scholarly journals NUMERICAL MODELING OF RIVER ECOSYSTEM AND APPLICATION TO CHANNEL NETWORK STRUCTURE IN A RIVER BASIN

2013 ◽  
Vol 69 (6) ◽  
pp. II_127-II_138
Author(s):  
Yuji TODA ◽  
Takamasa YAMASHITA ◽  
Hitoshi MIYAMOTO ◽  
Tetsuro TSUJIMOTO
Keyword(s):  
Numerical Modeling ◽  
River Basin ◽  
Network Structure ◽  
River Ecosystem ◽  
Channel Network

scholarly journals Morphometry and geomorphic development of the Bagmati River Basin, Nepal Himalaya

2013 ◽  
Vol 46 ◽  
Author(s):  
Pramila Shrestha ◽  
Naresh Kazi Tamrakar
Keyword(s):  
River Basin ◽  
Quantitative Description ◽  
Drainage System ◽  
Higher Order ◽  
Tectonic Activity ◽  
Mature Stage ◽  
Channel Network ◽  
Order Stream ◽  
Tectonic Zone ◽  
Bagmati River

Morphometric analysis of a watershed provides a quantitative description of the drainage system which is an important aspect of characterization of watershed. The analysis requires measurement of linear features, aerial aspects, gradient of channel network and contributing ground slopes of the drainage basin. The morphometric characteristics at the watershed-scale may contain important information regarding its formation and development because all hydrologic and geomorphic processes occur within the watershed. In this study morphometric property of the Bagmati River Basin (BRB) was investigated using different morphometric attributes and hypsometric analysis in order to investigate geomorphic development of the river basin, in an active tectonic zone. DEM has been prepared from the contour and spot height data using digital topographic maps of 1:25000-scale acquired from the Department of Survey, Nepal. The main stem Bagmati River is the eighth order perennial river that stretches for 206 km with an elongated catchment of area 3761 sq. km. It consists of 39 sub-basins of fourth order and higher. The study shows that the drainage system of the BRB is attaining a mature stage from a youth stage from lower order streams to the higher order streams in geomorphic development process. Some exceptions occurred at higher order stream segments, where drainage development seems to control by structure and lithology. According to the analytical results, erosional stage and level of tectonic activity of sub-basins differ from each other. Generally, the lithology and geological structure seems to control the drainage texture and relief of the BRB. The river system within the Kathmandu Valley is attaining maturity having meandering channels with wide flood plains, whereas rivers of the Lesser Himalaya and the Siwaliks are at youth stage with erosional potential. The downstream part of higher order stream segments are in mature stage having potential for lateral erosion and meander migration. Therefore, the Bagmati River stretch, especially the eight order one poses vulnerability to bank erosion.

scholarly journals Pembangunan Taman Wisata Eko-Kuliner di Daerah Aliran Sungai Badung untuk Mendukung Pariwisata Budaya di Kota Denpasar

2019 ◽  
Vol 9 (1) ◽  
pp. 71
Author(s):  
I Gusti Ketut Purnaya ◽  
Ni Luh Supartini ◽  
I Made Trisna Semara
Keyword(s):  
River Basin ◽  
Participant Observation ◽  
Cultural Tourism ◽  
Substantial Contribution ◽  
Tourist Attraction ◽  
River Ecosystem ◽  
Culinary Tourism ◽  
Tourism Potential ◽  
Depth Interviews

The river has a substantial contribution in our life. But in reality the quality of rivers in Indonesia is in a heavily polluted condition. Various river structuring efforts have been carried out such as maintaining cleanliness, managing the smooth running of water, and educating people not to throw garbage into the river. This article aims to identify potential and determine the design in developing the Badung River basin to support the development of cultural tourism in Denpasar City. The technique of collecting data uses non-participant observation, document study, and in-depth interviews. This article concludes that Sungai Badung has a variety of tourism potential that can be developed as a new tourist attraction. The concept of development by designing eco-culinary tourism parks combines the concepts of ‘eco-tourism’ and ‘culinary tourism’ in an effort to create sustainable tourism without damaging the river ecosystem.

scholarly journals The Hydrologic Response of The Eaton River Basin, Quebec

1971 ◽  
Vol 8 (1) ◽  
pp. 102-115 ◽  
Author(s):  
M. A. Carson ◽  
E. A. Sutton
Keyword(s):  
Surface Water ◽  
River Basin ◽  
Parametric Study ◽  
Source Area ◽  
Water Systems ◽  
Hydrologic Response ◽  
Rainfall Runoff ◽  
Channel Network ◽  
Storm Rainfall ◽  
Runoff Production

This paper reports a parametric study of rainfall–runoff relations for 38 storms in the Eaton basin, southeastern Quebec, between 1950 and 1966. In addition to storm rainfall amounts, water table levels in the vicinity of the channel network, as indicated by baseflow prior to storms, appear to be very important in controlling the amount of response of the basin in different storms. Storm runoff is viewed as the product of direct interception by, and subsurface seepage into, expanded surface water systems in the valley floor areas of the basin. This is in agreement with the variable (partial) source area model developed over the last ten years by a number of hydrologists as an alternative to the Horton theory of runoff production.

Multidimensional influencing factors of public opinion information dissemination in social media: Evidence from Weibo dataset

2019 ◽  
Vol 33 (31) ◽  
pp. 1950375 ◽  
Author(s):  
Guanghui Wang ◽  
Yufei Wang ◽  
Kaidi Liu ◽  
Jimei Li
Keyword(s):  
Social Media ◽  
Public Opinion ◽  
Information Content ◽  
Influencing Factors ◽  
Network Structure ◽  
Information Dissemination ◽  
Influential Factors ◽  
Channel Network ◽  
The Public ◽  
Information Characteristics

The factors influencing the dissemination of public opinion on social media, the main carrier of public opinion, are diverse, complex and changeable. Existing studies of influential factors of public opinion dissemination focus on the information itself and information sources in the dissemination process, failing to consider the comprehensive influence of multidimensional factors, such as information content, sources and channels. This study takes the identification of multidimensional influential factors of social media information dissemination as the research object and comprehensively sorts out the influencing factors of public opinion. To improve the scientific basis and accuracy of the research, multidimensional factors, including information characteristics, dissemination network structure and user-level attributes, are selected to analyze the effect of influential factors in different dimensions on the dissemination of social media public opinion information using econometric models. Three main conclusions of this paper are as follows: (1) The traditional information characteristics (information content) and information source attributes (user-level factor) are not the only key factors affecting information dissemination, while the information channel (network structure) is worth more consideration. (2) Netizens tend to pay more attention to the psychological and emotional attributes of information when forwarding public opinions. The communication mode in which offline social elites enlighten the public no longer exists; whether a user is a network celebrity or lives in the central area no longer significantly affects public opinion dissemination. (3) The higher the total amount of information users release, the more the information would interfere with the public opinion. This is mainly because users with a higher level of activity may release more invalid information about advertising that has nothing to do with public opinion events.

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