海洋科学
海洋科學
해양과학
MARINE SCIENCES
2015年
3期
48-58
,共11页
南黄海%粒度%季节变化%黄海暖流%黄海沿岸流
南黃海%粒度%季節變化%黃海暖流%黃海沿岸流
남황해%립도%계절변화%황해난류%황해연안류
South Yellow Sea%grain size%seasonal variations%Yellow Sea Warm Current%Yellow Sea Coastal Current
通过对南黄海春季和秋季27个相同站位表层沉积物的粒度分析，并结合水文观测资料，研究了南黄海表层沉积物粒度的季节变化，参考文献资料初步讨论了粒度变化的影响因素。研究结果显示，按照Folk分类，南黄海表层沉积物可以分为粉砂质砂、砂质粉砂、粉砂和泥四种类型。秋季与春季相比，总体上砂和粉砂的含量增加，黏土含量降低，相应地平均粒径相对变粗，分选系数和峰态的变化较小，而偏态表现为更加正偏。季节性变化还表现出明显的区域差异，主要是受环流系统、河流来沙及波浪的季节性变化的影响。
通過對南黃海春季和鞦季27箇相同站位錶層沉積物的粒度分析，併結閤水文觀測資料，研究瞭南黃海錶層沉積物粒度的季節變化，參攷文獻資料初步討論瞭粒度變化的影響因素。研究結果顯示，按照Folk分類，南黃海錶層沉積物可以分為粉砂質砂、砂質粉砂、粉砂和泥四種類型。鞦季與春季相比，總體上砂和粉砂的含量增加，黏土含量降低，相應地平均粒徑相對變粗，分選繫數和峰態的變化較小，而偏態錶現為更加正偏。季節性變化還錶現齣明顯的區域差異，主要是受環流繫統、河流來沙及波浪的季節性變化的影響。
통과대남황해춘계화추계27개상동참위표층침적물적립도분석，병결합수문관측자료，연구료남황해표층침적물립도적계절변화，삼고문헌자료초보토론료립도변화적영향인소。연구결과현시，안조Folk분류，남황해표층침적물가이분위분사질사、사질분사、분사화니사충류형。추계여춘계상비，총체상사화분사적함량증가，점토함량강저，상응지평균립경상대변조，분선계수화봉태적변화교소，이편태표현위경가정편。계절성변화환표현출명현적구역차이，주요시수배류계통、하류래사급파랑적계절성변화적영향。
We have analyzed graln sizes of 27 surface sediment samples collected from the same stations in the South Yel-low Sea in spring and autumn. Combined with hydrological data, the seasonal variations of graln size characteristics of sur-face sediments have been studied, and the influencing factors of the variations have also been discussed according to related literatures. The results indicate that the surface sediments in the South Yellow Sea can be divided into four kinds of types, including silty sand, sandy silt, silt and mud with Folk’s classification. Compared with the results in spring, the sand and silt contents increase while the clay content decreases in autumn. Correspondingly, the mean graln size (Mz) is coarser in au-tumn. The changes of sorting coefficient (σ) and kurtosis (Kμ) are smaller, while the skewness (Sk) is more positively skewed in autumn. Moreover, the seasonal variations show obvious regional differences, which are influenced by the circu-lation system, river discharges and seasonal changes of waves.
