Preprints
There are 4713 Preprints listed.
An agent-based modeling approach to household adaptation for flooding and coastal erosion at Channel-Port aux Basque
Published: 2024-04-18
Subjects: Environmental Studies
Climate change poses a significant threat to coastal communities, particularly those reliant on coastal infrastructure. Rising sea levels and increasingly severe weather events endanger coastlines across Canada, a nation with over 243,000 km of coastline. Indigenous communities, with their long history of coastal resource utilization, are especially vulnerable. This study investigates the social, [...]
Narrow, fast, and "cool" mantle plumes caused by strain-weakening rheology in Earth's lower mantle
Published: 2024-04-18
Subjects: Physical Sciences and Mathematics
The rheological properties of Earth's lower mantle are key for mantle dynamics and planetary evolution. The main rock-forming minerals in the lower mantle are bridgmanite (Br) and smaller amounts of ferropericlase (Fp). Previous work has suggested that the large differences in viscosity between these minerals greatly affect the bulk rock rheology. The resulting effective rheology becomes highly [...]
The influence of a sub-lithospheric layer width on the partitioning of the induced mantle flow, surface motions and subduction dynamics
Published: 2024-04-17
Subjects: Geophysics and Seismology, Other Earth Sciences, Planetary Geology, Tectonics and Structure
The partitioning of the three-dimensional mantle flow into toroidal and poloidal components is a diagnostic element to characterise tectonics regimes, with both fields being substantially active and representative of the contemporary mode of mantle convection. The toroidal:poloidal ratio (T/P) affects several aspects of mantle circulation, including the sinking of the subducting lithosphere into [...]
Moist Internally Cooled Convection
Published: 2024-04-17
Subjects: Atmospheric Sciences
The response of clouds and moist-convective processes to heat-loss to space by long-wave radiative cooling is an important feedback in the earth's atmosphere. It is known that moist convection increases roughly in equilibrium with radiative cooling, an assumption often made in simplified models of the tropical atmosphere. In this study, we use an idealised 2D model of the atmosphere introduced by [...]
Geo-WC: Custom Web Components for Earth Science Organizations and Agencies
Published: 2024-04-16
Subjects: Civil and Environmental Engineering, Civil Engineering, Computer Engineering, Engineering Education, Hydraulic Engineering
The development of web technologies and their integration into various fields has allowed a new era in data-driven decision-making and public information accessibility, especially through their adoption of monitoring and quantification environmental data resources provided by governmental institutions. While the use of web technologies has given way to the creation of democratized applications, [...]
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 [...]
Digitising sandbox experiments using open-source Structure-from-Motion/photogrammetry/Digital Image Correlation package MicMac
Published: 2024-04-15
Subjects: Geology, Geophysics and Seismology, Tectonics and Structure, Volcanology
Structure-from-Motion and photogrammetry have been implemented in sandbox models to monitor deformation of their surface. Various software packages are available, either open-source of commercial. Some commercial packages are intuitive press-button equipment; these can be very practical to use, but they can be very expensive and unaffordable for most academic laboratories. Another option is [...]
Evolution and architecture of an exhumed ocean-facing coarse-grained submarine canyon fill, Baja California, Mexico
Published: 2024-04-15
Subjects: Earth Sciences, Geology, Sedimentology, Stratigraphy, Tectonics and Structure
Present day submarine canyons are active conduits for large volumes of sediment, carbon, and pollutants from continents to oceans. However, the evolution of submarine canyons over geological timescales remains poorly understood due to their erosional nature and low preservation potential. The Late Cretaceous Punta Baja Formation represents a well-preserved submarine canyon-fill on a [...]
Rapid earthquake-tsunami modeling: The multi-event, multi-segment complexity of the 2024 Mw 7.5 Noto Peninsula Earthquake governs tsunami generation
Published: 2024-04-13
Subjects: Geophysics and Seismology
The January 1st, 2024, moment magnitude (Mw) 7.5 Noto Peninsula earthquake ruptured in complex ways, challenging timely analysis of the tsunami generation. We present rapid and accurate tsunami models informed by a 6-subevent centroid moment tensor (CMT) model that we obtain by inverting teleseismic and strong motion data and validation against geodetic observations. We identify two distinct [...]
Linking the oxygen-17 compositions of water and carbonate reference materials using infrared absorption spectroscopy of carbon dioxide
Published: 2024-04-13
Subjects: Earth Sciences, Physical Sciences and Mathematics
Joint measurements of the 18O/16O and 17O/16O ratios of carbonate minerals and waters are increasingly used to investigate various geochemical, physical and biological processes. Diverse analytical methods, each of them technically challenging in one way or another, have been developed or refined in recent years to measure oxygen-17 anomalies (Δ17O) with instrumental precisions of 10 ppm or [...]
Can multi-scale thermal infrared imaging help validate and monitor water stress in alluvial forests?
Published: 2024-04-13
Subjects: Geomorphology, Physical and Environmental Geography, Remote Sensing, Terrestrial and Aquatic Ecology
Alluvial forests are fragile and sensitive to drought induced by climate change and exacerbated by altered flow regimes. Our ability to detect and map their sensitivity to drought is therefore crucial to evaluate the effects of climate change and adjust management practices. In such a context, we explore the potential of multi-scale thermal infrared imagery (TIR) to diagnose the sensitivity of [...]
Entry points for accelerating transitions towards a more sustainable future
Published: 2024-04-13
Subjects: Social and Behavioral Sciences
Accelerated transitions that enable far-reaching and systemic changes to a more sustainable future are urgently needed to ensure inclusive human development and Earth system stability. Different processes for accelerating transitions have been proposed over the past decade. However, evidence-based guidance on of what these processes are across scientific and policy spheres and their specification [...]
A hybrid approach to enhance streamflow simulation in data-constrained Himalayan basins: Combining the Glacio-Hydrological Degree-Day Model and Recurrent Neural Networks
Published: 2024-04-12
Subjects: Physical Sciences and Mathematics
The Glacio-hydrological Degree-day Model (GDM) is a distributed model but prone to uncertainties due to its conceptual nature, parameter estimation, and limited data in the Himalayan basins. To enhance accuracy without sacrificing interpretability, we propose a hybrid model, GDM-RNNs, combining GDM with Recurrent Neural Networks (RNNs). Three RNN types (Simple RNN, GRU, LSTM) are integrated with [...]
Part 1: Anthropocene Series/Epoch: stratigraphic context and justification of rank The Anthropocene Epoch and Crawfordian Age: proposals by the Anthropocene Working Group
Published: 2024-04-12
Subjects: Physical Sciences and Mathematics
The Anthropocene Working Group (AWG) has concluded that the Anthropocene represents geological reality and should be linked with the plethora of stratigraphic proxies that initiate or show marked perturbations at around the 1950s, and should be defined using a Global boundary Stratotype Section and Point (GSSP). We propose formalizing the Anthropocene as series/epoch, terminating the Holocene [...]
Part 2: Descriptions of the proposed Crawford Lake GSSP and supporting SABSs. The Anthropocene Epoch and Crawfordian Age: proposals by the Anthropocene Working Group
Published: 2024-04-12
Subjects: Physical Sciences and Mathematics
This part of the Anthropocene Working Group (AWG) submission proposes that the base of the Anthropocene should be defined as series/epoch, terminating the Holocene Series/Epoch with a single Crawfordian stage/age using a Global boundary Stratotype Section and Point (GSSP) in an annually varved Crawford Lake core, Ontario, Canada, defined at 17.5 cm in core CRA23-BC-1F-B at the base of the dark [...]