REMAS: Greenhouse gas emissions risk management in forest fires

Trabajo presentado en World Forestry Congress, celebrado en Seúl (Corea del Sur) del 02 al 06 de mayo de 2022.REMAS is an Interreg SUDOE project, an innovative project, both in terms of subject matter and territorial approach. Through transnational cooperation, REMAS addresses the risk management of emitting carbon contained in forest ecosystems into the atmosphere due to forest fires, with a multidisciplinary and integrative character. REMAS proposes prevention and post-fire measures to minimise damage and accelerate the recovery of carbon stocks. The project also works to ensure that this emission risk is included in the design of prevention plans and in taking measures to restore sinks in soil and vegetation at a transnational level. Therefore, through transnational cooperation, REMAS is fostering strong partnerships in which regional and local authorities, academia, NGOs and forest sector companies work together to address the transboundary risk of greenhouse gas emissions from forest fires in the SUDOE territory, whose forest ecosystems are particularly vulnerable to climate change impacts. REMAS is a project co-financed by the Interreg Sudoe Program through the European Regional Development Fund (ERDF) which involves 8 partners and 9 associated partners

Kinematics and Age of Syn-Intrusive Detachment Faulting in the Southern Alps: Evidence for Early Permian Crustal Extension and Implications for the Pangea A Versus B Controversy

Permian basin formation and magmatism in the Southern Alps of Italy have been interpreted as expressions of a WSW‐ENE‐trending, dextral megashear zone transforming Early Permian Pangea B into Late Permian Pangea A between ~285 and 265 Ma. In an alternative model, basin formation and magmatism resulted from N‐S crustal extension. To characterize Permian tectonics, we studied the Grassi Detachment Fault, a low‐angle extensional fault in the central Southern Alps. The footwall forms a metamorphic core complex affected by upward‐increasing, top‐to‐the‐southeast mylonitization. Two granitoid intrusions occur in the core complex, the synmylonitic Val Biandino Quartz Diorite and the postmylonitic Valle San Biagio Granite. U‐Pb zircon dating yielded crystallization ages of 289.1 ± 4.5 Ma for the former and 286.8 ± 4.9 Ma for the latter. Consequently, detachment‐related mylonitic shearing took place during the Early Permian and ended at ~288 Ma, but kinematically coherent brittle faulting continued. Considering 30° anticlockwise rotation of the Southern Alps since Early Permian, the extension direction of the Grassi Detachment Fault was originally ~N‐S. Even though a dextral continental wrench system has long been regarded as a viable model at regional scale, the local kinematic evidence is inconsistent with this and, rather, supports N‐S extensional tectonics. Based on a compilation of >200 U‐Pb zircon ages, we discuss the evolution and tectonic framework of Late Carboniferous to Permian magmatism in the Alps

Cokriging electrical resistivity for detailed study of soil depth variability, a case study in Beauce area (France)

International audienc

Epaisseur de la couverture du sol et prospection géophysique par des méthodes électriques: étude de cas en Petite Beauce

International audienceSoil thickness is required for estimation of water storage properties and their consequencies on bypass flow occurrence and water transfers down toaquifer. ln the Beauce area (France), accurate mapping of soil thickness is difficult because of its high spatial variability. This study aims at describing soil thickness variation by using electrical resistivity survey and auger boring data on an area of 100 ha. The soils are mainly loamy soils on a cryogenic calcareous bedrock with local karstic areas. Results showed a close relationship between soil thickness and electrical resistivity. Locally, a karstic depression filled by sandy claye materials was shown. Thickness of the se sandy clayey materials was studied by using systematical electrical resistivity profiling on an area of 30 ha. Results demonstrate thal electrical resistivity determinations can provide a useful tool for detailed study of thickness variability.La connaissance de l'épaisseur de la couverture de sol est indispensable pour estimer les quantités d'eau qui sont retenues par cette couverture et celles qui sont drainées vers l'aquifère en période hivernale. En Petite Beauce, la description des variations d'épaisseur de la couverture de sol est rendue difficile par la forte variabilité spatiale de ce caractère. Cette étude a pour objectif de décrire de telles variations d'épaisseur du sol en utilisant des données de résistivités issues de sondages électriques couplées à des mesures réalisées par sondages mécaniques à la tarière. Sur le secteur étudié (100 ha), les sols sont développés dans une couverture limona-argileuse susjacente à un calcaire fréquemment cryoturbé. Une étroite corrélation existe entre les mesures d'épaisseur obtenues par sondage mécanique et celles calculées par inversion des sondages électriques. Localement, sont intercalés entre les matériaux limono-argileux et le calcaire de Beauce, des matériaux argilo-sableux. L'épaisseur des formations argilo-sableuses est étudiée sur une trentaine d'hectares en réalisant un profilage électrique. Les résultats de ce travail montrent que les méthodes électriques constituent un outil efficace pour l'étude de la variabilité spatiale de l'épaisseur de la couverture de sol et des formations superficielles