Geology Landslide Volume Calculator
Actual matched pre/post survey-cell removal AND deposition; overlapping cells excluded by caller, no depth×area proxy. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Description
Differencing aligned pre-event and post-event surface heights gives signed change within each measured cell.
Differencing aligned pre-event and post-event surface heights gives signed change within each measured cell.1
Separating positive removal from negative accumulation retains the distinction between displaced volume and net surface change. Use this tool to calculate landslide volume from the supplied measurements and assumptions.
When to use Geology Landslide Volume Calculator
Use this tool to calculate landslide volume from the supplied measurements and assumptions. Establish the measurement units, sampled interval, calibration or model edition and geological assumptions before entering data.
How to use Geology Landslide Volume Calculator and understand its results
- Establish the measurement units, sampled interval, calibration or model edition and geological assumptions before entering data.
- Enter surveyCellAreasM2, preSlideElevationsM, postSlideElevationsM, using the field meanings and rules below, then run the tool.
- Read observedRemovalM3, observedAccumulationM3, signedNetRemovalM3. Interpret the fields using their units, signs and evidence conventions below.
- If input validation fails, correct the reported field and run again. Before applying the result, check reference scope, model assumptions and any missing evidence or placeholder values.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| surveyCellAreasM2 | Survey cell areas m2 | list of number | Required |
| preSlideElevationsM | Pre slide elevations m | list of number | Required |
| postSlideElevationsM | Post slide elevations m | list of number | Required |
Enter nonempty aligned positive cell areas and finite pre/post elevations on the same datum. Multiply area by pre-minus-post height. Sum positive contributions as removal, absolute negative contributions as accumulation and all signed contributions as net removal. Return cubic meters without reconstructing a slide shape.
cellChange_i=area_i×(pre_i−post_i); removal=Σmax(change,0); accumulation=Σmax(−change,0); net=Σchange Use the exact units, boundary rules, ordering and missing-evidence conventions above.
| Output field | Meaning | Value type |
|---|---|---|
| observedRemovalM3 | Observed Removal M3; follow the units, sign, ordering and evidence convention stated above | number |
| observedAccumulationM3 | Observed Accumulation M3; follow the units, sign, ordering and evidence convention stated above | number |
| signedNetRemovalM3 | Signed Net Removal M3; follow the units, sign, ordering and evidence convention stated above | number |
{
"input": {
"surveyCellAreasM2": [
2,
3
],
"preSlideElevationsM": [
10,
20
],
"postSlideElevationsM": [
8,
21
]
},
"output": {
"observedRemovalM3": 4,
"observedAccumulationM3": 3,
"signedNetRemovalM3": 1
}
}Limitations and assumptions
Separating positive removal from negative accumulation retains the distinction between displaced volume and net surface change. Interpretation depends on the units, sampling scope and exact model described above.
All listed fields require explicit values. Unexpected fields, incorrect types, nonfinite numbers and sparse evidence arrays fail validation; the specific bounds and alignment requirements are stated above. Extremely large inputs or outputs can also be rejected. An input error is distinct from a successful result reporting false, no matches or missing evidence.
Alternative or Complementary methods
Use Geology Subsidence Bowl Volume Calculator for this related task: An axisymmetric subsidence bowl can be integrated from radial displacement measurements.
Use Geology Geomechanics Mohr Coulomb Cohesion From Hoek Brown Calculator when its separate inputs and assumptions fit the question: An equivalent Mohr–Coulomb envelope can be fitted over a selected confining-stress interval.
References
-
Geology Landslide Volume Calculator — tool.io
Similar or alternative tools
- Geology Subsidence Bowl Volume Calculator
An axisymmetric subsidence bowl can be integrated from radial displacement measurements.
- Geology Geomechanics Mohr Coulomb Cohesion From Hoek Brown Calculator
An equivalent Mohr–Coulomb envelope can be fitted over a selected confining-stress interval.