The global fracture zone and magnetic lineation data base project

智力优势：板块运动学模型源自对共轭磁性等时线截齿和断裂带(FZ)的详细识别。这些数据构成了所有相关海相板块构造重建的基础，也加深了我们对S中生代以来地球表面演化的认识。此外，FZ道在许多其他海洋地球物理调查中也有广泛的用途，例如研究转换断层偏移量的起源、确定海山和隔离断裂带省份内的深海丘陵粗糙度、检验相互竞争的岩石圈热力模型的预测，等等。运动学模型还需要时间信息，而这一维度是通过从沿着船道收集的总场磁异常中识别关键的磁等时线边界来提供的。联合FZ和等时线拾取数据构成了海洋相对板块运动模型的基本约束。目前的研究是一个为期两年的试点项目，旨在为FZ和磁性等时线数据的用户建立新的基础设施：*将开发一个开源的、社区驱动的数据库，其中将收集关于FZ和磁性等时线的一致和有良好记录的信息，并可从一个专门的网站获取，该网站的设计和操作方式类似于维基百科。*对于断裂带，将存储关于每个FZ及其踪迹沿线的几个关键位置的大部分元数据。半自动FZ跟踪器将在所提供的元数据的指导下，从最新的数据网格中得出最佳航迹，并跨越船舶航迹轮廓。*对于磁性等时线钻头，将采用报告这一信息的通用方式，并将收集已经公布的钻头，以启动数据库。将协调进一步的补充工作，使全球数据库能够成为板块构造界不断发展的资源。受信任的专家用户将被允许添加或修改数据库中的信息，所有存储的信息都将受到版本控制，从而允许重建数据库的历史。将开发软件，协助输入新的FZ和磁异常拾取数据，并以流行的文件格式提供搜索和提取数据的选项。拟议活动的更广泛影响：板块构造重建构成了许多地质研究的基础。这一框架可能带来的改进将在地球科学的广泛领域中感受到。此外，全球自洽的FZ踪迹的可获得性将影响海洋研究的许多领域。需要详细了解FZ对齐的科学家可以通过指定平滑标准来提取痕迹。与大多数基础设施项目一样，这自然会产生广泛的影响。几名研究生和本科生将参与这一项目，并学习与海洋地球物理研究和数据分析有关的宝贵技能。公众将通过项目网站获得这项工作的成果。在这里，将提供供公众消费的材料(图像、动画等)。

Intellectual Merit: Plate kinematic models derive from the detailed identifications of conjugate magnetic isochron picks and fracture zones (FZ). These data form the foundation of all relative marine plate tectonic reconstructions and codify our understanding of Earth?s surface evolution since the Mesozoic. Furthermore, FZ traces have extensive uses in many other marine geophysical investigations such as studying the origins of transform fault offsets, identifying seamounts and isolating abyssal hill roughness within fracture zone provinces, examining predictions from competing thermal models of the lithosphere, and much more. Kinematic models also require temporal information and this dimension is provided by identification of key magnetic isochron boundaries from total field magnetic anomalies collected along ship tracks. The joint FZ and isochron pick data constitute the fundamental constraints on marine relative plate motion models. The present research is a two-year pilot project to establish new infrastructure for users of FZ and magnetic isochron data: * An open source, community-driven database will be developed where consistent and well-documented information on FZ and magnetic isochrons will be collected, accessible from a dedicated website designed and operated in a manner similar to Wikipedia. * For fracture zones, mostly meta-data about each FZ and a few key locations along its trace will be stored. A semi-automatic FZ tracker will derive the optimal traces from the most recent data grids, guided by the supplied metadata and crossing ship-track profiles. * For magnetic isochron picks, a common way of reporting this information will be imposed and already published picks will be collected for the initiation of the database. Further additions will be coordinated so that the global database can serve as an evolving resource for the plate tectonic community. Trusted expert users will be allowed to add or revise information in the database, and all information stored will be under version control, allowing the history of the database to be reconstructed. Software will developed to assist in the entry of new FZ and magnetic anomaly pick data as well as provide options for search and extraction of data in popular file formats. Broader impacts of the proposed activity: Plate tectonic reconstructions form the basis for much geologic research. The improvements that this framework will make possible will be felt over a wide cross section of the Earth sciences. In addition, the availability of global, self-consistent FZ traces will impact numerous lines of marine research. Scientists requiring detailed knowledge of FZ alignments may extract traces by specifying a smoothness criterion. As most infrastructure projects, this will by its nature have wide impact. Several graduate and undergraduate students will be involved in this project and learn valuable skills pertaining to marine geophysical research and data analysis. The public will obtain access to the results of this work via the project web site. Here, material for public consumption (images, animations, etc) will be made available.