---
title: "Cross Helium Unrest"
method: POST
path: "/api/v1/cross-physics/helium-unrest"
---

# Cross Helium Unrest

`POST /api/v1/cross-physics/helium-unrest`

## Request

- Base URL: `https://www.deepmapai.com`
- URL: `https://www.deepmapai.com/api/v1/cross-physics/helium-unrest`
- Auth: none declared

Helium isotope volcanic unrest and eruption prediction.

Uses He-3/He-4 ratios, radon, CO2 flux, and geochemical features
to classify volcanic unrest and predict eruption timing.
Models: helium_unrest_clf.joblib, helium_eruption_reg.joblib.

## Headers

- `x-api-key` string

## Request body

- HeliumUnrestRequest: Helium isotope volcanic unrest / eruption prediction.
  - `lat` number: Site latitude
  - `lon` number: Site longitude
  - `He3_He4_ratio` number: 3He/4He ratio (Ra units)
  - `He4_concentration` number: He4 concentration (ppm)
  - `Rn222_concentration` number: Radon-222 (Bq/m^3)
  - `CO2_flux` number: CO2 flux (g/m^2/day)
  - `H2S_presence` integer: H2S detected (0/1)
  - `Temperature_gradient` number: Temperature gradient (C/km)
  - `pH` number: pH of fluid
  - `Dissolved_oxygen` number: Dissolved O2 (mg/L)
  - `Electrical_conductivity` number: Electrical conductivity (uS/cm)
  - `Soil_gas_flux` number: Soil gas flux
  - `Emanation_coefficient` number: Emanation coefficient
  - `Crustal_heat_flow` number: Crustal heat flow (mW/m^2)
  - `Distance_to_fault` number: Distance to nearest fault (km)
  - `Local_seismicity_rate` number: Local seismicity rate (events/day)
  - `Tidal_phase` number: Tidal phase (radians)
  - `use_demo` boolean

## Response `200`

Successful Response

- unknown

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/deepmapai/apis/deepmap-ai.md) · [All operations](https://skmtc.dev/deepmapai/apis/deepmap-ai/llms.txt) · [OpenAPI document](https://skmtc.dev/deepmapai/apis/deepmap-ai/revisions/dab995d977d0?raw)