大洋海底数据可视化和成图设计与分析

随着全球大洋调查的不断开展以及各种海底探测技术的进步,海洋调查数据积累日益增多。以往主要通过使用不同的专业软件来进行各类大洋数据的可视化和成图分析。在海洋调查方面目前迫切需要一种可视化软件,能够快速显示海底大洋的观测和探测数据,并能够快速简单地综合分析和成图。为了解决快速可视化和多种类型数据同界面显示问题,本文利用Matlab中的图形用户界面工具,开发和设计了简单易操作的OceanVis1.0数据可视化和图形用户界面。通过使用OceanVis1.0,用户可以方便地对全球海底大洋多波束水深、海洋重力异常、海洋磁异常、地震波形数据等进行可视化和成图分析,能够解决大洋关键区域的多种数据可视化综合分析问题。对不同类型的数据可以进行二维测线和三维空间数据变化的显示,也可以实现数据成图的放大、缩小和旋转功能。对于多波束、重磁数据空间变化数据,可以进行二维测线的任意切割和成图输出,不用保留中间成图即可满足用户的实时数据显示和快速查看功能。OceanVis1.0也能为具体航次的海底调查提供各类海底探测数据的快速显示,以及包括航次中获取的数据显示和初步分析功能,能够为研究区航次测线的规划提供数据可视化和图形支撑平台。

Seafloor visualization and graphic user interface design

Marine survey data increase steadily with the continuous progress in global marine surveying and the development of marine exploration techniques. So far various specialized softwares have been used to display/plot all types of marine survey data for visualization. However, it is necessary to create a data visualization tool for quick data display and analysis for today's global ocean observation and seafloor exploration. Here, for visualization and simultaneous display of multi-type data, we design and develop (using Matlab) a simple, easy-to-use data visualization and graphic user interface called OceanVis1.0. Using OceanVis1.0, all types of marine survey data—global bathymetric data, marine gravity anomaly data, marine magnetic anomaly data, earthquake waveform data, etc.—can be easily visualized for mapping analysis, and comprehensive visual analysis of key oceanic areas can be achieved. In OceanVis1.0, multi-type survey data can be displayed using 2D lines and 3D space variations, and visual manipulation such as zoom and rotation is also easy to do. For multi-beam, marine gravity and magnetic anomaly data, free cutting 2D lines and graphic output without saving intermediate graphics provide real-time visualization and a quick display. Meanwhile, OceanVis1.0 allows quick display and analysis of marine exploration data obtained from survey voyages, thus can be used in designing ship surveying lines for a specific research area.