---
title: "Get Eruption source parameter database queryables"
method: GET
path: "/collections/eruption-source-parameter/queryables"
tags: ["eruption-source-parameter"]
---

# Get Eruption source parameter database queryables

`GET /collections/eruption-source-parameter/queryables`

The eruption source parameter database contains information on those parameters most frequently used in the initiation of ash-dispersion models. The database was originally published as a special USGS report in 2009 [Mastin et al., 2009a], and has since been converted to a searchable database.

## Query parameters

- `properties` string[]
- `f` 'json' | 'html' | 'jsonld'
- `profile` 'actual-domain' | 'valid-domain'
- `lang` 'en-US'

## Response `200`

successful queryables operation

- Queryables
  - `queryables` Queryable[], required
    - `description` string — a human-readable narrative describing the queryable
    - `language` string — the language used for the title and description
    - `queryable` string, required — the token that may be used in a CQL predicate
    - `title` string — a human readable title for the queryable
    - `type` string, required — the data type of the queryable
    - `type-ref` string, url — a reference to the formal definition of the type

## Other responses

- `400` — unresolved $ref
- `404` — unresolved $ref
- `500` — unresolved $ref

---

[API](https://skmtc.dev/bgs/apis/opengeoscience-ogcapi.md) · [All operations](https://skmtc.dev/bgs/apis/opengeoscience-ogcapi/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/bgs/opengeoscience-ogcapi/revisions/98c98c759f90/schema)