Limnology, the Study of Inland Waters: a Comment on Perceptions of Studies of Salt Lakes, Past and Present

Author(s):  
W. D. Williams
Keyword(s):  
2001 ◽  
Vol 43 (4) ◽  
pp. 85-91 ◽  
Author(s):  
W. D. Williams

The global hydrological and salt cycles are described, as are the ways in which human activities have led to their disturbance. One effect of this disturbance is the unnatural increase in the salinity of many inland waters (secondary salinization). The geographical extent of secondary salinization is outlined, together with its effects on various types of inland waters, such as salt lakes, freshwater lakes and wetlands, and rivers and streams. The likely impact on salinization of global climate change is summarized.


1976 ◽  
Vol 27 (3) ◽  
pp. 359 ◽  
Author(s):  
RT Buckney ◽  
PA Tyler

Analyses are presented of major chemical features of pans and lagoons in the sub-humid regions of Tasmania. The waters sampled are classed as fresh or saline, using a criterion which is a function of relative ionic composition. Saline waters are regarded as having ionic composition limited by the solubility of alkaline earth carbonates, and they have a composition akin to that of seawater. The fauna of salt pans is briefly mentioned. These analyses complete a survey of Tasmanian surface waters, and some relationships between ionic concentrations and other chemical parameters are reassessed for the entire salinity range (<10 ppm to > 200‰) of Tasmanian inland waters.


Author(s):  
P. S. Maitland ◽  
A. V. Holden
Keyword(s):  

Author(s):  
Hebin Liang ◽  
Fan Wang ◽  
Rong Mu ◽  
Jin Huang ◽  
Renxin Zhao ◽  
...  

2021 ◽  
Vol 9 (4) ◽  
pp. 410
Author(s):  
Fan Zhang ◽  
Xin Peng ◽  
Liang Huang ◽  
Man Zhu ◽  
Yuanqiao Wen ◽  
...  

In this study, a method for dynamically establishing ship domain in inland waters is proposed to help make decisions about ship collision avoidance. The surrounding waters of the target ship are divided to grids and then calculating the grid densities of ships in each moment to determine the shape and size of ship domain of different types of ships. At last, based on the spatiotemporal statistical method, the characteristics of ship domains of different types of ship in different navigational environments were analyzed. The proposed method is applied to establish ship domains of different types of ship in Wuhan section of the Yangtze River in January, February, July, and August in 2014. The results show that the size of ship domain increases as the ship size increases in each month. The domain size is significantly influenced by the water level, and the ship domain size in dry seasons is larger than in the wet seasons of inland waters.


Sign in / Sign up

Export Citation Format

Share Document