文章基本信息

标题：Submarine groundwater discharge revealed by radium isotopes (Ra-223 and Ra-224) near a paleochannel on the Southern Brazilian continental shelf
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作者：Attisano, Karina Kammer ; Santos, Isaac Rodrigues ; Andrade, Carlos Francisco Ferreira de 等
期刊名称：Brazilian Journal of Oceanography
印刷版ISSN：1679-8759
电子版ISSN：1982-436X
出版年度：2013
卷号：61
期号：3
页码：195-200
DOI：10.1590/S1679-87592013000300004
出版社：Instituto Oceanográfico da Universidade de São Paulo
摘要：Submarine Groundwater Discharge (SGD) has been recognized as an important component of the ocean-continent interface.The few previous studies in Brazil have focused on nearshore areas.This paper explores SGD on the Southern Brazilian Continental Shelf using multiple lines of evidence that include radium isotopes, dissolved nutrients, and water mass observations.The results indicated that SGD may be occurring on the Continental Shelf in the Albardão region, near a paleochannel located 50 km offshore.This paleochannel may thus be a preferential pathway for the delivery of nutrient- and metal-enriched groundwater and porewater into continental shelf waters.
关键词：Água intersticial;Estuário subterrâneo;Sedimentos permeáveis
其他关键词：Porewater;Subterranean estuary;Permeable sediments