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首页> 外文期刊>Journal of Asian earth sciences >Morphodynamics of the Red River Delta, Vietnam, introduction to the special issue
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Morphodynamics of the Red River Delta, Vietnam, introduction to the special issue

机译：越南红河三角洲的形态动力学，特刊简介

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摘要

The Red River Delta in the North of Vietnam (Fig. 1) is characterized by a triangular shaped low-lying delta plain that developed during the major part of the Holocene. The transition from estuary towards delta took place at about 8500 cal years BP and since then the delta has been growing in a downstream direction over a distance of more than 250 km. Especially, in the last 6500 years the delta system has been rapidly prograding due to a lack of accommodation space for the fluvial sediment in response to a stable or even falling sea level in the Gulf of Tonkin (Hori et al., 2004). About 4000 years ago, the former shoreline of the delta was located close to the present city of Hanoi. In the period 2000-1000 years BP the northern, tide-dominated part of the delta system developed. This part of the delta system is presently characterized by a series of funnel-shaped estuaries and tidal creeks (Fig. 1; see also Mathers and Zalasiewicz, 1999). However, about 1000 years ago, depositional processes shifted towards the south again, building up the southern delta lobe which appears to be dominated by fluvial and wave-induced morphological features.
机译：越南北部的红河三角洲（图1）的特征是在全新世的主要阶段发育的三角形低洼三角洲平原。从河口到三角洲的过渡发生在大约BP 8500cal年，从那时起，三角洲一直沿下游方向增长，距离超过250公里。特别是在过去的6500年中，由于东京湾海平面稳定甚至下降，三角洲系统由于缺乏河流沉积物的容纳空间而迅速发展（Hori等，2004）。大约4000年前，三角洲的前海岸线位于现在的河内市附近。在BP的2000-1000年期间，三角洲系统的北部，受潮汐控制的部分得以开发。三角洲的这一部分目前以一系列漏斗形的河口和潮汐小溪为特征（图1；另见Mathers和Zalasiewicz，1999）。然而，大约在一千年前，沉积过程再次向南移动，形成了南部三角洲的叶状体，该三角洲的叶状体似乎由河流和波浪诱导的形态特征所支配。

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