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Camacho inlet southern Brazil — Instability causes and user conflicts

机译：巴西南部卡马乔（Camacho）入口-不稳定原因和用户冲突

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摘要

Inlet stabilization is a common practice in Brazil, as it is worldwide. In this paper we present results of the analysis of the stabilization practices of the Camacho Inlet, located in Santa Catarina State, southern Brazil. This inlet is maintained intermittently, in accordance with a regime designed to benefit both local fishermen and rice farmers. Fishermen require this inlet to be open as a navigation channel during the fishing season; rice farmers needs it closed during the irrigation period to allow the pumping of fresh water from the Congonhas River which drains into the Camacho's backbarrier lagoon. An additional complication arises from the tendency of this inlet to close naturally due to infilling by dune migration. Aerial images spanning a 65 year time period (1938—2003) were analyzed, demonstrating the variability in the inlet's width between 0 (closed) and 360 m. The analysis of inlet stability and user needs indicate that an appropriate solution is the implementation of an annual inlet dredging program in the austral autumn. This would allow for the inlet to remain open from May to September and then close naturally for the rest of the year, providing for a backbarrier fresh water reservoir during the irrigation period.
机译：在巴西和全球，进水口稳定是一种普遍做法。在本文中，我们介绍了位于巴西南部圣卡塔琳娜州的Camacho入口稳定措施的分析结果。根据旨在使当地渔民和稻农都受益的制度，对该进口进行间歇性维护。渔民要求在捕鱼季节开放此入口作为航行通道。稻农需要在灌溉期间将其关闭，以允许从Congonhas河抽入淡水，该河排入Camacho的后垒泻湖。由于由于沙丘迁移造成的填充，该入口趋于自然关闭的趋势引起了另外的复杂情况。分析了跨越65年时间段（1938年至2003年）的航拍图像，证明了入口宽度在0（闭合）和360 m之间变化。进水口稳定性和用户需求的分析表明，适当的解决方案是在每年秋季进行年度进水口疏program计划。这样可以使进水口在5月至9月保持打开状态，然后在一年中的其余时间自然关闭，从而在灌溉期间提供了一个后壁式淡水蓄水池。

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  • 来源
    《Ocean & coastal management》 |2011年第8期|p.569-576|共8页
  • 作者

    Guilherme Vieira da Silva; Joao Luiz Baptista de Carvalho; Antonio Henrique da Fontoura Klein;

  • 作者单位

    Universidade de Santa Catarina, UFSC, Laboratorio de Oceanografia Costeira, Campus Universitario, Trindade, Florianopolis, SC 88040-900, Brazil;

    Universidade de Santa Catarina, UFSC, Laboratorio de Oceanografia Costeira, Campus Universitario, Trindade, Florianopolis, SC 88040-900, Brazil;

    Universidade de Santa Catarina, UFSC, Laboratorio de Oceanografia Costeira, Campus Universitario, Trindade, Florianopolis, SC 88040-900, Brazil;

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