28 research outputs found
Modelo agrometeorológico para estimativa da produtividade para a cultura da soja no Estado de São Paulo
A risk assessment methodology to evaluate the risk failure of managed aquifer recharge in the Mediterranean Basin
Managed aquifer recharge (MAR) can be affected by many risks. Those risks are
related to different technical and non-technical aspects of recharge, like
water availability, water quality, legislation, social issues, etc. Many other
works have acknowledged risks of this nature theoretically; however, their
quantification and definition has not been developed. In this study, the risk
definition and quantification has been performed by means of fault trees and
probabilistic risk assessment (PRA). We defined a fault tree with 65 basic
events applicable to the operation phase. After that, we have applied this
methodology to six different managed aquifer recharge sites located in the
Mediterranean Basin (Portugal, Spain, Italy, Malta, and Israel). The
probabilities of the basic events were defined by expert criteria, based on
the knowledge of the different managers of the facilities. From that, we
conclude that in all sites, the perception of the expert criteria of the
non-technical aspects were as much or even more important than the technical
aspects. Regarding the risk results, we observe that the total risk in three
of the six sites was equal to or above 0.90. That would mean that the MAR facilities
have a risk of failure equal to or higher than 90 % in the period of
2–6 years. The other three sites presented lower risks (75, 29, and 18 % for Malta, Menashe, and Serchio, respectively)