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

Gravimetry: Overview01:05

Gravimetry: Overview

6.2K
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...
6.2K
Precipitation Gravimetry01:03

Precipitation Gravimetry

6.8K
Precipitation gravimetry is based on converting an analyte into a sparingly soluble precipitate, which is separated by filtration and weighed. An ideal precipitate should be pure, insoluble, of known composition, and easily filtered from the reaction mixture.
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
6.8K
Variation in Acceleration due to Gravity near the Earth's Surface01:20

Variation in Acceleration due to Gravity near the Earth's Surface

2.5K
An object's apparent weight is its weight measured by a spring balance at its location. It is different from its true weight, the force with which the Earth pulls it, because of the Earth's rotation. Mathematically, an object's apparent weight equals its true weight minus the centripetal force that keeps it in a circular motion along with the Earth's surface every 24 hours.
The difference between the true and apparent weights is proportional to the square of the Earth's...
2.5K
Geoid and Ellipsoid01:28

Geoid and Ellipsoid

91
The Earth's shape is best described as an ellipsoid, a slightly flattened sphere created by rotating an ellipse around its minor axis. This flattening results in the polar axis being about 21 kilometers shorter than the equatorial axis. In contrast, the geoid represents the Earth's gravitational shape and aligns with the mean sea level (MSL). The geoid is an irregular equipotential surface where gravity is perpendicular at every point. Variations in Earth's mass distribution cause geoid...
91
Measuring Acceleration Due to Gravity01:12

Measuring Acceleration Due to Gravity

617
Consider a coffee mug hanging on a hook in a pantry. If the mug gets knocked, it oscillates back and forth like a pendulum until the oscillations die out.
A simple pendulum can be described as a point mass and a string. Meanwhile, a physical pendulum is any object whose oscillations are similar to a simple pendulum, but cannot be modeled as a point mass on a string because its mass is distributed over a larger area. The behavior of a physical pendulum can be modeled using the principles of...
617
Acceleration due to Gravity on Earth01:21

Acceleration due to Gravity on Earth

11.0K
According to Newton's law of gravitation, the gravitational force on a body is proportional to its mass. According to Newton's second law of motion, the acceleration produced by an external force is inversely proportional to the force. Hence, the acceleration of an object under an external force of gravitation is independent of its mass.
The acceleration of an object close to the Earth, because of the Earth's gravitational pull, is called the acceleration due to gravity. It is...
11.0K

You might also read

Related Articles

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

Sort by
Same author

In Situ Analytical Chemistry Laboratory for the Exobiology Extant Life Surveyor.

ACS measurement science au·2026
Same author

Subglacial water flow and ice dynamics during glacial lake outburst floods observed from space.

Nature communications·2026
Same author

Seasonal dynamics of Earth's glaciers and ice sheets.

Science (New York, N.Y.)·2025
Same author

Topographically-controlled contribution of avalanches to glacier mass balance in the 21st century.

Nature communications·2025
Same author

Detection of 85 new active subglacial lakes in Antarctica from a decade of CryoSat-2 data.

Nature communications·2025
Same author

Poleward shift of subtropical highs drives Patagonian glacier mass loss.

Nature communications·2025

Related Experiment Video

Updated: Aug 15, 2025

Laser-Induced Fluorescence Emission L.I.F.E. as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats
13:38

Laser-Induced Fluorescence Emission L.I.F.E. as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats

Published on: October 26, 2019

8.0K

Measuring glacier mass changes from space-a review.

Etienne Berthier1, Dana Floriciou2, Alex S Gardner3

  • 1LEGOS, Université de Toulouse, CNES, CNRS, IRD, UPS, Toulouse, France.

Reports on Progress in Physics. Physical Society (Great Britain)
|January 3, 2023
PubMed
Summary

Glacier mass loss significantly impacts Earth and water resources. This review details space-based measurement techniques and highlights discrepancies, emphasizing the need for inter-comparison studies to refine sea-level rise projections.

Keywords:
SAR interferometryaltimetryglaciergravimetrysatellitesea-level risestereo-images

More Related Videos

Simulating Impacts of Ice Storms on Forest Ecosystems
06:27

Simulating Impacts of Ice Storms on Forest Ecosystems

Published on: June 30, 2020

7.1K
Measuring and Mapping Patterns of Soil Erosion and Deposition Related to Soil Carbonate Concentrations Under Agricultural Management
08:09

Measuring and Mapping Patterns of Soil Erosion and Deposition Related to Soil Carbonate Concentrations Under Agricultural Management

Published on: September 12, 2017

11.9K

Related Experiment Videos

Last Updated: Aug 15, 2025

Laser-Induced Fluorescence Emission L.I.F.E. as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats
13:38

Laser-Induced Fluorescence Emission L.I.F.E. as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats

Published on: October 26, 2019

8.0K
Simulating Impacts of Ice Storms on Forest Ecosystems
06:27

Simulating Impacts of Ice Storms on Forest Ecosystems

Published on: June 30, 2020

7.1K
Measuring and Mapping Patterns of Soil Erosion and Deposition Related to Soil Carbonate Concentrations Under Agricultural Management
08:09

Measuring and Mapping Patterns of Soil Erosion and Deposition Related to Soil Carbonate Concentrations Under Agricultural Management

Published on: September 12, 2017

11.9K

Area of Science:

  • * Glaciology and Earth Observation Science
  • * Climate Change Research
  • * Cryospheric Studies

Background:

  • * Non-ice sheet glaciers are rapidly losing mass, affecting global sea levels and regional water availability.
  • * Glacier meltwater is a critical factor in sea-level rise and hydrological resource management, particularly in arid regions.
  • * Understanding glacier mass change is crucial for predicting future environmental impacts.

Purpose of the Study:

  • * To review space-based techniques for measuring glacier mass change over the past two decades.
  • * To assess the strengths and weaknesses of different methodologies.
  • * To identify discrepancies in mass change estimates and their implications.

Main Methods:

  • * Digital Elevation Model (DEM) differencing using stereo-imagery.
  • * Synthetic Aperture Radar Interferometry (InSAR).
  • * Satellite laser and radar altimetry.
  • * Space gravimetry.

Main Results:

  • * Demonstrated strengths and weaknesses of various techniques using Vatnajökull Ice Cap and Everest glaciers.
  • * Identified significant discrepancies (20%-30%) in global mass change estimates due to differing methodologies and research groups.
  • * Highlighted variability in technique application across different geographical contexts.

Conclusions:

  • * Space-based methods provide essential data for monitoring glacier mass balance.
  • * Inter-comparison studies are crucial to resolve discrepancies and improve accuracy.
  • * Accurate glacier mass change data is vital for constraining sea-level rise contributions and regional water resource assessments.