Hémera Earth Observation Center hosts a fellow expert from the Geo-Environmental Cartographyand Remote Sensing Group (CGAT) of the Polytechnic University of Valencia (Spain). We worked and shared experiences with Ph.D. candidate Elena Sánchez, in the framework of a new joint project on the Chilean coast. The project aims to characterize and monitor the coastal line in order to derive relevant information on climate change, by using satellite imagery and participatory monitoring. During Elena’s stay, data were collected in the field over beaches on Valparaiso Region. These data will be used as input for specific procedures to automatically characterize the coastline.