The federation
Intranet
Permanent Alpine GNSS network - RENAG Alps
**RENAG-Alpes : GNSS monitoring and observation services in the northern French Alps
***Scientific objectives
Continuous measurements of GNSS stations’ various positions throughout the Alps allow us to monitor the progressive deformation of the Alps. This deformation generates a moderate but persistent seismicity. Significant quantification (±0.1 mm/an) of this deformation requires high quality observations over long duration (min. 5-10 years).
Our second objective is to monitor tropospheric humidity. Permanent GNSS networks fill a persistant gap in meteorological observations of tropospheric humidity, mostly by assimilating GNSS tropospheric delays in the current weather forecast system at Météo France (3D‐VAR ALADIN and AROME, est. December 2008). GNSS tropospheric delays over time can also present constraints to the the climatology of tropospheric water vapor. GNSS reflectometry (currently in development) allows us to quantify local snow depth and ground humidity.
Finally, our sites provide a stable reference point for local measurements (e.g. land slides, glacier flow, cadaster, geo‐referencing, etc.).
***Implementation
Twenty active permanent GNSS stations exist as of March 2017. Inactive station: FCLZ.
| CODE (access log) | Locality | Position | Installation date | Photo | Position time series up to May 2014 | Remarks |
|---|---|---|---|---|---|---|
| ALPE | Alpe d’Huez, Isère | 45°05’N 6°05’E 1893 m | 30-10-2006 | 
Photo ALPE
|
TS ALPE
|
|
| ARGG | Argentière Glacier, Haute Savoie | 45°57’N 7°00’E 2728 m |
21-02-2007 |
Photo ARGG
|
Site on the glacier, non RENAG | |
| ARGR | Argentière Refuge, Haute Savoie | 45°56’N 7°00’E 2834 m |
28-06-2007 |
Photo ARGR
|
TS ARGR
|
Antenna re-installed several times |
| AVR1 | Avignonnet, Isère | 44°57’N 5°39’E 924 m |
05-12-2007 |
Photo AVR1
|
TS AVR1
|
Site OMIV |
| BANN | Fort de Banne, Ardèche | 44°22’N 4°09’E 416 m |
03-07-2003 |
Photo BANN
|
TS BANN
|
|
| CHAM | Chamrousse, Isère | 45°06’N 5°52’E 1874 m |
19-12-2003 |
Photo CHAM
|
TS CHAM
|
|
| CHMX | Chamonix, Haute Savoie | 45°55’N 6°52’E 1128 m |
29-06-2007 |
Photo CHMX
|
TS CHMX
|
|
| CHTL | Le Châtel, Savoie | 45°18’N 6°21’E 838 m |
14-04-1999 |
Photo CHTL
|
TS CHTL
|
|
| FCLZ | La Feclaz, Savoie | 45°38’N 5°59’E 1374 m |
04-06-1998 |
Photo FCLZ
|
TS FCLZ
|
stopped 04-01-2012 |
| GERL | Gerland, Isère | 44°52’N 5°29’E 1572 m | 16-07-2014 |
Photo GERL
|
Reflectometry, collaboration IGE | |
| JANU | Fort du Janus, Montgenèvre, Hautes Alpes | 44°54’N 6°42’E 2597 m |
14-10-2005 |
Photo JANU
|
TS JANU
|
|
| LEBE | Col de Lèbe, Ain | 45°54’N 5°37’E 940 m |
25-06-2005 |
Photo LEBE
|
TS LEBE
|
|
| LFAZ | Le Faz, Isère | 45°6’N 5°23’E 1078 m |
10-01-2005 |
Photo LFAZ
|
TS LFAZ
|
|
| MODA | Modane, Savoie | 45°12’N 6°42’E 1259 m |
16-10-1998 |
Plan MODA
|
TS MODA
|
management transmitted to Teria |
| NATT | Nattages, Ain | 45°42’N 5°45’E 380 m | 20-05-2016 |
Photo NATT
|
||
| OGAG | Argentière-la-Bessée, Hautes Alpes | 44°47’N 6°32’E 1260 m | 19-07-2011 |
Photo OGAG
|
TS OGAG
|
|
| PUYA | Puy Aillaud, Vallouise, Hautes Alpes | 44°51’N 6°28’E 1704 m |
30-11-2005 |
Photo PUYA
|
TS PUYA
|
|
| ROSD | Roselend, Savoie | 45°41’N 6°37’E 1703 m |
15-12-2005 |
Photo ROSD
|
TS ROSD
|
|
| SJDV | Saint Jean de Vignes, Rhône | 45°52’N 4°40’E 432 m |
10-10-1997 |
Photo SJDV
|
TS SJDV
|
|
| STEY | Fort du Saint Eynard, Isère | 45°14’N 5°45’E 1459 m |
27-05-2003 |
Photo STEY
|
TS STEY
|
|
| SURF | Fort de Saint Ours, Meyronnes, Alpes | 44°29’N 6°49’E 1820 m | 10-01-2017 |
Photo SURF
|
***Partners
The network RENAG-Alps contributes to the national observatory service RENAG, member of RESIF (French Seismologic and geodetic network).
***Financements
The service "Permanent GNSS" of OSUG corresponds to the Alpine component of SNO RENAG and is financed by INSU, IR RESIF and OSUG.
***Contact
Andrea WALPERSDORF
Anne SOCQUET
Nathalie COTTE
**RENAG : GNSS National Permanent Research Network, national observatory service of INSU, member of RESIF
This department coordinates the activities of research laboratories and governmental organisations through the acquisition and use of long-term permanent GNSS measurements in mainland France. RENAG is a member of the French Seismologic and Geodetic Network RESIF.