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Historical coastal maps: importance and challenges in their use in studying coastal geomorphology
Journal of Coastal Conservation ( IF 2.1 ) Pub Date : 2020-03-30 , DOI: 10.1007/s11852-020-00739-7
Ekta Gupta , M. B. Rajani

Historical maritime maps such as navigation charts, bird’s-eye view maps and plan maps preserve useful coastal information of the time. Through the archival survey of such documents, a large number of charts and maps (particularly of large and medium scale) have been found that were published from sixteenth-century CE onwards. These maps– depict manmade structures such as forts and other buildings visible to sailors approaching the coast; and mark geomorphic features such as spit, bar, shoal, delta; with appropriate shape, relative position and size. Understanding the geomorphic features present in these maps and analyzing them using remote sensing imagery, historical text and recent studies can immensely enhance knowledge of coastal geomorphic changes in the interim period. However, there are challenges in analyzing these maps, such as scale variability within or across the maps, date of publication versus survey, originality of map content (copied versus original), the importance of the place to the cartographer, the purpose of making the map, cartographic skills, style and methods, etc. The present study discusses the untapped potential of historical maritime maps and charts to understand coastal geomorphology along with the challenges one can confront while studying them and suggests ways to overcome them.

中文翻译:

历史沿海地图:在研究沿海地貌中的重要性和挑战

历史海图,例如导航图,鸟瞰图和平面图,保留了当时有用的沿海信息。通过对此类文档的档案调查,发现了从公元16世纪开始出版的大量图表(特别是大中型)。这些地图-描绘了人工结构,例如堡垒和其他建筑物,这些材料对接近海岸的水手可见;并标记地貌特征,例如吐水,水坝,浅滩,三角洲;具有适当的形状,相对位置和大小了解这些地图中存在的地貌特征,并使用遥感影像,历史文字和最新研究进行分析,可以极大地增进过渡时期沿海地貌变化的知识。但是,在分析这些地图时会遇到挑战,例如,地图内部或地图之间的比例变化,出版日期与调查日期,地图内容的独创性(复制与原始),地点对制图师的重要性,制作地图的目的地图,制图技巧,样式和方法等。本研究讨论了历史海图和海图的未开发潜力,以了解沿海地貌以及人们在研究时可能面临的挑战,并提出克服这些挑战的方法。
更新日期:2020-03-30
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