منابع مشابه
Entropy and optimality in river deltas
The form and function of river deltas is intricately linked to the evolving structure of their channel networks, which controls how effectively deltas are nourished with sediments and nutrients. Understanding the coevolution of deltaic channels and their flux organization is crucial for guiding maintenance strategies of these highly stressed systems from a range of anthropogenic activities. To ...
متن کاملTransport and Vulnerability in River Deltas: A Graph-Theoretic Approach
Maintaining a sustainable socio-ecological state of a river delta requires delivery of material and energy fluxes to its body and coastal zone in a way that avoids malnourishment that would compromise system integrity. We present a quantitative framework for studying delta topology and transport based on representation of a deltaic system by a rooted directed acyclic graph. Applying results fro...
متن کاملHeavy metal contamination of brown seaweed and sediments from the UK coastline between the Wear river and the Tees river.
The concentration of Fe, Mn, Zn, Cu, Pb, Ni, Cr, Cd, and Ag were determined in the brown alga Fucus vesiculosus and intertidal surface sediments from coastal locations of northeast England. Levels of heavy metals similar to those of polluted areas of the British coastline were detected. There is evidence of contamination (especially with Zn and Pb) in sediments from sites affected by colliery s...
متن کاملTesting morphodynamic controls on the location and frequency of river avulsions on fans versus deltas: Huanghe (Yellow River), China
A mechanistic understanding of river avulsion location and frequency is needed to predict the growth of alluvial fans and deltas. The Huanghe, China, provides a rare opportunity to test emerging theories because its high sediment load produces regular avulsions at two distinct nodes. Where the river debouches from the Loess Plateau, avulsions occur at an abrupt decrease in bed slope and reoccur...
متن کاملMagnitude of arsenic pollution in the Mekong and Red River Deltas--Cambodia and Vietnam.
Large alluvial deltas of the Mekong River in southern Vietnam and Cambodia and the Red River in northern Vietnam have groundwaters that are exploited for drinking water by private tube-wells, which are of increasing demand since the mid-1990s. This paper presents an overview of groundwater arsenic pollution in the Mekong delta: arsenic concentrations ranged from 1-1610 microg/L in Cambodia (ave...
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ژورنال
عنوان ژورنال: Coastal Engineering Proceedings
سال: 1964
ISSN: 2156-1028,0589-087X
DOI: 10.9753/icce.v9.13