With its expertise in human geography, physical geography and geomatics, the scientific program of the IDEES Caen team aims to contribute to knowledge on nature-society interactions through a modelling and integrative approach lying at the geographical interfaces between land, sea and atmosphere. The IDEES Caen laboratory focuses on two specific investigative areas, with a variety of issues that are directly or indirectly linked to the multi-scalar consequences of climatic and socio-economically driven global changes: littoral (the sea and coastal catchment areas) and continental environments. The members of the LETG laboratory, geographers, geomorphologists, hydrologists are at the origin of these original projects. In this way, they have consolidated their experience in terms of project editing with a pedagogical purpose, transdisciplinary approach and long-term application of these devices for the public communities The experiments carried out using digital innovations feed a reflective and critical approach of concepts and methods while remaining attentive to public action, hence the organization of the scientific program into three research themes: coastal cliff erosion, submersion in relation with sea level rise, and surface runoff vs landuse management. As part of the IDEES research deals with hazards and risks in the coastal and mountainous environment (storm flooding and concomitance with continental floods), and their appropriation by elected officials a research to determine and quantify the risk and to share this knowledge with the elected representatives of the territory through a vector of communication that is virtual and augmented reality.