Temporal variation of Manning roughness coefficient in furrow irrigation and its relationship with various field parameters

This research aimed to ascertain the Manning roughness coefficient ( n ) and explore the impact of various factors on it across different phases and irrigation events. The Manning’s n for furrow irrigation was determined in the advance, storage, and whole irrigation phases utilizing the SIPAR_ID mod...

Full description

Saved in:
Bibliographic Details
Published in:Applied water science Vol. 15; no. 1; pp. 7 - 19
Main Authors: Rad, Hadi Rezaei, Ebrahimian, Hamed, Liaghat, Abdolmajid, Khalaji, Fatemeh, Arani, Mahshid Shabani
Format: Journal Article
Language:English
Published: Cham Springer International Publishing 01.01.2025
Springer Nature B.V
SpringerOpen
Subjects:
Advance phase
Aquatic Pollution
Clay
Clay loam
Comparative Law
Correlation
Earth and Environmental Science
Earth Sciences
Furrow irrigation
High flow
Hydrogeology
Industrial and Production Engineering
Inflow
International & Foreign Law
Irrigation
Loam
Manning roughness coefficient
Mannings equation
Moisture content
Nanotechnology
Original Article
Parameter identification
Parameters
Phases
Private International Law
Roughness
Roughness coefficient
SIPAR_ID
Soil moisture
Soil texture
Statistical analysis
Statistical tests
Storage phase
Temporal variations
Waste Water Technology
Water Industry/Water Technologies
Water Management
Water Pollution Control
WinSRFR
Manning roughness coefficient
SIPAR_ID
Advance phase
Storage phase
WinSRFR
ISSN:2190-5487, 2190-5495
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This research aimed to ascertain the Manning roughness coefficient ( n ) and explore the impact of various factors on it across different phases and irrigation events. The Manning’s n for furrow irrigation was determined in the advance, storage, and whole irrigation phases utilizing the SIPAR_ID model, Manning equation, and WinSRFR software, respectively. Parameters affecting the Manning’ n were identified through Pearson and Kendall tests. The study involved measuring the Manning’s n under six distinct inflow rates, classified as low and high flows. Three irrigation events (first to third), advance and storage phases, two irrigation intervals, and two soil textures (Clay loam and Silty clay loam) were considered. Results indicated that the Manning’s n ranged from 0.017 to 0.636, 0.015 to 0.317, and 0.015 to 0.34 in the advance, storage, and whole irrigation phases during the first to third irrigation events, with mean values of 0.083, 0.054, and 0.055, respectively. Higher roughness coefficients were observed in the advance phase. Additionally, findings suggested that if the advance phase is short relative to the total irrigation time, the Manning’s n from the advance phase can be applied to the whole irrigation event without separate consideration for storage phase roughness. Pearson and Kendall statistical tests revealed that the Manning roughness coefficient during the entire irrigation event was strongly correlated with advance time (r = 0.65, p  < 0.01) and moderately correlated with inflow and outflow rates, as well as initial soil moisture and cross-sectional flow area. A weak correlation was observed between the roughness coefficient and the furrow slope (r = 0.238). During the storage phase, advance time had the strongest positive correlation with roughness, while inflow rate had a weak negative correlation (r = −0.31).
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:2190-5487
2190-5495
DOI:10.1007/s13201-024-02334-9