Preprints
Filtering by Subject: Earth Sciences
Identification of a Potential Geothermal Resource in Colombia through the Application of Geoelectric Methods at the Aguas de Vichy Spring in the Municipality of San Andrés, Santander
Published: 2024-05-09
Subjects: Earth Sciences
The Aguas de Vichy thermal spring (SAN-001), identified by the Colombian Geological Service (SGC) and located in Santander, Colombia, represents a significant yet underexplored geothermal resource. This study is the first to conduct subsurface imaging of the geothermal system, employing Electrical Resistivity Tomography (ERT) and Induced Polarization (IP) methods to investigate the [...]
A Review of Machine Learning in Snow Water Equivalent Monitoring
Published: 2024-05-09
Subjects: Artificial Intelligence and Robotics, Computer Sciences, Databases and Information Systems, Earth Sciences, Hydrology, Numerical Analysis and Scientific Computing, Oceanography and Atmospheric Sciences and Meteorology
In recent years, the scientific community focused on snow dynamics has witnessed a surge in efforts aimed at enhancing Snow Water Equivalent (SWE) monitoring capabilities, largely propelled by the incorporation of Machine Learning (ML) techniques. This comprehensive review delves into the current state of research within this evolving domain, shedding light on the indispensable role of precise [...]
Winter subglacial meltwater detected in a Greenland fjord
Published: 2024-05-08
Subjects: Earth Sciences, Glaciology, Oceanography, Oceanography and Atmospheric Sciences and Meteorology, Other Earth Sciences, Physical Sciences and Mathematics
The interaction between glacier fronts and ocean waters is one of the key uncertainties for projecting future ice mass loss. Direct observations at glacier fronts are sparse, but studies indicate that the magnitude and timing of freshwater fluxes are crucial in determining fjord circulation, ice frontal melt and ecosystem habitability. In particular, wintertime dynamics are severely understudied [...]
The fate of bars in braided rivers
Published: 2024-05-05
Subjects: Earth Sciences, Geology, Physical Sciences and Mathematics, Sedimentology, Stratigraphy
Ancient river deposits are important archives of past landscape conditions on planetary surfaces. On Earth, they host valuable groundwater, energy resources, and carbon-storage potential. Reconstructing details of paleochannel forms and movements refines our understanding of the controls on river behavior under different climate, landcover, and tectonic conditions, and improves predictions and [...]
Earth Science Data Repositories: Implementing the CARE Principles
Published: 2024-05-03
Subjects: Earth Sciences
Interpretable Quality Control of Sparsely Distributed Environmental Sensor Networks Using Graph Neural Networks
Published: 2024-05-02
Subjects: Artificial Intelligence and Robotics, Earth Sciences
Environmental sensor networks play a crucial role in monitoring key parameters essential for understanding Earth’s systems. To ensure the reliability and accuracy of collected data, effective quality control (QC) measures are essential. Conventional QC methods struggle to handle the complexity of environmental data. Conversely, advanced techniques such as neural networks, are typically not [...]
The potential of terrestrial and aquatic molluscs for the temporal analysis of Deckenschotter deposits and younger Quaternary sediments from the Swiss Plateau
Published: 2024-05-02
Subjects: Earth Sciences, Geology, Geomorphology, Paleobiology, Paleontology, Physical Sciences and Mathematics, Sedimentology, Soil Science, Stratigraphy, Terrestrial and Aquatic Ecology
GeoAI and the Future of Spatial Analytics
Published: 2024-05-01
Subjects: Computer Sciences, Earth Sciences, Environmental Sciences, Environmental Studies, Geography, Library and Information Science, Physical Sciences and Mathematics, Social and Behavioral Sciences
This chapter discusses the challenges of traditional spatial analytical methods in their limited capacity to handle big and messy data, as well as mining unknown or latent patterns. It then introduces a new form of spatial analytics – geospatial artificial intelligence (GeoAI) - and describes the advantages of this new strategy in big data analytics and data-driven discovery. Finally, a [...]
Carbonate clumped isotope values compromised by nitrate-derived NO2 interferent
Published: 2024-04-30
Subjects: Earth Sciences, Geochemistry
∆47 based clumped isotope thermometry has enabled reconstruction of Earth’s surface temperatures independent of the source of oxygen within the carbonate. It has been postulated that carbonate samples can contain contaminants that cause isobaric interferences, compromising measured ∆47 values and reconstructed temperatures. The exact nature of contaminants and isobaric interferents, however, [...]
Quantifying water availability in basins holding the majority of global lithium resources
Published: 2024-04-24
Subjects: Earth Sciences, Hydrology, Physical Sciences and Mathematics
More than half the world’s lithium resources are found in brine aquifers in Chile, Argentina, and Bolivia. Lithium brine processing requires freshwater, so as lithium exploration increases, accurate estimates of freshwater availability are critical for water management decisions in this region with limited water resources. Here we calculate modern freshwater inflows, such as groundwater recharge [...]
Simulated sea surface temperatures around New Zealand from 1982-2015 compared to three ground truth datasets
Published: 2024-04-23
Subjects: Earth Sciences, Physical Sciences and Mathematics
In this brief note, I show the extent of global warming, as exemplified by sea surface temperature - SST - around New Zealand from 1982-2015. We use 16 members of the UKESM historical simulations from the sixth Assessment Report of the Intergovernmental Panel On Climate Change. These model data are compared to ground truth data from three observational datasets. All data is plotted with respect [...]
Post-collisional reorganisation of the Eastern Alps in 4D: Crust and mantle structure
Published: 2024-04-22
Subjects: Earth Sciences, Geology
The Eastern Alps were affected by a profound post-collisional tectonic reorganisation in Neogene time, featuring indentation by the Adriatic upper plate, rapid uplift and filling of the eastern Molasse Basin, rapid exhumation and eastward orogen-parallel transport of Tertiary metamorphic units in the orogenic core, and a shift from northward thrust propagation in the European plate to southward [...]
Limited long-term cooling effects of flood basalt emplacements
Published: 2024-04-22
Subjects: Biogeochemistry, Earth Sciences, Geochemistry, Geology, Volcanology
The emplacement of large igneous provinces (LIPs) is known to have been a driver of climate change in Earth’s past, particularly during the breakup of Pangaea. However, the balance between climate warming through CO2 emission and climate cooling through increased weathering is poorly understood. To better understand the role of LIP emplacement on long-term climate change, we utilize a coupled [...]
Carbon isotope fractionation between CO2 and carbon in silicate melts at high temperature
Published: 2024-04-19
Subjects: Earth Sciences
The isotopic fractionation of carbon between CO2 gas and silicate melts is a crucial parameter to understand the carbon cycle at the planetary scale that requires accurate quantification. In this study, we conducted experiments to determine the carbon isotope fractionation between CO2 gas and carbon dissolved in silicate melt at 350 – 420 MPa and 1160 – 1225 °C, across a range of melt [...]
Systematic Review of the Geothermal Potential in Colombia: Implications as an Alternative Energy Source
Published: 2024-04-16
Subjects: Earth Sciences, Geochemistry, Geology, Geophysics and Seismology, Physical Sciences and Mathematics
Through literature review and information processing, the current state of geothermal energy in Colombia, its limitations, possible future uses, environmental impact and the current legal framework were described and analyzed. Approximations were made regarding the sustainability of geothermal energy in the country and its implications. Some of the projects, studies, and research that have been [...]