Tabular Iceberg Draft Checker

Observedtabularicebergdraftversusidealuniformhydrostaticdensityexpectedvalue,signedmismatchnot stability/groundingdiagnosis. Actual independent units,calibration,measurement definitions/coverage and model applicability;not a climate forecast,causal determination,geodesy operation or safe travel/design approval.

Description

Uniform hydrostatic flotation predicts draft from total thickness and relative ice and water densities.

Uniform hydrostatic flotation predicts draft from total thickness and relative ice and water densities.^[1]

Comparing that estimate with observed draft gives a signed geometric discrepancy.

When to use Tabular Iceberg Draft Checker

Use this tool to apply the stated tabular iceberg draft checker operation with an explicit input and unit basis.

How to use Tabular Iceberg Draft Checker and how it works

Establish the measurement basis and units described above.
Enter actualMeasuredDraft, actualMeasuredTotalThickness, callerActualIceDensity, callerActualWaterDensity, callerIndependentDraftTolerance and run the tool.
Read result.hydrostaticExpectedDraft, result.signedDraftDiscrepancy, result.withinCallerDraftTolerance using the output meanings below.
If input is rejected, correct the stated type, range, ordering or alignment issue and rerun; review successful results under the declared convention.

Input field	Meaning	Value type	Requirement
actualMeasuredDraft	Measured draft, on the basis specified in the algorithm.	number	required; finite; nonnegative; further conditions in the algorithm
actualMeasuredTotalThickness	Measured total thickness, on the basis specified in the algorithm.	number	required; finite; nonnegative; further conditions in the algorithm
callerActualIceDensity	Ice density, on the basis specified in the algorithm.	number	required; finite; strictly positive; further conditions in the algorithm
callerActualWaterDensity	Water density, on the basis specified in the algorithm.	number	required; finite; strictly positive; further conditions in the algorithm
callerIndependentDraftTolerance	Draft tolerance, on the basis specified in the algorithm.	number	required; finite; nonnegative; further conditions in the algorithm

Require positive ice and water density with ice less dense, nonnegative thickness, draft and tolerance, and draft no greater than thickness. Return predicted draft, actual minus predicted and an inclusive tolerance flag.

expected draft = H ρice/ρwater; within = abs(actual−expected) ≤ tolerance

Apply the declared units, ordering and branch conditions.

Output field	Meaning	Value type
result	Object containing the declared output fields.	object
result.hydrostaticExpectedDraft	Ideal draft in the measured thickness unit.	number
result.signedDraftDiscrepancy	Actual minus ideal draft in the same length unit.	number
result.withinCallerDraftTolerance	True when absolute draft discrepancy is at most the supplied tolerance.	boolean

json

{
  "input": {
    "actualMeasuredDraft": 4,
    "actualMeasuredTotalThickness": 10,
    "callerActualIceDensity": 500,
    "callerActualWaterDensity": 1000,
    "callerIndependentDraftTolerance": 0.1
  },
  "output": {
    "result": {
      "hydrostaticExpectedDraft": 5,
      "signedDraftDiscrepancy": -1,
      "withinCallerDraftTolerance": false
    }
  }
}

Limitations and assumptions

The output applies the declared operation to the values you supply. Establish the measurement basis, units, coefficients and any caller-selected rules before interpreting it. The tool does not independently collect or verify observations or decide whether a model or reference applies. The simplified geometry or force calculation does not establish structural capacity, flotation stability or safe travel conditions.

Supply explicit required fields with the documented types and dense aligned arrays. Unknown fields, wrong types and nonfinite numbers are rejected. Branch-specific constraints are explained above. A successful false boolean, negative signed difference, empty slice or unresolved tie is distinct from an input error. Very large inputs or outputs may be rejected by shared resource limits.

Alternative or Complementary methods

For a related operation, use Thickness From Volume Area Scaling Calculator. A volume–area scaling relation can imply conditional mean glacier thickness by dividing modeled volume by area.

For a related operation, use Flotation Thickness Draft Calculator. A floating uniform slab's measured draft can imply its total thickness when ice and water densities are known.

References

Tabular Iceberg Draft Checker — tool.io

Similar or alternative tools

Thickness From Volume Area Scaling Calculator
A volume–area scaling relation can imply conditional mean glacier thickness by dividing modeled volume by area.
Flotation Thickness Draft Calculator
A floating uniform slab's measured draft can imply its total thickness when ice and water densities are known.