---
title: "Gnss Transients"
method: GET
path: "/api/v1/gnss/transients"
tags: ["GNSS Deformation Analysis"]
---

# Gnss Transients

`GET /api/v1/gnss/transients`

## Request

- Base URL: `https://www.deepmapai.com`
- URL: `https://www.deepmapai.com/api/v1/gnss/transients`
- Auth: none declared

Detect slow-slip and volcanic transient events from GNSS residuals.

Downloads position time series, removes secular velocity and
seasonal signals, then searches for transient deformation events
including slow-slip events, volcanic inflation/deflation, and
post-seismic relaxation.

Parameters
----------
station : str
    4-character GNSS station code (e.g. P649 for Cascadia).
days : int
    Duration of time series (default 730 = 2 years).
window_days : int
    Smoothing window for transient detection (days, default 30).
threshold_mm : float
    Minimum displacement for transient detection (mm, default 5).

**Pricing:** Included in subscription tiers (legacy list price: GET /api/v1/billing/pricing).

## Query parameters

- `station` string, required: 4-character GNSS station code (e.g. 'P649')
- `days` integer: Number of days of data (default 730)
- `window_days` integer: Smoothing window for transient detection (default 30)
- `threshold_mm` number: Detection threshold in mm (default 5)
- `x_api_key` string, nullable

## 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)