Phreatomagmatic Maar Interaction Checker
Screen an upper-limit contacting-water vaporization budget including sensible/latent energy with a caller criterion; assumes all available heat transfers and cannot establish explosive phreatomagmatism or safe interaction.
Description
Vaporizing contacting water requires both sensible heating and latent energy.
Vaporizing contacting water requires both sensible heating and latent energy. An energy budget gives an upper-limit vaporized fraction.
Screen an upper-limit contacting-water vaporization budget including sensible/latent energy with a caller criterion; assumes all available heat transfers and cannot establish explosive phreatomagmatism or safe interaction.
When to use Phreatomagmatic Maar Interaction Checker
Use this tool to screen an upper-limit contacting-water vaporization budget including sensible/latent energy with a caller criterion; assumes all available heat transfers and cannot establish explosive phreatomagmatism or safe interaction.
Gather the relevant observations and fitted model parameters. Use the stated units and time basis; keep paired observations aligned.
How to use Phreatomagmatic Maar Interaction Checker and understand its results
- Gather the relevant observations and fitted model parameters. Use the stated units and time basis; keep paired observations aligned.
- Enter contactingWaterMassKg, availableMagmaHeatJoules, waterHeatingJoulesPerKg, waterVaporizationJoulesPerKg, callerMinimumVaporizedFraction using the field table and calculation rules, then run the tool.
- Read energyLimitedVaporizedWaterFraction, aboveCallerInteractionCriterion. The explanation below defines the units, signs, ordering and any flags or placeholder values.
- If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.
| Input field | Meaning | Value type; see rules below | Requirement |
|---|---|---|---|
| contactingWaterMassKg | Contacting water mass kg | number | Required |
| availableMagmaHeatJoules | Available magma heat joules | number | Required |
| waterHeatingJoulesPerKg | Water heating joules per kg | number | Required |
| waterVaporizationJoulesPerKg | Water vaporization joules per kg | number | Required |
| callerMinimumVaporizedFraction | Caller minimum vaporized fraction | number | Required |
Use positive water mass and vaporization energy, nonnegative heat and heating cost, and a comparison fraction in [0,1]. Cap the fraction at one and test at or above the supplied criterion.1
fraction = min(1,available heat/[water mass × (heating + vaporization energy per kg)]) Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| energyLimitedVaporizedWaterFraction | Energy limited vaporized water fraction | number |
| aboveCallerInteractionCriterion | Above caller interaction criterion | boolean |
{
"input": {
"contactingWaterMassKg": 10,
"availableMagmaHeatJoules": 10000000,
"waterHeatingJoulesPerKg": 100000,
"waterVaporizationJoulesPerKg": 2000000,
"callerMinimumVaporizedFraction": 0.5
},
"output": {
"energyLimitedVaporizedWaterFraction": 0.47619047619047616,
"aboveCallerInteractionCriterion": false
}
}Limitations and assumptions
Perfect heat transfer is assumed. The screen cannot establish explosive interaction or safety.
Numbers and computed results must be finite; overflow produces an error. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors. A successfully returned false flag is an evaluated outcome; its meaning is explained above.
Alternative or Complementary methods
Use Lahar Volume Crater Lake Breach: Balance released crater-lake water, initial water loss and dry sediment grains into initial lahar volume; pores are not double counted and downstream entrainment/inundation are not predicted. For a complementary task, use Limnic CO2 Overturn Nyos Risk Checker: Compare total caller Henry-equivalent gas pressure to local absolute hydrostatic confinement; this equilibrium supersaturation screen cannot establish lake overturn, nucleation, eruption probability or safety.
References
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Phreatomagmatic Maar Interaction Checker — tool.io
Similar or alternative tools
- Lahar Volume Crater Lake Breach
Balance released crater-lake water, initial water loss and dry sediment grains into initial lahar volume; pores are not double counted and downstream entrainment/inundation are not predicted.
- Limnic CO2 Overturn Nyos Risk Checker
Compare total caller Henry-equivalent gas pressure to local absolute hydrostatic confinement; this equilibrium supersaturation screen cannot establish lake overturn, nucleation, eruption probability or safety.