Remote Sensing Applications: Society and Environment | VOL. 15
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Flooded-area satellite monitoring within a Ramsar wetland Nature Reserve in Argentina

Publication Date Aug 1, 2019

Abstract

Abstract The protection and restoration of water-related ecosystems is one of the goals to be achieved by the United Nations’ 2030 Agenda for Sustainable Development. In this framework and requested by government Argentine institutions concerned with water, biodiversity and territorial management, this study analyzes the evolution of the flooded area within the Dulce River wetlands and Mar Chiquita Lake Nature Reserve (centered around 30.6°S, 62.6°W, 70 m above sea level) in Argentina since 2003, when the historical maximum extent was reached, until 2017. The Modified Normalized Difference Water Index (MNDWI) was calculated on atmospherically corrected NASA Landsat 5 Thematic Mapper (L5-TM) and Landsat 8 Operational Land Imager (L8-OLI) reflectance data over two-scene cloudless-sky mosaics to cover the whole Reserve. Mixed-water pixels constituted an important fraction of the total-water covered area, particularly during years of minimum water level in Mar Chiquita Lake. So, MNDWI values were analyzed along transects crossing two stable regional water bodies to determine precise thresholds for detection of non-water (MNDWI

Concepts

Modified Normalized Difference Water Index Landsat 8 Operational Land Imager Landsat 5 Thematic Mapper Operational Land Imager United Nations Territorial Management Thematic Mapper Nature Reserve Reflectance Data Stable Bodies

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