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Steps forward and open issues on the reduction of the risks related to hydrocarbon production and gas storage: the Italian experience from the viewpoint of two governmental administrations

Antoncecchi Ilaria, Di Bucci Daniela, Dolce Mauro, Terlizzese Franco

Acta Geophysica

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2019

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Vol. 67, no. 1

411--421

EN

This paper shows how mature and consolidated scientific outcomes and the increased awareness on the risks related to the hydrocarbon production and gas storage have brought European and national governments to develop new regulations, decrees, and guidelines informed by high-level scientific contents. To do this, the Italian experience from 2012 to present is described from the viewpoint of two governmental administrations, i.e., the Ministry of the Economic Development and the National Civil Protection Department. A fruitful interaction among research institutes, universities, and public administrations has accompanied this long activity phase. It includes, among other things, the constitution of working groups, the development of regulatory guidelines, their testing in pilot case studies, the constitution of a technical–scientific network for the offshore safety (CLYPEA). Within this collaboration, common goals are pursued with a coordinated approach by the ministry and the department, optimizing therefore the achievement of common goals.

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Time-dependent seismic hazard in Bobrek coal mine, Poland, assuming different magnitude distribution estimations

Leptokaropoulos K., Staszek M., Cielesta Sz., Urban P., Olszewska D., Lizurek G.

Acta Geophysica

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2017

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Vol. 65, no. 3

493--505

EN

The purpose of this study is to evaluate seismic hazard parameters in connection with the evolution of mining operations and seismic activity. The time-dependent hazard parameters to be estimated are activity rate, Gutenberg–Richter b-value, mean return period and exceedance probability of a prescribed magnitude for selected time windows related with the advance of the mining front. Four magnitude distribution estimation methods are applied and the results obtained from each one are compared with each other. Those approaches are maximum likelihood using the unbounded and upper bounded Gutenberg–Richter law and the non-parametric unbounded and non-parametric upper-bounded kernel estimation of magnitude distribution. The method is applied for seismicity occurred in the longwall mining of panel 3 in coal seam 503 in Bobrek colliery in Upper Silesia Coal Basin, Poland, during 2009–2010. Applications are performed in the recently established Web-Platform for Anthropogenic Seismicity Research, available at https://tcs.ah-epos.eu/

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Seismicity of Czorsztyn Lake Region : A Case of Reservoir Triggered Seismic Process?

Białoń W., Zarzycka E., Lasocki S.

Acta Geophysica

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2015

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Vol. 63, no. 4

1080--1089

EN

Czorsztyn Lake is an artificial water reservoir backed up by the hydropower plant Niedzica earth dam on Dunajec River in south Poland. Its filling began in 1995 and ended in 1997. The reservoir of 234.5 million m3 capacity is shallow, between 20 to 50 m of water column, on average. Until 2011 the seismic activity in this region was sparse, some 1 event trimonthly. However, in November 2011 more than 60 events occurred. Such bursts of activity, separated by low activity periods, continue to appear. Since August 2013 the area is monitored by a local seismic network. The setup allows to accurately locate the epicenters and to determine source mechanisms for stronger events. The events are clustered and aligned along NE-SW direction and their mechanisms are very similar, indicating N-S strike slip faulting. This and the irregular pattern of activity suggest that this seismicity is triggered by the reservoir impoundment.