For rivers or streams with waterfalls, water withdrawal for multiple uses can lead to potential conflicts of interest. The question arises what extent impairs the appearance and acoustics waterfalls. A data set was analyzed 15 waterfalls different morphological types in Switzerland, Austria, Norway. It comprises discharge measurements as well photo imaging sound level measurements. variations w...

This study was conducted to investigate the seasonal variation of water qualities for drinking and conservation aquatic organisms from river, lake waterfalls in Chattogram Hill Tracts Bangladesh during pre-monsoon, monsoon post-monsoon seasons period March 2021 February 2022. Water samples were collected four sampling locations analysed research laboratory Department Environmental Science Resou...

Abstract Waterfalls can form due to external perturbation of river base level, lithologic heterogeneity, and internal feedbacks (i.e., autogenic dynamics). While waterfalls formed by heterogeneity are well documented, there is a lack criteria with which identify waterfalls, thereby limiting the ability assess influence on landscape evolution. We propose that evolve from bedrock bedforms known a...

Many works have considered two-dimensional free-surface flow over the edge of a plate, forming waterfall, and with uniform horizontal far upstream. The is assumed to be steady irrotational, whilst fluid inviscid incompressible. Gravity also taken into account. In particular, amongst these works, numerical solutions for supercritical flows been computed, utilising conformal mappings as well seri...

To study evolution, biologists have traditionally investigated what has happened in the past, sometimes many millions of years ago. To learn about dinosaurs, a paleontologist looks at dinosaur fossils. To study human evolution, an anthropologist looks at human fossils and, increasingly, examines the “family tree” of mutations that have accumulated in human DNA over millions of years. For the bi...

We propose a pseudo-Nambu-Goldstone inflation where twin waterfall fields coupled to the inflaton are responsible for graceful exit from by transition. In this scenario, $Z_2$ symmetry and protects potential against dangerous quantum corrections coming couplings. show that there is wide range of natural model parameters initial conditions successful discuss reheating process perturbative decay ...

Waterfalls as sources of small charged aerosol particles L. Laakso, A. Hirsikko, T. Grönholm, M. Kulmala, A. Luts, and T.-E. Parts Department of Physical Sciences, P.O. Box 64, 00014 University of Helsinki, Finland Institute of Environmental Physics, University of Tarto, Ülikooli 18, 50090, Tarto, Estonia Received: 22 June 2006 – Accepted: 31 August 2006 – Published: 26 September 2006 Correspon...