Record Details

Manual for Operation of Mini Secchi Disc and the Mobile App TurbAqua Developed as Part of Revival Project

CMFRI Repository

View Archive Info
 
 
Field Value
 
Relation http://eprints.cmfri.org.in/14277/
 
Title Manual for
Operation of Mini
Secchi Disc and the
Mobile App TurbAqua
Developed as Part of
Revival Project
 
Creator Brewin, Bob
Brewin, Tom
Sathyendranath, Shubha
Platt, Trevor
Racault, Marie-Fanny
George, Grinson
Menon, Nandini
Abdulaziz, Anas
Lal, Anju
Varghese, Anu
Pranav, P
Sajhunneesa, T
 
Subject Mariculture
 
Description The Secchi disc measures transparency of water
bodies in a fast, easy and precise way. The Secchi disc
is a white disc that is lowered into the water and the
depth at which this disc disappears from sight is logged
as Secchi depth in the App. Transparency is the depth
at which disc reappears, i.e., or how deep the sunlight
can penetrate into a lake. The mini Secchi disc is
basically a manually-operated tape measure with a
white Secchi 10 cm disk and a brass weight of 100g
attached to the tape end. The weight is manufactured
using a metal lathe and the disc is made of white
polypropylene sheet. The measuring tape is
approximately 8m long wrapped around a 3D printed
bobbin. For the easy handling of the device a
polypropylene finger strap and nylon lanyard are
attached to the casing. For prediction of colour of the
water body, a vinyl-laminated Forel Ule colour scale
sticker (with colour ranging from Indigo blue to Cola
brown) is placed on the outside of the casing and the
entire device is held together using stainless steel or
brass fixings. In addition to this, an i-Button housed in a
Thermochron water proof capsule ((DS9107) is
attached to one of the weights, designed for measuring
the water temperature.
 
Publisher Central Marine Fisheries Research Institute
 
Date 2019
 
Type Monograph
NonPeerReviewed
 
Format text
 
Language en
 
Identifier http://eprints.cmfri.org.in/14277/1/Manual%20for%20Operation%20of%20Mini%20Secchi%20Disc_2019_REVIVAL_Grinson%20George.pdf
Brewin, Bob and Brewin, Tom and Sathyendranath, Shubha and Platt, Trevor and Racault, Marie-Fanny and George, Grinson and Menon, Nandini and Abdulaziz, Anas and Lal, Anju and Varghese, Anu and Pranav, P and Sajhunneesa, T (2019) Manual for Operation of Mini Secchi Disc and the Mobile App TurbAqua Developed as Part of Revival Project. Manual. Central Marine Fisheries Research Institute, Kochi.