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Hydrography and geomorphology of Antananarivo High City (Madagascar)

Author

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  • William Frodella
  • Daniele Spizzichino
  • Andrea Ciampalini
  • Claudio Margottini
  • Nicola Casagli

Abstract

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.

Suggested Citation

  • William Frodella & Daniele Spizzichino & Andrea Ciampalini & Claudio Margottini & Nicola Casagli, 2021. "Hydrography and geomorphology of Antananarivo High City (Madagascar)," Journal of Maps, Taylor & Francis Journals, vol. 17(4), pages 215-226, July.
    • Handle: RePEc:taf:tjomxx:v:17:y:2021:i:4:p:215-226
    DOI: 10.1080/17445647.2020.1721343
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    Cited by:

    1. Quynh Duy Bui & Hang Ha & Dong Thanh Khuc & Dinh Quoc Nguyen & Jason von Meding & Lam Phuong Nguyen & Chinh Luu, 2023. "Landslide susceptibility prediction mapping with advanced ensemble models: Son La province, Vietnam," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 116(2), pages 2283-2309, March.

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