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Energethique » Blog Archive » [Trouvé sur le web] Les forages gaziers à l’origine de séismes plus fréquents et plus intenses dans le nord des Pays-Bas

[Trouvé sur le web] Les forages gaziers à l’origine de séismes plus fréquents et plus intenses dans le nord des Pays-Bas

Un petit partage d’un article intéressant trouvé sur le web :

Les forages gaziers à l’origine de séismes plus fréquents et plus intenses dans le nord des Pays-Bas

http://www.bulletins-electroniques.com/actualites/72193.htm

La récurrence des séismes dans la région de Groningue (Nord des Pays-Bas) ces derniers temps est vraisemblablement liée aux forages gaziers. C’est ce qu’indique une étude officielle rendue publique le 25 janvier 2013.

L’extraction gazière est particulièrement intense dans cette région puisqu’elle abrite le plus grand gisement gazier terrestre d’Europe, hors Russie. Or en août dernier, des tremblements de terre ont commencé à se faire sentir. Depuis lors, ils semblent devenir plus fréquents et plus intenses, ce qui a conduit les autorités néerlandaises à enquêter et à réaliser des études sismiques dans la région.

Les résultats de l’étude estime que la magnitude de ces séismes pourrait à l’avenir atteindre 4 à 5 sur l’échelle de Richter. D’après les chercheurs, il y a 1 chance sur 14 que la zone soit touchée par un tremblement de terre d’une magnitude supérieure à 3.9 au cours des 12 prochains mois. En conséquence, l’autorité nationale de surveillance minière recommande de limiter le nombre de forages, pour une durée indéterminée, et préconise de renforcer certains bâtiments vulnérables.

Or, dans la province de Groningue, l’extraction de gaz constitue l’un des piliers de l’économie nationale. 97% des foyers néerlandais dépendent de ce champ gazier qui en 2011, avait rapporté 11.5 milliards d’euros à l’Etat. La proposition de réduction du nombre de forages dans cette région a ainsi été qualifiée d’ « irresponsable du point de vue économique » par le ministre de l’Economie, Henk Kamp. Un débat est en cours au parlement néerlandais.

A signaler qu’environ 10% de l’approvisionnement total de la France provient du gisement de Groningen. Ce gaz est dit « à bas pouvoir calorifique ».

Sources :
– Lien vers l’article source en néerlandais : http://redirectix.bulletins-electroniques.com/3YCps
– Lettre du ministre de l’Economie, Henk Kamp, à destination de la Chambre des Représentants, 25 janvier 2013 : http://redirectix.bulletins-electroniques.com/ILP5s

Rédacteurs :
Joachim HUET – joachim.huet@diplomatie.gouv.fr

Origine :
BE Pays-Bas numéro 43 (11/02/2013) – Ambassade de France aux Pays-Bas / ADIT – http://www.bulletins-electroniques.com/actualites/72193.htm

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