本文選題：海洋地質(zhì)學(xué)　切入點(diǎn)：平海灣外灣　出處：《應(yīng)用海洋學(xué)學(xué)報(bào)》2017年02期 　論文類(lèi)型：期刊論文

【摘要】：通過(guò)對(duì)平海灣外灣106個(gè)表層沉積物樣品的粒度分析,闡述了平海灣外灣表層沉積物的物質(zhì)組成和粒度參數(shù)分布特征.利用沉積物粒徑趨勢(shì)模型初步探討了平海灣外灣的沉積物輸運(yùn)趨勢(shì),結(jié)合新老海圖對(duì)比,分析了該海域的沖淤變化特征,并結(jié)合平海灣發(fā)展規(guī)劃選取代表站位來(lái)分析計(jì)算潮流和波浪對(duì)海底沉積物的沖刷.結(jié)果表明,研究海域表層沉積物可分為5種類(lèi)型,主要為粘土質(zhì)粉砂,隨著水深的增加,沉積物呈逐漸變細(xì)的趨勢(shì).沉積物的平均粒徑(Mz)、分選系數(shù)(σi)、偏態(tài)(S_(ki))及峰態(tài)(K_g)的分布與研究區(qū)海域沉積環(huán)境和水動(dòng)力條件等相對(duì)應(yīng).粒徑趨勢(shì)分析顯示研究區(qū)表層沉積物的輸運(yùn)趨勢(shì)主要為NW向和SE向.對(duì)比不同年代海圖及觀測(cè)資料表明,研究海域呈弱淤積狀態(tài);經(jīng)過(guò)分析計(jì)算,研究區(qū)海底沉積物不是受到潮流而是波浪的沖刷.
[Abstract]:Based on the particle size analysis of 106 surface sediment samples from the outer bay of Pinghai Bay, The characteristics of material composition and particle size parameter distribution of surface sediments in the outer bay of Pinghai Bay are described. The sediment transport trend in the outer bay of Pinghai Bay is preliminarily discussed by using the sediment particle size trend model, and combined with the comparison of new and old charts. The characteristics of scour and siltation in the sea area are analyzed, and the representative stations are selected in the development plan of Pinghai Bay to analyze and calculate the erosion of sea bottom sediments by tidal currents and waves. The results show that the surface sediments in the study area can be divided into five types. Mainly clay silty sand, with the increase of water depth, The distribution of the average grain size of sediment (蟽 _ I _ (I)), the sorting coefficient (蟽 _ I _ (I)) and the peak _ state _ K _ g correspond to the sedimentary environment and hydrodynamic conditions in the study area. The analysis of particle size trend shows that the surface layer of the study area is characterized by the distribution of grain size trend. The transport trends of sediments are mainly NW and SE. The sediment in the study area is not subject to tidal current but washed by waves.
【作者單位】： 國(guó)家海洋局第三海洋研究所;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(1401129) 海洋公益性行業(yè)科研專(zhuān)項(xiàng)經(jīng)費(fèi)資助項(xiàng)目(201405025)
【分類(lèi)號(hào)】：P736.21

【相似文獻(xiàn)】

相關(guān)期刊論文 前1條

1 張海峰;;福建平海灣沉積動(dòng)力特征與海床穩(wěn)定性分析[J];應(yīng)用海洋學(xué)學(xué)報(bào);2013年01期

，

本文編號(hào)：1587860