Seismic networks operated by ECGSThe history of seismological measurements in Luxembourg goes back to 1967, when the first seismological station became operational in the casemates of the City of Luxembourg, installed by Johnny Flick in collaboration with the Royal Observatory of Belgium. In 1975, a short-period seismic station was installed in the underground laboratory in Walferdange, and two further stations were added in Vianden and Kalborn in 1989 and 1992, respectively. In the framework of the GEOFON programme of the GFZ German Research Centre for Geosciences, a broadband station was installed in the underground laboratory in 1994. Today, ECGS operates two seismic networks, in collaboration with several international partner institutions. The first is designed to monitor seismic activity in and around Luxembourg, while the second one, operated in close collaboration with local institutions1, is dedicated to the seismic surveillance and scientific research of the Virunga Volcanic Province in eastern Democratic Republic of the Congo. All seismic stations transmit their data in real-time. Below, we provide a short description of the networks as well as access to the real-time status information and live seismograms of all stations. 1. The local partner institutions in the context of KivuSNet are: Goma Volcano Observatory; Centre de Recherche en Sciences Naturelles; Rwanda Natural Resources Authority; University of Burundi.
The Luxembourg Seismic Network (LuxSNet)LuxSNet was developed starting from the early sites of Walferdange, Vianden and Kalborn, with the intention to design a network adequate for the monitoring of potential seismic activity in Luxembourg and its surroundings. In addition, the LuxSNet seismic stations also register the seismic waves generated by major earthquakes around the World. LuxSNet currently consists of eight broadband and two short-period seismic stations. The broadband stations are equipped with Streckeisen STS-2 (station WLF) and Guralp CMG-3ESPC sensors, while stations VIA and KLB are equipped with short-period Lennartz instruments. All data from LuxSNet are transmitted in real-time to the ECGS data center located in our office building in Walferdange using a cellular network system. Some of the sites were first used in a temporary deployment carried out in collaboration with the Karlsruhe Institute of Technology (KIT) in the framework of the project LUXBB. All these sites have now been re-occupied with long-term deployments of ECGS-owned instruments.
The Kivu Rift Region Seismic Network (KivuSNet)The Kivu Rift region lies in the bordering region between the Democratic Republic of the Congo (DRC) and Rwanda in central Africa. This region is home to two of Africa’s most active volcanos, Nyiragongo and Nyamulagira, and threatened by an extraordinary combination of natural hazards (volcanic eruptions, earthquakes, landslides, etc.). Despite a scientifically unique setting and high hazard level, very limited and intermittent monitoring infrastructure existed in the region until recently, largely due to recurrent conflicts and ensuing the difficult working conditions in the area. Over the past years, a consortium of Belgian and Luxembourgian scientists, in collaboration with local partners from DRC, Rwanda and Burundi, continuously developed a dense broadband seismic (KivuSNet) and GNSS (KivuGNet) network in the region. KivuSNet is currently composed of 18 broadband seismic (Guralp CMG-3EPSC and Nanometrics Trillium Compact sensors) and three three-element infrasound arrays, while KivuGNet encompasses 16 GNSS stations, mostly co-located with seismic sensors. Real-time data streams are telemetered to the ECGS data center in Luxembourg and shared in real-time with the colleagues of the Goma Volcano Observatory in Goma and the Rwanda Natural Resources Authority in Kigali. These networks thus contribute directly to the surveillance activities of these hazardous volcanoes, while at the same time providing a unique dataset for scientific studies. These scientific activities are carried out through a range of dedicated projects and provide significant contributions to the improvement of our understanding not only on this specific volcanic system, but also on volcano-tectonic processes in general. More information on the Kivu Rift region and these projects can be found on the Virunga Volcanoes website.
Further readingPlease consult the following papers for further information on KivuSNet and KivuGNet:
Oth, A., J. Barrière, N. d'Oreye, G. Mavonga, J. Subira, N. Mashagiro, B. Kadufu, S. Fiama, G. Celli, JdD. Bigirande, A.J. Ntenge L. Habonimana, C. Bakundukize and F. Kervyn (2017). KivuSNet: The first dense broadband seismic network for the Kivu Rift region (Western branch of East African Rift). Seismol. Res. Lett., 88(1), 49-60, doi: 10.1785/0220160147. [PDF]
Geirsson H., N. d’Oreye, N. Mashagiro, M. Syauswa, G. Celli, B. Kadufu, B. Smets, and F. Kervyn (2017). Volcano-tectonic deformation in the Kivu Region, Central Africa: Results from six years of continuous GNSS observations of the Kivu Geodetic Network (KivuGNet). Journal of African Earth Sciences, 134, 809-823, doi: 10.1016/j.jafrearsci.2016.12.013.
Real-time status monitor and live seismograms
When clicking on the station code of the desired station in the left-hand column, the seedlink status of all streams and a vertical component seismogram of the last 24 hours will be shown. All live seismograms are filtered with a WWSSN short period filter. A guide for the interpretation of the seedlink status information can be found here.