Volcanic Debris Avalanche Volume Calculator
Bound completed independently mapped avalanche deposit using explicit cell thickness intervals, not runout/hazard or single uniform slab volume. 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
A mapped avalanche deposit can vary in thickness across its footprint.
A mapped avalanche deposit can vary in thickness across its footprint.1
Cell areas and lower and upper thickness estimates preserve a volume interval instead of assuming one uniform slab.
When to use Volcanic Debris Avalanche Volume 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 Volcanic Debris Avalanche Volume Calculator and understand its results
- Prepare matched observations and independently established site, specimen, units, datum, and calibration context.
- Enter observedAvalancheDepositCellAreasM2, observedDepositThicknessLowerM, observedDepositThicknessUpperM, following the field table and rules below, then run the tool.
- Read observedDepositVolumeLowerM3, observedDepositVolumeUpperM3. 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 |
|---|---|---|---|
| observedAvalancheDepositCellAreasM2 | Observed avalanche deposit cell areas m2 | list of number | Required |
| observedDepositThicknessLowerM | Observed deposit thickness lower m | list of number | Required |
| observedDepositThicknessUpperM | Observed deposit thickness upper m | list of number | Required |
Enter aligned nonempty lists of positive cell areas in square metres and nonnegative thickness bounds in metres, with lower ≤ upper for each cell. Multiply each area by each corresponding thickness bound and sum separately. These are deposit bounds; source collapse and runout are separate questions.
V_lower = Σ(area_i × lower_i); V_upper = Σ(area_i × upper_i) Symbols follow the input and output meanings and the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| observedDepositVolumeLowerM3 | Observed deposit volume lower m3 | number |
| observedDepositVolumeUpperM3 | Observed deposit volume upper m3 | number |
{
"input": {
"observedAvalancheDepositCellAreasM2": [
10,
20
],
"observedDepositThicknessLowerM": [
1,
2
],
"observedDepositThicknessUpperM": [
2,
3
]
},
"output": {
"observedDepositVolumeLowerM3": 50,
"observedDepositVolumeUpperM3": 80
}
}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 Sector Collapse Scarp Volume Estimate Calculator: Source scarps and avalanche deposits describe different parts of a collapse. Integrating mapped source cross sections gives a source volume; multiplying by a supplied bulking ratio creates a separate deposit scenario. 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
- Sector Collapse Scarp Volume Estimate Calculator
Source scarps and avalanche deposits describe different parts of a collapse. Integrating mapped source cross sections gives a source volume; multiplying by a supplied bulking ratio creates a separate deposit scenario.
- 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.