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Bibliographic Details
Main Author:	Helenice Vital
Format:	Artículo científico
Language:	pt
Published:	Associação Portuguesa dos Recursos Hídricos 2008
Subjects:	Ciencias de la Tierra
Online Access:	https://www.redalyc.org/articulo.oa?id=388340124009
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Morfodinâmica de um Canal de Maré Tropical: Estudo de Caso na Costa Norte Rio Grandense, Nordeste do Brasil Helenice Vital Francisco dos Santos Neto José Saraiva Plácido Junior Ciencias de la Tierra Este artigo trata da morfodinâmica de um canal de maré em barreira costeira tropical, localizado na Reserva de Desenvolvimento Sustentável Ponta do Tubarão-RDSPT, nordeste do Brasil. A região esta sujeita à alta energia sendo classificada como costa mista, dominada por ondas e marés. A influência significativa das marés sobre o sistema barreiras/ canais de marés provoca a formação de proeminentes deltas de maré vazante. A compreensão dos mecanismos de crescimento da barreira costeira e canais associados da Ponta do Tubarão auxiliarão na reconstrução da dinâmica e evolução costeira desta região. Nesta área a barreira costeira tem se modificado de barreira pontal para pontal e ilha barreiras a partir de aberturas de canais de marés no pontal inicial. O primeiro canal aberto naturalmente em 1977, originou a ilha Barreira Ponta do Tubarão, e desde então este canal de maré denominado Barra do Fernandez, tem sido usado como acesso de navegação pelos habitantes das comunidades locais de Barreiras e Diogo Lopes. Entretanto, como a distância entre o canal e Diogo Lopes é maior, persistiram as pressões publicas para abertura de acessos adicionais a navegação. A abertura natural de um novo canal em 2006 proporcionou a oportunidade para acompanhar sistematicamente as mudanças ocorridas em um canal de maré tropical. Desta forma, objetivando uma melhor compreensão dos processos costeiros atuantes na região o segundo canal tem sido monitorado e os dados aqui apresentados incluem a integração de sensoriamento remoto, levantamento batimétrico, sedimentologia, monitoramento da morfodinâmica e forçantes oceanográficas... 2008 artículo científico 1646-8872 https://www.redalyc.org/articulo.oa?id=388340124009 pt http://www.redalyc.org/revista.oa?id=3883 Revista de Gestão Costeira Integrada - Journal of Integrated Coastal Zone Management application/pdf Associação Portuguesa dos Recursos Hídricos Revista de Gestão Costeira Integrada - Journal of Integrated Coastal Zone Management (Portugal) Num.2 Vol.8

if (filemtime($filename) + $maxlifetime < time()) { unlink($filename); $count++; } } return $count; } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ protected function saveSession($sessId, $data): bool { $sessFile = $this->path . '/sess_' . $sessId; if ($handle = fopen($sessFile, 'w')) { $return = false; // Lock the file for exclusive access to avoid issues with multiple // processes writing session simultaneously: if (flock($handle, LOCK_EX)) { $return = fwrite($handle, $data); // Make sure that there's no trailing data by truncating the file to // the correct length: ftruncate($handle, strlen($data)); fflush($handle); flock($handle, LOCK_UN); } fclose($handle); if ($return !== false) { return true; } } // If we got this far, something went wrong with the file output... // It is tempting to throw an exception here, but this code is called // outside of the context of exception handling, so all we can do is // echo a message.

// Anecdotal testing Today and Yesterday seems to indicate destroy() // is called by the garbage collector and everything is good. // Something to keep in mind though. return 0; } /** * Write function that is called when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ public function write($sessId, $data): bool { if ($this->writesDisabled) { return true; } return $this->saveSession($sessId, $data); } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ abstract protected function saveSession($sessId, $data): bool; }

* * @return void */ public function writeClose() { // The assumption is that we're using PHP's ext/session. // session_write_close() will actually overwrite $_SESSION with an // empty array on completion -- which leads to a mismatch between what // is in the storage object and $_SESSION. To get around this, we // temporarily reset $_SESSION to an array, and then re-link it to // the storage object. // // Additionally, while you _can_ write to $_SESSION following a // session_write_close() operation, no changes made to it will be // flushed to the session handler. As such, we now mark the storage // object isImmutable. $storage = $this->getStorage(); if (! $storage->isImmutable()) { $_SESSION = $storage->toArray(true); session_write_close(); $storage->fromArray($_SESSION); $storage->markImmutable(); } } /** * Attempt to set the session name * * If the session has already been started, or if the name provided fails * validation, an exception will be raised. * * @param string $name * @return SessionManager * @throws Exception\InvalidArgumentException */ public function setName($name) { if ($this->sessionExists()) { throw new Exception\InvalidArgumentException( 'Cannot set session name after a session has already started'

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