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Book (stand-alone)A rapid geospatial analysis of the impact of Tropical Storm Ana in Madagascar, Malawi, Mozambique, Zambia and Zimbabwe 2022
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No results found.A low pressure system formed in the Indian ocean crossed over Madagascar on 22 January 2022 and made landfall on 24 January in Mozambique, causing damage to lives and livelihood. Over the coming days, heavy rains and strong winds caused population displacements, flooding, and damages to public and private infrastructures especially in other south African countries, including Mozambique, Zimbabwe, Zambia, Madagascar, and Malawi. -
Book (stand-alone)A rapid geospatial analysis of the impact of the Hunga Tonga volcano eruption 2022
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No results found.On the 15th January 2022 the underwater Hunga Tonga–Hunga Haʻapai volcano, located in the north of Tongatapu (the main island of Tonga), erupted following several minor eruptions over the previous weeks. It was reported as the largest recorded eruption in the past 30 years. On 14 January 2022, the Tonga Geological Services issued an alert of the Hunga Tonga Hunga Ha’apai volcanic activity and a tsunami marine warning. The powerful eruption subsequently resulted in a tsunami in Tonga and the surrounding region, with effects reaching countries including Fiji, America Samoa and as far as Chile and Peru. With around 86 percent of Tongans engaged in agriculture, the impacts of the eruption and tsunami may have impacted all agriculture sectors, including fisheries, crops and livestock. The volcanic plume reached 30 km into the atmosphere, releasing volcanic gases and aerosols that were subsequently carried over neighbouring countries, potentially impacting public health and the environment. The Government of Tonga declared a state of emergency on 16 January 2022. -
Brochure, flyer, fact-sheetA rapid geospatial analysis of the flood impacts on crops in Eastern Cape province of South Africa in 2022 2023
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No results found.An analysis to assess the impacts of floods on cropland in KwaZulu-Natal province was performed using existing data, GIS and remote sensing. The crop mask was derived from the South African National Land Cover map (SANLC, 2018). The water mask was derived from the Joint Research Centre (JRC) water body data (2020). Sentinel 1 SAR was used to assess flood extent.
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