---
title: "Gnss Strain"
method: POST
path: "/api/v1/gnss/strain"
tags: ["GNSS Deformation Analysis"]
---

# Gnss Strain

`POST /api/v1/gnss/strain`

## Request

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

Compute 2D strain rate tensor from GNSS station velocities.

Uses least-squares inversion of the velocity gradient tensor
to compute the strain rate field including principal strains,
dilatation, maximum shear, and rotation rate. Requires >= 3
stations.

Parameters (JSON body):
- station_lat : list[float] -- Station latitudes (degrees)
- station_lon : list[float] -- Station longitudes (degrees)
- north_vel : list[float] -- North velocity components (mm/yr)
- east_vel : list[float] -- East velocity components (mm/yr)

Returns strain rate tensor components in nanostrain/yr, principal
strains, dilatation, max shear, and rotation rate.

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

## Query parameters

- `x_api_key` string, nullable

## Request body

- object

## 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)