Sector Collapse Scarp Volume Estimate Calculator
Integrate independently mapped scarp source sections and explicit bulking scenario, not area-times-uniform-thickness deposit tool or future collapse prediction. Caller independently establishes units, regime, calibration and applicability; this does not establish design-code compliance, authenticity, operational safety, treatment efficacy or a validated forecast.
Description
Source scarps and avalanche deposits describe different parts of a collapse.
Source scarps and avalanche deposits describe different parts of a collapse.1
Integrating mapped source cross sections gives a source volume; multiplying by a supplied bulking ratio creates a separate deposit scenario.
When to use Sector Collapse Scarp Volume Estimate Calculator
Use this tool when you need to reproduce the stated calculation from measured records or independently selected model inputs. Prepare matched observations and independently established site, specimen, units, datum, and calibration context.
How to use Sector Collapse Scarp Volume Estimate Calculator and understand its results
- Prepare matched observations and independently established site, specimen, units, datum, and calibration context.
- Enter observedScarpCrossSectionStationsM, observedScarpCrossSectionAreasM2, callerIndependentSourceToDepositBulkingRatio, following the field table and rules below, then run the tool.
- Read observedSourceScarpVolumeM3, callerBulkedDepositScenarioM3. Use the output meanings below to interpret units, signs, flags, and any nested result fields.
- Correct reported input issues and run again. For a successful result, check the stated evidence coverage and assumptions before using it in your review.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| observedScarpCrossSectionStationsM | Observed scarp cross section stations m | list of number | Required |
| observedScarpCrossSectionAreasM2 | Observed scarp cross section areas m2 | list of number | Required |
| callerIndependentSourceToDepositBulkingRatio | Caller independent source to deposit bulking ratio | number | Required |
Use at least two strictly increasing nonnegative station coordinates in metres and aligned nonnegative cross-sectional areas in square metres. Integrate adjacent sections with the trapezoidal rule, then multiply by a positive independently supplied source-to-deposit bulking ratio.
V_source = Σ((x_(i+1)−x_i) × (A_i+A_(i+1))/2); V_scenario = V_source × bulkingRatio Symbols follow the input and output meanings and the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| observedSourceScarpVolumeM3 | Observed source scarp volume m3 | number |
| callerBulkedDepositScenarioM3 | Caller bulked deposit scenario m3 | number |
{
"input": {
"observedScarpCrossSectionStationsM": [
0,
1,
3
],
"observedScarpCrossSectionAreasM2": [
1,
2,
0
],
"callerIndependentSourceToDepositBulkingRatio": 2
},
"output": {
"observedSourceScarpVolumeM3": 3.5,
"callerBulkedDepositScenarioM3": 7
}
}Limitations and assumptions
Interpretation requires independently matched observations, units, site or specimen, and calibration. The calculation does not establish geological identity, operating safety, or an eruption forecast.
Missing required fields, unknown fields, wrong types, and violated calculation rules are input issues. Numeric values must be finite; nonfinite results are rejected. Evidence arrays must be dense, with no missing cells. Numeric observation lists allow at most 10,000 entries, subject to any smaller bounds stated above.
Alternative or Complementary methods
For a related review, use Volcanic Debris Avalanche Volume Calculator: A mapped avalanche deposit can vary in thickness across its footprint. Cell areas and lower and upper thickness estimates preserve a volume interval instead of assuming one uniform slab. For a complementary step, use Hazard Zone Radius Population Exposure Calculator: Population exposure within a documented hazard zone requires a population distribution and mapped overlap. This calculator combines already established exposure fractions and records how much population remains unassessed.
References
Similar or alternative tools
- Volcanic Debris Avalanche Volume Calculator
A mapped avalanche deposit can vary in thickness across its footprint. Cell areas and lower and upper thickness estimates preserve a volume interval instead of assuming one uniform slab.
- Hazard Zone Radius Population Exposure Calculator
Population exposure within a documented hazard zone requires a population distribution and mapped overlap. This calculator combines already established exposure fractions and records how much population remains unassessed.