Browsing by Autor "Fernando Jaramillo"

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Analyzing the Relationship between Electrical Consumption by Pumping and Water Induced Land Deformation to Understand Water Security
(2025) Martin Maranon-Eguivar; Alfredo Durán; Rígel Rocha López; Fernando Jaramillo
Monitoring water security remains a significant challenge due to the complexity of the water cycle and the socio-hydrological drivers behind water consumption. Effective monitoring requires data on water use and availability, which are often difficult to obtain in large urban or semi-urban areas with limited resources and lacking hydrological instrumentation. Emerging technologies, such as Earth observation systems and indirect hydrological indicators such as energy for water pumping can help estimate water use and availability. In urban socio-hydrological systems dependent on groundwater, energy consumption for pumping provides information about water use, while water-induced land surface deformation can serve as a proxy for water availability due to its relationship to groundwater level changes. This study analyzes the trends and relationship between energy consumption for groundwater pumping and land surface deformation to characterize water security, defined as the sustainable balance between water use and availability. The study focuses on Cochabamba, Bolivia, a rapidly growing metropolis facing unique water management challenges and land deformation (i.e. subsidence in some areas and uplift in others) due to groundwater overexploitation and incomplete water infrastructure. Using Small Baseline Subset (SBAS) and Regression analysis, we estimated trends in these variables from 2018 to 2022 across an extensive network of groundwater wells. We identified four trends in pumping energy consumption (increasing, decreasing, no significant change, and no consumption) and three trends in land surface deformation (uplifting, subsidence, and no significant deformation). By combining these trends, we formulated four potential scenarios to characterize water security from wells to the regional level: Water Security, Unsustainable Water Security, Water Insecurity, and Recoverable Water Insecurity. The findings reveal a predominant domestic use and an increasing trend in pumping energy consumption across wells. Most wells exhibit a state of Water Insecurity characterized by the combination of subsidence and increasing energy consumption. The study highlights the potential of combining energy consumption and land surface deformation data as accessible and scalable tools for water security monitoring in resource-constrained regions. Understanding these trends can help to develop targeted management strategies and prevent water depletion in growing urban populations.
Conspicuous Consumption and Social Segmentation
(Wiley, 2003) Fernando Jaramillo; Fabien Moizeau
This paper develops the idea that conspicuous consumption has an impact on social segmentation, i.e., on the partition of the society into communities. Even though agents do not value conspicuous goods per se, they are competing in a signalling race in order to benefit from social interactions within a community. First, we study the equilibria of this model defining the optimal strategies and the equilibrium partition that characterizes pooling and separating equilibria. In a second step, as conspicuous consumption is a pure waste of money, we study a possible Pareto–improving taxation policy.
The Potential of Hydrogeodesy to Address Water‐Related and Sustainability Challenges
(Wiley, 2024) Fernando Jaramillo; Saeid Aminjafari; Pascal Castellazzi; Ayan Santos Fleischmann; Etienne Fluet‐Chouinard; Hossein Hashemi; Clara Hübinger; Hilary R. Martens; Fabrice Papa; Tilo Schöne
Abstract Increasing climatic and human pressures are changing the world's water resources and hydrological processes at unprecedented rates. Understanding these changes requires comprehensive monitoring of water resources. Hydrogeodesy, the science that measures the Earth's solid and aquatic surfaces, gravity field, and their changes over time, delivers a range of novel monitoring tools that are complementary to traditional hydrological methods. It encompasses geodetic technologies such as Altimetry, Interferometric Synthetic Aperture Radar (InSAR), Gravimetry, and Global Navigation Satellite Systems (GNSS). Beyond quantifying these changes, there is a need to understand how hydrogeodesy can contribute to more ambitious goals dealing with water‐related and sustainability sciences. Addressing this need, we combine a meta‐analysis of over 3,000 articles to chart the range, trends, and applications of satellite‐based hydrogeodesy with an expert elicitation that systematically assesses the potential of hydrogeodesy. We find a growing body of literature relating to the advancements in hydrogeodetic methods, their accuracy and precision, and their inclusion in hydrological modeling, with a considerably smaller portion related to understanding hydrological processes, water management, and sustainability sciences. The meta‐analysis also shows that while lakes, groundwater and glaciers are commonly monitored by these technologies, wetlands or permafrost could benefit from a wider range of applications. In turn, the expert elicitation envisages the potential of hydrogeodesy to help solve the 23 Unsolved Questions of the International Association of Hydrological Sciences and advance knowledge as guidance toward a safe operating space for humanity. It also highlights how this potential can be maximized by combining hydrogeodetic technologies simultaneously, exploiting artificial intelligence, and accurately integrating other Earth science disciplines. Finally, we call for a coordinated way forward to include hydrogeodesy in tertiary education and broaden its application to water‐related and sustainability sciences in order to exploit its full potential.