Extensão de água detectada por satélite nos Distritos de Mossuril e Ilha de Moçambique, Província de Nampula, Moçambique, no dia 18 de janeiro de 2025

✦ DISCOVERED BY ORIONAIUnited Nations Satellite Centre (UNOSAT)PopulationMozambique
Mozambique

About this dataset

**UNOSAT code: FL20250121MOZ** Este mapa ilustra a água detectada por satélite nos Distritos de Mossuril e Ilha de Moçambique, Província de Nampula, usando imagens satélite tirada no dia 18 de janeiro de 2025 às 09:34, horário local. Dentro da área analisada de aproximadamente 4.600 km², estima-se que 60 km² de terra tenham sido afetados pelas águas das enchentes. Com base nos dados demográficos espaciais do WorldPop, aproximadamente 9.000 pessoas estão expostas ou morando perto das áreas inundadas. Essa é uma análise preliminar e ainda não foi validada em campo. Envie comentários sobre o solo para o Centro de Satélites das Nações Unidas (UNOSAT).

Documentation

UNOSAT datasets and maps are produced using a variety of methods. In general, analysts closely review satellite imagery, often comparing two or more images together, and determine notable changes between the images. For damage assessments, refugee or IDP assessments, and similar analyses, these changes are then manually documented in the vector data by the analyst. For flood extractions, landcover mapping and similar analyses, a variety of automated remote sensing techniques are used to extract the relevant information which is then reviewed and revised as necessary by the analyst. In all cases, resulting data is then loaded into a standardized UNOSAT geodatabase and exported asshapefiles for dissemination. This is a preliminary assessment and has not yet been validated in the field. It is important to consider the characteristics of the source imagery used in the analyses when interpreting results. For damage assessments it should be noted that only significant damage to the structural integrity of the buildings analyzed can be seen in imagery, while minor damage such as cracks or holes may not be visible at all. For flood extractions using radar data it is important to note that urban areas and highly vegetated areas may mask the flood signature and result in underestimation of flood waters. Users with specific questions or concerns should contact unosat@unitar.org to seek clarification.

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