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		<isbn>978-85-17-00088-1</isbn>
		<label>59318</label>
		<citationkey>SilvaMendNoer:2017:QuTuCh</citationkey>
		<title>The Mariana dam s disaster: quantifying turbidity changes and behavior of the River Doce plume in Brazil</title>
		<format>Internet</format>
		<year>2017</year>
		<secondarytype>PRE CN</secondarytype>
		<numberoffiles>1</numberoffiles>
		<size>1467 KiB</size>
		<author>Silva, Edson Filisbino Freire da,</author>
		<author>Mendonça, Brenda Borges,</author>
		<author>Noernberg, Mauricio Almeida,</author>
		<electronicmailaddress>breendabm@gmail.com</electronicmailaddress>
		<editor>Gherardi, Douglas Francisco Marcolino,</editor>
		<editor>Aragão, Luiz Eduardo Oliveira e Cruz de,</editor>
		<e-mailaddress>daniela.seki@inpe.br</e-mailaddress>
		<conferencename>Simpósio Brasileiro de Sensoriamento Remoto, 18 (SBSR)</conferencename>
		<conferencelocation>Santos</conferencelocation>
		<date>28-31 maio 2017</date>
		<publisher>Instituto Nacional de Pesquisas Espaciais (INPE)</publisher>
		<publisheraddress>São José dos Campos</publisheraddress>
		<pages>4993-5000</pages>
		<booktitle>Anais</booktitle>
		<organization>Instituto Nacional de Pesquisas Espaciais (INPE)</organization>
		<transferableflag>1</transferableflag>
		<abstract>On November 5th 2015, the Fundaos dam collapsed in Mariana, Minas Gerais state, releasing approximately 55 million/m³ of tailings to the coast and marine conservation units. The dams sediment plume carried by the River Doce could alter local physical conditions and our study focuses on the changes in turbidity. We made use of a specific method, MODIS-Aqua images and meteorological data to assess and quantify turbidity before and after the disaster. Our results show that the plume dispersion and turbidity are very sensitive to precipitation rates and the predominating winds. Before the disaster, close to the river mouth, turbidity values can sometimes reach around 900 FNU, whereas after the disaster this variable reached values beyond the 1,000 FNU, suggesting the influence of the tailings dam. We also generated a map that shows the percentage change in turbidity after the incident, based on maximum value of turbidity per pixel observed before. We observed an increase of more than 600% in turbidity during different periods. Our data suggest that turbidity was indeed altered at further regions, reaching both conservation units of Costa das Algas and Santa Cruz. The tailings plume showed a strong influence on turbidity until late January of 2016, weakening from February on.</abstract>
		<area>SRE</area>
		<type>Oceanografia</type>
		<language>en</language>
		<targetfile>59318.pdf</targetfile>
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