# Earthquakes: stations

A thematic map of the Atlas of Switzerland, the national atlas published by ETH Zurich. The map is drawn in the browser; this file describes it and lists its variants and links, but not the data values shown on the map.

- Map: https://atlasderschweiz.ch/en/theme/earthquakes-stations/
- Map id: 422
- Categories: Nature and Environment › Geology and raw materials › Earthquakes
- Keywords: Geology, Seismic activity
- Published: 2016-11-14
- Last revised: 2022-02-03
- Content language: English
- Other languages: [Deutsch](https://atlasderschweiz.ch/de/thema/erdbeben-stationen.md), [Français](https://atlasderschweiz.ch/fr/theme/seisme-stations.md), [Italiano](https://atlasderschweiz.ch/it/tema/terremoti-stazioni.md)

## Description

*Seismological Network*
To monitor earthquake activity in Switzerland and neighboring areas the SED is maintaining a highly sensitive digital broadband network (SDSNet: Swiss Digital Seismic Network). Because the seismometers used in the system are of extremely high sensitivity in order to detect even the slightest signals accurately the instruments are situated in remote locations and are placed on solid rock. All data is transmitted continuously to the SED data center in Zurich. There the data is constantly evaluated and archived, by hand if need be. The data stored per year amounts to approximately 700 Gbyte.

Apart from the high-sensitivity SDSNet the SED is maintaining a nation-wide network of hundred strong motion sensors (SSMNet: Swiss Strong Motion Network). These are able to record undistorted signals even from very strong earthquakes. They are concentrated in the seismically active regions of Switzerland. High-risk areas, such as the Valais region, Basel or other large agglomerations, are of particular interest. Strong motion sensors were also installed in some large dams across the country in cooperation with the Federal Energy Office and the operators of the large hydro power plants

## Sources

- Swiss Seismological Service (2016): [Earthquake Surveillance](http://www.seismo.ethz.ch/sed/mandate/index)

## Data sources

- Swiss National Network (CHNet): Swiss National Network (CHNet)

## Data owners

- [Swiss Seismological Service (SED)](http://www.seismo.ethz.ch/)

## Citation

The terms of use ask to name the Atlas of Switzerland and the data owners, and to keep the source references in exports, screenshots and embeds. Cite the map as:

> Atlas of Switzerland (2022): Earthquakes: stations. ETH Zürich. Map data © SED. https://atlasderschweiz.ch/en/theme/earthquakes-stations/

## Links

The map opens at its full extent; a link cannot set the map position.

- Map: https://atlasderschweiz.ch/en/theme/earthquakes-stations/
- Short link, stays valid when the title changes: https://atlasderschweiz.ch/en/t/422/
- Side by side with another map: https://atlasderschweiz.ch/en/comparison/?lt=422&rt={id of the other map}&ru={u of the other map, or leave out}

Embed in another website (allowed by the terms of use, as long as the source references stay visible):

```html
<iframe src="https://atlasderschweiz.ch/en/embed/?id=422&dm=e&ig=1" style="border:0;width:100%;height:600px;max-width:100%;" loading="lazy" title="Thematic map 'Earthquakes: stations' in the Atlas of Switzerland" allowfullscreen sandbox="allow-scripts allow-same-origin allow-popups" allow="geolocation" referrerpolicy="strict-origin-when-cross-origin"></iframe>
```

In the embed URL, `dm` sets what is shown: `e` the map with its title bar (default), `p` also the values of an object clicked on the map, `m` only the map with a button that opens it in the atlas. `ig=1` (default) lets the map react to scrolling and dragging only after a click into it, `ig=0` right away. The size can be changed in `style`.

For the use and citation of maps and data, see the [terms of use](https://atlasderschweiz.ch/en/terms-of-use/).