Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Quality of Water01:19

Quality of Water

757
In concrete preparation, the quality of water is paramount as it affects the strength and durability of the concrete. Potable water is usually preferred; however, it must not have excessive sodium or potassium to prevent compromising the concrete's integrity. Water quality is typically evaluated based on impurities such as dissolved solids, chlorides, and sulfates, and its pH value is ideally between 6 and 8. Even slightly acidic natural water may be acceptable unless it contains harmful...
757
Freshwater Microbial Ecology01:24

Freshwater Microbial Ecology

66
Freshwater systems such as streams, rivers, and lakes exhibit distinct physical and biological characteristics that influence their microbial communities. These environments are broadly categorized into lotic systems—those with flowing waters like streams and most rivers—and lentic systems, which include still or slow-moving waters such as lakes, ponds, and marshes.In lentic systems, phytoplankton drive primary production, generating autochthonous organic carbon. In contrast, lotic...
66
Testing Water Quality01:14

Testing Water Quality

634
When the quality of water for concrete preparation is uncertain, its impact on the setting time of cement and compressive strength of mortar is assessed by comparison with de-ionized or distilled water benchmarks. American Society for Testing and Materials (ASTM) C1602 requires the setting times to be within 90 minutes of the control, British Standard (BS) 3146:1980 allows a 30-minute variance in the initial setting, while British Standards European Norm (BS EN) 1008 specifies initial setting...
634
Gravimetry: Overview01:05

Gravimetry: Overview

11.9K
Gravimetric analysis is a quantitative method where the analyte is isolated and weighed directly or after conversion into a substance of known composition. Gravimetric analysis can be classified as precipitation, electrogravimetry, volatilization, and particulate gravimetry, based on the method used to isolate the analyte.
In precipitation gravimetry, the analyte is converted into a precipitate and weighed. For example, the silver content in a sample can be estimated by precipitating and...
11.9K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Effectiveness of out-patient based acute heart failure care: a pilot randomised controlled trial.

Acta cardiologica·2023
Same author

Normalized Mutual Information of phonetic sound to distinguish the speech of Parkinson's disease.

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference·2020
Same author

A comparative assessment of the curative potential of reduced intensity allografts in acute myeloid leukaemia.

Leukemia·2014
Same author

Diffuse intrinsic pontine glioma treated with prolonged temozolomide and radiotherapy--results of a United Kingdom phase II trial (CNS 2007 04).

European journal of cancer (Oxford, England : 1990)·2013
Same author

Standard- or high-dose oxytocin for nulliparous women with confirmed delay in labour: quantitative and qualitative results from a pilot randomised controlled trial.

BJOG : an international journal of obstetrics and gynaecology·2013
Same author

Pharmacokinetic and clinical evaluation of liquid L-dopa/carbidopa in Parkinson's disease.

Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia·2008

Related Experiment Video

Updated: May 5, 2026

Watershed Planning within a Quantitative Scenario Analysis Framework
12:44

Watershed Planning within a Quantitative Scenario Analysis Framework

Published on: July 24, 2016

7.7K

Landsat and limnologically derived water quality data: A perspective.

A Howman1, D Grobler, P Kempster

  • 1Hydrological Research Institute, Private Bag X313, 0001, Pretoria.

Environmental Monitoring and Assessment
|November 19, 2013
PubMed
Summary

This study shows that using Landsat satellite data can accurately estimate median chlorophyll concentrations in reservoirs. This remote sensing approach provides a broader spatial understanding of chlorophyll distribution compared to traditional fixed station sampling.

More Related Videos

Soil Lysimeter Excavation for Coupled Hydrological, Geochemical, and Microbiological Investigations
10:30

Soil Lysimeter Excavation for Coupled Hydrological, Geochemical, and Microbiological Investigations

Published on: September 11, 2016

10.3K
Continuous Instream Monitoring of Nutrients and Sediment in Agricultural Watersheds
12:50

Continuous Instream Monitoring of Nutrients and Sediment in Agricultural Watersheds

Published on: September 26, 2017

10.2K

Related Experiment Videos

Last Updated: May 5, 2026

Watershed Planning within a Quantitative Scenario Analysis Framework
12:44

Watershed Planning within a Quantitative Scenario Analysis Framework

Published on: July 24, 2016

7.7K
Soil Lysimeter Excavation for Coupled Hydrological, Geochemical, and Microbiological Investigations
10:30

Soil Lysimeter Excavation for Coupled Hydrological, Geochemical, and Microbiological Investigations

Published on: September 11, 2016

10.3K
Continuous Instream Monitoring of Nutrients and Sediment in Agricultural Watersheds
12:50

Continuous Instream Monitoring of Nutrients and Sediment in Agricultural Watersheds

Published on: September 26, 2017

10.2K

Area of Science:

  • Environmental Science
  • Remote Sensing
  • Water Quality Monitoring

Background:

  • Fixed station sampling is conventional for reservoir water quality but may not represent ambient conditions.
  • Chlorophyll concentrations, crucial for water quality, exhibit patchy spatial distributions, challenging fixed-site monitoring.
  • This study addresses the limitations of fixed station sampling for water quality variables like chlorophyll.

Purpose of the Study:

  • To investigate the use of Landsat reflectance data for estimating median chlorophyll concentrations in Roodeplaat Dam.
  • To compare chlorophyll estimates derived from satellite data with those from traditional fixed station sampling.
  • To assess the spatial distribution information provided by Landsat-derived chlorophyll data.

Main Methods:

  • A linear polynomial regression model was developed to estimate chlorophyll from Landsat reflectance data.
  • The model was calibrated using two approaches: individual calibration with data from seven fixed stations during a satellite overflight, and a generalized calibration using pooled data from five overflights.
  • Water quality data from fixed stations were collected concurrently with satellite overflights.

Main Results:

  • Median chlorophyll concentrations estimated from Landsat data were comparable to those from fixed station data.
  • Landsat-derived estimates revealed a considerably larger range of chlorophyll concentrations than fixed station data.
  • Landsat data provided valuable insights into the spatial distribution of chlorophyll within the reservoir.

Conclusions:

  • Landsat reflectance data offer a viable and effective method for estimating median chlorophyll concentrations in reservoirs.
  • Remote sensing with Landsat provides a more comprehensive spatial overview of chlorophyll distribution than fixed station sampling.
  • This approach enhances water quality monitoring by capturing spatial variability often missed by traditional methods.