https://github.com/samuel-rosa/prototype-runoff-sample-splitter

SAMUEL-ROSA, A.; MOURA-BUENO, J. M.; DALMOLIN, R. S. D. Replacing the (inefficient) manual runoff sampling method used in Brazil – a prototype sample splitter. Scientia Agricola, v. 78, n. 4, p. e20190117, 2021.
https://github.com/samuel-rosa/prototype-runoff-sample-splitter

erosion sampling soil ufsm

Last synced: 4 months ago
JSON representation

SAMUEL-ROSA, A.; MOURA-BUENO, J. M.; DALMOLIN, R. S. D. Replacing the (inefficient) manual runoff sampling method used in Brazil – a prototype sample splitter. Scientia Agricola, v. 78, n. 4, p. e20190117, 2021.

• Host: GitHub
• URL: https://github.com/samuel-rosa/prototype-runoff-sample-splitter
• Owner: samuel-rosa
• Created: 2017-09-28T17:56:26.000Z (over 8 years ago)
• Default Branch: master
• Last Pushed: 2020-06-02T01:59:24.000Z (about 6 years ago)
• Last Synced: 2025-10-24T20:41:28.822Z (8 months ago)
• Topics: erosion, sampling, soil, ufsm
• Language: TeX
• Homepage: https://doi.org/10.1590/1678-992X-2019-0117
• Size: 87.7 MB
• Stars: 0
• Watchers: 1
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

Awesome Lists containing this project

README

          
# Accuracy and variability of runoff sampling methods

Alessandro Samuel-Rosa[1\*], Jean Michel Moura-Bueno[2], Ricardo Simão Diniz Dalmolin[3]

[1] Universidade Tecnológica Federal do Paraná -- Prolongamento da Rua Cerejeira, s/n -- 85892-000 -- Santa 

Helena, PR -- Brasil.

[2] Universidade Federal de Pelotas -- Campus Universitário, s/n -- 96010-610 -- Capão do Leão, RS -- Brasil.

[3] Universidade Federal de Santa Maria -- Av. Roraima 1000, Prédio 42, Sala 3309 -- 97105-900 -- Santa Maria,

RS -- Brasil.

\* Corresponding author <>

__ABSTRACT__

The method used to obtain runoff samples in soil erosion monitoring studies is an important source of data 

variability. In this study, we evaluated the manual sampling method used in Brazil. We present as an

alternative the prototype of a sample splitter for suspensions with high concentration of total solids. Using

soil material with 583 g kg^-1^ of sand and 89 g kg^-1^ of clay, the manual method and the sample splitter were

tested for their ability to produce representative samples of suspensions with a concentration of 2, 10 and 50

g L ^-1^ of total solids. An underestimation of 30% or more of the concentration of total solids was observed

using the manual method, with a variation of the same magnitude (CV between 20 and 45%). The splitter was

efficient in producing samples representative of the suspension -- even without altering the particle size

distribution of the total solids. Both absolute percentage errors (|<5%|) and the variation between replicates

(CV <3%) were small. The problems with the manual method are due to the inefficient homogenization that

facilitates the differential sedimentation of the particles of different sizes. If these problems are also

found in other studies, then the prototype that we developed is a reasonable alternative.

__Keywords:__ Erosion monitoring, Soil loss, Sandy soil, Sample splitter, Uncertainty.

Manuscript submitted to [_Scientia Agricola_](sa) on 24-Apr-2019 and recommended for publication -- after two

revision rounds -- on 06-Oct-2019 under the title "Replacing the (inefficient) manual runoff sampling method

used in Brazil – a prototype sample splitter".

[sa]: http://www.scielo.br/scielo.php?script=sci_serial&pid=0103-9016&lng=en&nrm=iso