Major Hazards Specialised Centers
European and Mediterranean
Major Hazards Agreement
Accueil ECGS Seismic Studies Based on Data from the Luxembourg National Seismic Network
Luxembourg

Seismic Studies Based on Data from the Luxembourg National Seismic Network

Period2018 - 2019
Partners
Coordinator centre : European Center for Geodynamics and Seismology
 

Project background

During the past few years, ECGS worked towards building a national seismic network for Luxembourg. Until recently, Luxembourg disposed of only three permanent seismic stations. Even though Luxembourg is located in an area of very low seismic activity, an appropriate seismic monitoring network is nevertheless required to a) record ground motions and monitor the seismic activity in well-known seismogenic areas not far from Luxembourg’s territory, b) monitor anthropogenic events such as quarry blasts to be able to respond to regulatory enquiries from the national authorities and c) determine whether there are potential zones of microseismic activity that cannot be detected using sparse existing networks and that may represent an unknown hazard.
At present, ECGS operates 10 stations in Luxembourg (5 permanent, 5 temporary), and 5 more permanent stations are in the process of deployment. The aim of this project is to support the data analysis of the existing network as well as the further development of the network.
Expected results

Expected results year 1

European Center for Geodynamics and Seismology - Luxembourg :

Specific objectives 2018

The project aims at analyzing existing data acquired over a little more than the past five years for seismic activity patterns. This involves setting up and applying automatic detection and location routines for seismic events, characterizing these as natural or anthropogenic sources as well as determining their magnitudes. These data will then be interpreted in the tectonic context of the region. Furthermore, the broadband seismic data will be used for structural investigations, for instance through the computation of so-called receiver functions. With these automatic routines at hand, we will also be able to better and quicker respond to the needs of national authorities in case of earthquake occurrences in or around the country, such as for instance during the 14 February 2011 magnitude 4.4 earthquake near Koblenz.

Expected results 2018

The expected results of this study will be a better understanding of the seismic activity within and around Luxembourg, in particularly also answering to the question whether Luxembourg also shows  low seismic activity rates on low-magnitude levels as one might expect from the absence of moderate seismicity. In addition, the project will contribute to the development of the required seismic monitoring tools and the adaptation of these to the specific setting of Luxembourg. The results of these efforts are useful for the European scientific community in filling one of the few remaining gaps on seismological knowledge and instrumentation in the generally low-seismicity region of central Western Europe, and the approaches taken for instrumentation and data processing can be used by any other interested EUR-OPA member state.

Expected results year 2

Specific objectives 2019

The 2019 part of the project aims at the continued development of the approaches set up in 2018 as well as the further development of the seismic network. In particular, we will acquire one more broadband seismic station for permanent deployment in Luxembourg. This will further improve the seismic network performance and thus strengthen our seismic monitoring capabilities.

Expected results 2019

In 2019, the expected result is an additional installed seismic station within the Luxembourg national seismic network.

ECGS

European Center for Geodynamics and Seismology - Luxembourg



Deliverables year 1

The deliverables of the project in 2018 will be software tools for automatic detection and location adapted to the Luxembourg network specificities; a catalogue of seismicity of the past five years; a set of discrimination characteristics between natural and anthropogenic seismic events; and a report on the work carried out to be delivered to the EUR-OPA agreement secretariat.

Deliverables year 2

In 2019, the deliverables will consist in an installed permanent broadband seismic station and a report on the work carried out and progress made in relation to the work in 2018 to be delivered to the EUR-OPA agreement secretariat.

Activities year 1

At ECGS, a post-doc scientist will work on the data analysis of the Luxembourg seismic network data and characterize the seismicity that can be detected and located in this dataset. This post-doc scientist brings ample experience in this field as he worked already on the seismic data acquired in the Virunga Volcanic Province in the Democratic Republic of the Congo, and we will use the EUR-OPA funding as a contribution to pay 25% of the salary costs of this employee for the duration of six months.

The detailed activities will involve among others traditional manual seismic data analysis (event detection and phase picking) as well as the setting up and comparison with automatic routines for this purpose; analysis of wave field characteristics and the differences between anthropogenic and natural seismicity; event location and magnitude estimation; and potential structural investigations, in particular with the receiver function approach.

Activities year 2

In 2019, the activities set up during 2018 will be continued, and the funds from the EUR-OPA agreement will be used to acquire and install and new broadband seismic station to densify the existing network.

European Center for Geodynamics and Seismology - Luxembourg



Deliverables year 1


The deliverables of the project in 2018 will be software tools for automatic detection and location adapted to the Luxembourg network specificities; a catalogue of seismicity of the past five years; a set of discrimination characteristics between natural and anthropogenic seismic events; and a report on the work carried out to be delivered to the EUR-OPA agreement secretariat.

Deliverables year 2


In 2019, the deliverables will consist in an installed permanent broadband seismic station and a report on the work carried out and progress made in relation to the work in 2018 to be delivered to the EUR-OPA agreement secretariat.

Activities year 1


At ECGS, a post-doc scientist will work on the data analysis of the Luxembourg seismic network data and characterize the seismicity that can be detected and located in this dataset. This post-doc scientist brings ample experience in this field as he worked already on the seismic data acquired in the Virunga Volcanic Province in the Democratic Republic of the Congo, and we will use the EUR-OPA funding as a contribution to pay 25% of the salary costs of this employee for the duration of six months.

The detailed activities will involve among others traditional manual seismic data analysis (event detection and phase picking) as well as the setting up and comparison with automatic routines for this purpose; analysis of wave field characteristics and the differences between anthropogenic and natural seismicity; event location and magnitude estimation; and potential structural investigations, in particular with the receiver function approach.

Activities year 2


 

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