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Related Experiment Video

Updated: Jul 12, 2026

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

Insular erosion, isostasy, and subsidence.

H W Menard

    Science (New York, N.Y.)
    |May 27, 1983
    PubMed
    Summary

    Island subsidence is linked to reef presence and size, not just crustal age. Barrier reefs protect islands from erosion, altering their sinking rates compared to oceanic crust.

    Area of Science:

    • Geology
    • Oceanography
    • Geophysics

    Background:

    • Sea level changes and island erosion provide records of vertical land movement.
    • Island subsidence rates can differ from surrounding oceanic crustal movements.

    Purpose of the Study:

    • To investigate the factors influencing island subsidence, specifically the role of barrier reefs and erosion.
    • To reconstruct the vertical movement history of islands and adjacent seafloor.

    Main Methods:

    • Analyzing coral thickness as an indicator of subsidence.
    • Reconstructing island vertical movement from geological records (organic reefs, shore erosion).

    Main Results:

    • Islands with barrier reefs exhibit subsidence patterns similar to youthful crust, irrespective of actual age.

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    Use of Principal Components for Scaling Up Topographic Models to Map Soil Redistribution and Soil Organic Carbon
    09:44

    Use of Principal Components for Scaling Up Topographic Models to Map Soil Redistribution and Soil Organic Carbon

    Published on: October 16, 2018

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    Last Updated: Jul 12, 2026

    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

    Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling
    06:55

    Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling

    Published on: August 5, 2016

    Use of Principal Components for Scaling Up Topographic Models to Map Soil Redistribution and Soil Organic Carbon
    09:44

    Use of Principal Components for Scaling Up Topographic Models to Map Soil Redistribution and Soil Organic Carbon

    Published on: October 16, 2018

  • Reefless islands only subside after erosion truncates them.
  • Isostatic uplift from erosion is balanced by thermal subsidence, but barrier reefs prevent this by inhibiting erosion.

    • Conclusions:

    • Island subsidence is influenced by island size and the presence of reefs, not solely by crustal age.
    • Barrier reefs play a crucial role in modifying subsidence by preventing erosion and preserving island structures.