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	Provedor de dados Boletín de Investigaciones (2) Autor Ricaurte-Villota,Constanza (2) Correa-Ramirez,Marco (1) Mendoza-Hidalgo,Pablo Antonio (1) Pacheco,Wilberto (1) Poma-Llantoy,Víctor Raul (1) Palavra-chave 137Cs (1) 40K (1) Antarctic (1) Coastal zone (1) Covid-19. (1) Environmental indices (1) Environmental quality (1) Radiation monitoring. (1) Radioactive contamination (1) Remote sensing (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2021 (2) País Colombia (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Characterization of radionuclides in the marine sediments of Orca Seamount, Admiralty Bay, and Mackellar Cove Boletín de Investigaciones Poma-Llantoy,Víctor Raul; Mendoza-Hidalgo,Pablo Antonio; Ricaurte-Villota,Constanza. ABSTRACT Contamination by radioactive elements and their transfer through the trophic chain can have harmful effects on ecosystems and human health, therefore its continuous monitoring is important. The present study aimed to characterize the concentration of radionuclides of natural and anthropogenic origin in marine sediments from three areas in the northwest of Antarctica, Orca Seamount, Admiralty Bay and Mackellar Inlet, in order to evaluate possible risk levels, sources and transportation routes. Measurements were made using a high-resolution Canberra spectrometer and methodological precision and accuracy was assessed by analyzing reference materials certified by the International Atomic Energy Agency (IAEA), SOIL-6 and Moss SOIL-447. The results... Tipo: Info:eu-repo/semantics/article Palavras-chave: 137Cs; 40K; Antarctic; Radioactive contamination; Radiation monitoring.. Ano: 2021 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612021000300109 The environmental recovery of the main tourist destinations in the Colombian Caribbean during the Covid-19 quarantine Boletín de Investigaciones Correa-Ramirez,Marco; Pacheco,Wilberto; Ricaurte-Villota,Constanza. ABSTRACT To counteract the spread of the Covid-19 pandemic disease, the Colombian government decreed a quarantine period from March 24 to July 1, 2020, which forced the cessation of tourist activities and the closure of the main tourist destinations of the Colombian Caribbean: Santa Marta, Cartagena, and San Andrés. During this period, a significant increase in the environmental quality of these coastal zones was perceived. To quantify environmental changes in the coastal zone, the variation in chlorophyll concentration and total suspended solids observed by the Sentinel-3 satellite mission, 30 days before and after the start of the quarantine, was analyzed. The results showed a decrease in the concentration of chlorophyll (> 20 %) and suspended solids... Tipo: Info:eu-repo/semantics/article Palavras-chave: Coastal zone; Environmental indices; Remote sensing; Environmental quality; Covid-19.. Ano: 2021 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612021000200161 Registros recuperados: 2 Primeira ... 1 ... Última

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