海洋地质与第四纪地质2017，Vol.37Issue(1)：67-76,10.DOI:10.16562/j.cnki.0256-1492.2017.01.008
北部湾东南海域海底沙波发育分布特征及控制因素
DISTRIBUTION PATTERN AND CONTROL FACTORS OF SAND WAVES IN SOUTHEAST BEIBU GULF
摘要
Abstract
To access the main factors influencing development and distribution of sand waves,analyses have been undertaken on the characteristics of sediment,hydrodynamics and sea level changes using the latest high-resolution multibeam,surface sediment and hydrodynamic data collected in the southeast of Beibu Gulf,where sand waves are abundantly developed.Results suggest that sand waves in this area are widespread,mostly developed on the sand ridges and in the troughs between sand ridges.Sand waves are smaller in scale in the offshore area but larger in the area nearshore.The development and distribution features of sand waves depend upon modern hydrodynamics and sediment supply.Geometric features and dimension of sand waves depend upon tidal inlet and flow velocity.Surface sediments are usually "finer offshore and coarser nearshore",corresponding to the distribution of sand waves referred above.Besides,some of the symmetrical sand waves are found in certain areas with residual properties,perhaps as the result of different hydrodynamics while sea level changes in different periods.关键词
海底沙波/分布特征/控制因素/北部湾Key words
sand waves/distribution characteristics/control factors/Beibu Gulf分类
海洋科学引用本文复制引用
郭立,马小川,阎军..北部湾东南海域海底沙波发育分布特征及控制因素[J].海洋地质与第四纪地质,2017,37(1):67-76,10.基金项目
国家自然科学基金青年基金项目(41406061) （41406061）
