
[地理] 辮狀河;分汊河道;網狀河道;辮狀河川
The ore-hosting Yaojia Formation is composed of a set of braided stream medium-fine grained sediments.
姚家組為一套中細粒辮狀河流沉積。
The reservoir of meandering stream and braided stream are widely distributed in the continental facies basin.
曲流河、辮狀河儲層在我國的陸相盆地中廣泛分布。
Alluvial fan facies, braided stream delta facies and flooded plain facies are developed in Kongdian Formation of Bamianhe area.
八面河地區孔店組存在沖積扇、辮狀河三角洲和洪泛平原相。
The fault subsidence lacustrine ***d out in late-Jurassic and damp type fan, braided stream and meander river sedimentary sequence was formed.
上侏羅統為斷陷消亡期沉積,形成濕型扇—辮狀河—曲流河沉積序列。
The results show that there are fan-delta deposit and braided stream deposit in th is area, they are further divided into 4 sub-facies and 9 micro-facies.
結果表明:研究區内為辮狀河和扇三角洲沉積,進一步分為4種亞相,9種微相。
辮狀河(Braided Stream) 是一種具有獨特形态的河流類型,其河道被衆多沙洲或江心洲分割成多條交織如辮、時分時合的汊道。這種河流通常出現在坡度較陡、流量變化大、河床沉積物以粗顆粒(如砂礫、卵石)為主的區域。其形成與維持依賴于三個關鍵因素:高輸沙量、流量劇烈波動以及河岸抗侵蝕能力弱。當河流攜帶的泥沙量超過其輸運能力時,多餘的泥沙會在河道中堆積形成沙洲;而頻繁的洪水或季節性流量變化會不斷沖刷、改造這些沙洲的位置和形态,導緻河道頻繁分汊、遷移,最終形成辮狀外觀。
來源:美國地質調查局(USGS)河流地貌學基礎指南
來源:國家地理學會(National Geographic Society)水文地貌詞條
來源:劍橋大學地貌學實驗室河流動力學研究
辮狀河常見于以下環境:
“Braided stream”是地理學術語,指由多個交織的分支水道組成的河流形态,因形似編織的辮子而得名。以下是詳細解釋:
如提到的例句:“They wore their hair braided in long pigtails.”(他們将頭發編成長辮子),通過類比說明河道分支的編織形态。
若需進一步了解具體案例或地質模型,可參考來源中的地理學文獻或沉積相分析資料。
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