Parameterization of stream channel geometry in the distributed modeling of catchment dynamics

1998 ◽  
Vol 34 (8) ◽  
pp. 1971-1985 ◽  
Author(s):  
Stefano Orlandini ◽  
Renzo Rosso
Keyword(s):  
Stream Channel ◽  
Channel Geometry ◽  
Distributed Modeling

scholarly journals ANALYSIS OF STREAM CHANNEL GEOMETRY AND PHYSIOGRAPHIC FORMATIVE PROCESS IN VALLEY FLATS

2007 ◽  
Vol 51 ◽  
pp. 991-996 ◽  
Author(s):  
Takeshi NOGAMI ◽  
Yasuharu WATANABE ◽  
Hiroyasu YASUDA ◽  
Kazuyoshi HASEGAWA
Keyword(s):  
Stream Channel ◽  
Channel Geometry

scholarly journals An Evaluation of Data Collected by Middle School and College-Level Students in Stream Channel Geomorphic Assessment

2013 ◽  
Vol 2013 ◽  
pp. 1-9
Author(s):  
Martin D. Lafrenz
Keyword(s):  
Middle School ◽  
Cross Sections ◽  
Stream Velocity ◽  
College Level ◽  
Stream Channel ◽  
Channel Geometry ◽  
Student Groups ◽  
Portland State University ◽  
Bed Material ◽  
Accuracy And Repeatability

This project tested the accuracy and repeatability of geomorphic stream channel assessments conducted by two different middle school classes from the Walt Morey Middle School in Troutdale, OR and college students from Portland State University in Portland, OR. Each group surveyed the same three cross-sections in Fairview Creek, a tributary to the Lower Columbia River, in order to assess stream channel geometry, discharge, composition of the bed material, and water quality. The three student groups were all able to accurately document the stream channel geometry, including stream width and mean depth, indicating that these data can be successfully collected by volunteers of various ages. However, stream velocity obtained using the float method was consistently overestimated leading to a biased calculation of discharge, and the low precision of the measurements did not allow for a correction of the bias. The median particle size of the bed material determined by a pebble count was also overestimated by each group, but the low precision also negated the possibility of correcting the estimate. The stored fine sediment in the bed was underestimated by each group and again with low precision. The temperature, pH, and conductivity measured with a calibrated multimeter were accurate and precise for all groups.

Estimation of stream channel geometry in Idaho using GIS-derived watershed characteristics

2009 ◽  
Vol 24 (3) ◽  
pp. 444-448 ◽  
Author(s):  
Daniel P. Ames ◽  
Eric B. Rafn ◽  
Robert Van Kirk ◽  
Benjamin Crosby
Keyword(s):  
Stream Channel ◽  
Watershed Characteristics ◽  
Channel Geometry

A Cost-Effective Laser Scanning Method for Mapping Stream Channel Geometry and Roughness

2015 ◽  
Vol 51 (5) ◽  
pp. 1211-1220 ◽  
Author(s):  
Norris Lam ◽  
Marcus Nathanson ◽  
Niclas Lundgren ◽  
Robin Rehnström ◽  
Steve W. Lyon
Keyword(s):  
Laser Scanning ◽  
Cost Effective ◽  
Stream Channel ◽  
Scanning Method ◽  
Channel Geometry

Distributed Modeling Of Building Systems Through Cyber-Physical Integration

2019 ◽  
pp. 12-17
Keyword(s):  
Data Structure ◽  
Operating Conditions ◽  
Physical Models ◽  
Distributed Model ◽  
Physical Processes ◽  
Distributed Modeling ◽  
Distributed Models ◽  
Operating Modes ◽  
Building Systems ◽  
Important Practical Application

This article describes the proposed approaches to creating distributed models that can, with given accuracy under given restrictions, replace classical physical models for construction objects. The ability to implement the proposed approaches is a consequence of the cyber-physical integration of building systems. The principles of forming the data structure of designed objects and distributed models, which make it possible to uniquely identify the elements and increase the level of detail of such a model, are presented. The data structure diagram of distributed modeling includes, among other things, the level of formation and transmission of signals about physical processes inside cyber-physical building systems. An enlarged algorithm for creating the structure of the distributed model which describes the process of developing a data structure, formalizing requirements for the parameters of a design object and its operating modes (including normal operating conditions and extreme conditions, including natural disasters) and selecting objects for a complete group that provides distributed modeling is presented. The article formulates the main approaches to the implementation of an important practical application of the cyber-physical integration of building systems - the possibility of forming distributed physical models of designed construction objects and the directions of further research are outlined.

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