以直接相关的构造事件和活动断层之间的海底和地震生成区的水文连接。为此，正在对与马尔马拉主断层有关的流体排出进行时间序列测量，主断层是土耳其海岸外的一个主要活动断层，即北安纳托利亚断层带的水下西延部分。 将沿海底断层的痕迹沿着放置一个独特的取样装置，可对流体进行长达一年的取样;并将收集流体流速和流体化学性质的时间序列记录。 将分析流体中的溶解气体（He和CO2）的同位素特征。 还将评价液体的总体化学性质。 由此产生的数据将在更大的框架内进行解释，补充水柱，孔隙压力，地球物理，额外的地球化学和GPS数据集正在收集的国际美国，法国和土耳其的研究小组成员在马尔马拉海项目（MARNAUT）没有额外的费用。 研究目的是了解流体排出强度和震源深度与构造背景、沉积历史和地震时间的关系。 更广泛的影响：这项工作的更广泛影响包括与法国和土耳其科学家以及其他国际合作伙伴的合作。 它还将支持一名早期职业科学家，促进进一步开发和测试一套独特的流体监测装置，并确定其用于真实的实时监测地震事件的潜力和可能用于地震预测的潜力。 这项工作还具有更广泛的社会意义，因为要监测的断层具有重大和周期性地震活动的历史，在伊斯坦布尔和周边地区的高密度人口中心造成重大财产和生命损失。