文章基本信息

标题：Hydrography and geomorphology of Antananarivo High City (Madagascar)
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作者：William Frodella ; Daniele Spizzichino ; Andrea Ciampalini 等
期刊名称：Journal of Maps
印刷版ISSN：1744-5647
出版年度：2021
卷号：17
期号：4
页码：215-226
DOI：10.1080/17445647.2020.1721343
语种：English
出版社：Journal of Maps
摘要：The city of Antananarivo is located in the central highlands of Madagascar, and is the largest urban center of the island. Considering the frequent heavy cyclonic rains frequently affecting the area, its geomorphological context is particularly prone to geo-hydrological hazards, such as landslides and flash floods, as recently proved during the disastrous events of the winters of 2015 and 2018. Field data and high-resolution remote sensing data interpretation (DEMs and satellite orthophotos) were combined in order to produce detailed hydrographic and geomorphological maps. The aim was to understand the processes acting in the Analamanga hill area, with special regards to the effect of human activity in modeling the natural landforms and exacerbating the geo-hydrological hazards. The obtained maps will provide management-planning tools to be used as a first step towards a risk reduction strategy in the Antananarivo historical urban center.
关键词：Geomorphological mapping ;GIS ;remote sensing ;cultural heritage ;landslides