Crevasse Depth Nye Zero Stress

Calculate ideal dry Nye crevasse depth 2·tensile stress/(rho·g); water pressure, fracture toughness, damage and finite geometry are excluded.

Description

A dry crevasse depth can be idealized by balancing tensile stress against ice overburden.

A dry crevasse depth can be idealized by balancing tensile stress against ice overburden. The Nye zero-stress approximation is a simplified geometry.

Calculate ideal dry Nye crevasse depth 2·tensile stress/(rho·g); water pressure, fracture toughness, damage and finite geometry are excluded.

When to use Crevasse Depth Nye Zero Stress

Use this for the following task: Calculate ideal dry Nye crevasse depth 2·tensile stress/(rho·g); water pressure, fracture toughness, damage and finite geometry are excluded.

Prepare the measurements and calibration parameters in the declared units. Keep vector entries aligned and choose a consistent spatial frame and time basis.

How to use Crevasse Depth Nye Zero Stress and understand its results

Prepare the measurements and calibration parameters in the declared units. Keep vector entries aligned and choose a consistent spatial frame and time basis.
Enter tensileStressPa, iceDensityKgPerM3, gravityMPerSecondSquared using the field table, then run the tool.
Read idealDryNyeCrevasseDepthM. Interpret flags, units, ordering and placeholder values using the rules below.
Review any reported issue or failed check, correct the supplied values when appropriate, and verify the result in its intended context.

Input field	Meaning	Value type and bounds	Requirement
tensileStressPa	Tensile stress pa	number	Required
iceDensityKgPerM3	Ice density kg per m3	number	Required
gravityMPerSecondSquared	Gravity m per second squared	number	Required

Use nonnegative tensile stress and positive density/gravity. Return the ideal depth in meters without clipping it to a supplied ice thickness.^[1]

dry depth = 2 tensileStress/(ρice g)

This summarizes the declared operation. Units, indexing, inclusivity and exceptional cases are explained in the surrounding text.

Output field	Meaning	Value type
idealDryNyeCrevasseDepthM	Ideal dry nye crevasse depth m	number

json

{
  "input": {
    "tensileStressPa": 90000,
    "iceDensityKgPerM3": 900,
    "gravityMPerSecondSquared": 10
  },
  "output": {
    "idealDryNyeCrevasseDepthM": 20
  }
}

Limitations and assumptions

Water pressure, fracture toughness, damage and finite glacier geometry are excluded.

Constants and empirical coefficients are supplied rather than calibrated. Check units and observational applicability before interpreting the model. Malformed requests produce input errors. A successfully evaluated request can still contain false flags, empty result lists or a result outside the supplied threshold; those outcomes have the meanings stated above.

Alternative or Complementary methods

Choose Basal Shear Stress for this operation: Calculate local slab driving and shape-corrected basal shear; longitudinal stress gradients and spatial force balance are excluded. For a complementary task, use Longitudinal Strain Rate for this operation: Estimate interval longitudinal normal strain rate from velocity gradients along a supplied flow transect; not transverse or tensor shear strain.

The implementation reference documents the exact calculation, supported input shapes and returned fields.

References

Crevasse Depth Nye Zero Stress — tool.io

Similar or alternative tools

Basal Shear Stress
Calculate local slab driving and shape-corrected basal shear; longitudinal stress gradients and spatial force balance are excluded.
Longitudinal Strain Rate
Estimate interval longitudinal normal strain rate from velocity gradients along a supplied flow transect; not transverse or tensor shear strain.