| Influence of marine and continental processes on the dynamics of a sand-ridge at the mouth of the Mafaguaqu river (Caraguatabuba - SP): preliminary conditions</td>
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<td colspan="2" class="text5">关键词:
<a
href='http://oa.las.ac.cn/oainone/service/browseall/viewmore?ptype=JA&q= AND oakeywords:"Rio Maçaguaçu"'>Rio Maçaguaçu</a>;
<a
href='http://oa.las.ac.cn/oainone/service/browseall/viewmore?ptype=JA&q= AND oakeywords:"morfologia fluvial"'>morfologia fluvial</a>;
<a
href='http://oa.las.ac.cn/oainone/service/browseall/viewmore?ptype=JA&q= AND oakeywords:"erosão costeira"'>erosão costeira</a>;
<a
href='http://oa.las.ac.cn/oainone/service/browseall/viewmore?ptype=JA&q= AND oakeywords:"sedimentos"'>sedimentos</a>;
<a
href='http://oa.las.ac.cn/oainone/service/browseall/viewmore?ptype=JA&q= AND oakeywords:"marés"'>marés</a>;
<a
href='http://oa.las.ac.cn/oainone/service/browseall/viewmore?ptype=JA&q= AND oakeywords:"chuva"'>chuva</a>;
<a
href='http://oa.las.ac.cn/oainone/service/browseall/viewmore?ptype=JA&q= AND oakeywords:"vento"'>vento</a>;
<a
href='http://oa.las.ac.cn/oainone/service/browseall/viewmore?ptype=JA&q= AND oakeywords:"Maçaguaçu river"'>Maçaguaçu river</a>;
<a
href='http://oa.las.ac.cn/oainone/service/browseall/viewmore?ptype=JA&q= AND oakeywords:"fluvial morphology"'>fluvial morphology</a>;
<a
href='http://oa.las.ac.cn/oainone/service/browseall/viewmore?ptype=JA&q= AND oakeywords:"coastal erosion"'>coastal erosion</a>;
<a
href='http://oa.las.ac.cn/oainone/service/browseall/viewmore?ptype=JA&q= AND oakeywords:"sediments"'>sediments</a>;
<a
href='http://oa.las.ac.cn/oainone/service/browseall/viewmore?ptype=JA&q= AND oakeywords:"tides"'>tides</a>;
<a
href='http://oa.las.ac.cn/oainone/service/browseall/viewmore?ptype=JA&q= AND oakeywords:"rainfall"'>rainfall</a>;
<a
href='http://oa.las.ac.cn/oainone/service/browseall/viewmore?ptype=JA&q= AND oakeywords:"winds"'>winds</a>;
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<td class="text2" colspan="2" style="color: #2575A5;">DOI : 10.1590/S1679-87591983000100008</td>
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<td colspan="2" class="text5" style="color: #2575A5;">来源:<a
href='http://oa.las.ac.cn/oainone/service/browseall/viewmore?ptype=JA&q= AND oasourcestr:"DOAJ"'>
DOAJ</a></td>
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<div class="article">
<h6>【 摘 要 】</h6>
<p style="text-align: justify; text-indent: 2em;">
This paper deals with the sedimentation and erosion dynamics of a sand-ridge on the Maçaguaçu River mouth on the São Paulo coastal plain, north of Caraguatatuba Bay. Sedimentological, climatic and hydrodynamic data were analysed from an integrative point of view, considering relationships between continental and marine antagonic forces. Even if incomplete these preliminary observation show that erosion only occurs when more intense rains and higher tidal cycles coincide and that even the intense occurrence of one of these phenomena is not enough to trigger the destructive processes.<br>A dinâmica de sedimentação e erosão do "spit-bar" do rio Maçaguaçu (Caragua tatuba, São Paulo) foi preliminarmente avaliada através da integração de es tudos climáticos, hidrodinámicos e sedimentologicos, considerando-se as interrelaçoes das forças antagónicas entre os processos continental e marinho. A feição construtiva do "spit-bar" parece estar conectada com a dinámica dos processos marinhos. Suas características erosionáis parecem ser o resultado dos processos fluviais, intimamente relacionados aos períodos de intensa pluviosidade nas escarpas da Serra do Mar, quando da passagem de frentes atmosféricas.</p>
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<h6>【 授权许可】</h6>
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