Preprints
There are 4717 Preprints listed.
Discovery of a new 12-km impact crater candidate at As Sail Al Kabeer, Saudi Arabia
Published: 2023-07-11
Subjects: Earth Sciences, Geology, Physical Sciences and Mathematics, Planetary Geology, Planetary Sciences
The Arabian shield of Saudi Arabia likely has many impact craters due to the old age of its rocks, however many of them have not yet been discovered due to their resemblance to plutons. Using satellite imagery, a 12-km wide circular structure with a central peak was identified at As Sail Al Kabeer, 40 kilometers north of the city of Taif in western Saudi Arabia. Fieldwork has shown that this [...]
Electric Circuit Theory as a method for monitoring tree water deficit at different scales
Published: 2023-07-11
Subjects: Forest Biology, Forest Sciences, Other Forestry and Forest Sciences
Climate change is expected to alter precipitation patterns, making droughts more frequent in some areas, which will expose trees to more severe water deficits which could result in the catastrophic collapse of their water transport system and, eventually, mortality. To inform forest management and tree species suitability to increase forest resilience requires a robust method for understanding [...]
Data Cubes for Earth System Research: Challenges Ahead
Published: 2023-07-10
Subjects: Computer Sciences, Earth Sciences, Environmental Sciences
Progress in Earth system science is accelerating rapidly, due to the increasing availability of multivariate datasets, often global, with moderate to high spatio-temporal resolutions. Turning these data into knowledge presents interoperability, technical, analytical, and other challenges. Earth System Data Cubes (ESDCs) have surfaced as essential tools, offering analysis-ready, cloud-optimised [...]
A high-resolution, 3D groundwater-surface water simulation of the contiguous US: Advances in the integrated ParFlow CONUS 2.0 modeling platform
Published: 2023-07-10
Subjects: Engineering
Large-scale, high-resolution hydrologic modeling is an important tool to address questions of water quantity, availability, and recharge. Continental-to-Global scale models, particularly those that include groundwater, are growing in number. However, many of these approaches simplify aspects of the system and the connections between e.g., surface water and groundwater. The ParFlow CONUS modeling [...]
Satellite-derived shorelines for monitoring of sandy beaches: a benchmark study
Published: 2023-07-09
Subjects: Civil and Environmental Engineering, Earth Sciences, Engineering, Environmental Engineering, Geomorphology, Oceanography, Oceanography and Atmospheric Sciences and Meteorology, Other Earth Sciences, Physical Sciences and Mathematics
Satellite remote sensing is becoming a widely used monitoring technique in coastal sciences. Yet, no benchmarking studies exist that compare the performance of popular satellite-derived shoreline (SDS) mapping algorithms against standardized sets of inputs and validation data. Here we present a new benchmarking framework to evaluate the accuracy of shoreline change observations extracted from [...]
Projecting Future Heat Stress Disparities to 2100 in the Contiguous United States
Published: 2023-07-09
Subjects: Social and Behavioral Sciences
Global warming increases health risks from heat exposure. Historical evidence suggests disproportionate impacts of heat exposure in different regions across socioeconomic groups in the US. However, little is known about the scale of potential disparities and which populations stand to be most vulnerable under different future climate scenarios. Here, we assess county-level heat exposure, measured [...]
Mitigation effectiveness on groundwater-dependent ecosystems revealed by counterfactual AI
Published: 2023-07-09
Subjects: Artificial Intelligence and Robotics, Environmental Engineering, Hydrology, Sustainability, Water Resource Management
Overexploitation of groundwater threatens groundwater-bound aquatic and terrestrial biodiversity and ecosystem stability, underscoring the need to devise appropriate mitigation strategies. Yet, substantial scientific evidence that mitigation measures effectively protect groundwater ecosystems is presently nonexistent. We provide unique and compelling evidence, using counterfactual artificial [...]
Heuristic Data-inspired Scheme to Characterize Meteorological and Groundwater Droughts in Semi-arid Karstic Region under Warming Climate
Published: 2023-07-08
Subjects: Environmental Engineering, Environmental Indicators and Impact Assessment, Hydrology
Study region The Edwards Aquifer Region is located in south-central Texas, United States. Study focus The paper focuses on the development and implementation of a data-inspired heuristic drought identification scheme to (i) quantify the intensity, duration, and frequency of precipitation deficit- and high temperature-driven meteorological droughts (PMet- and TMet-droughts), and (ii) link [...]
Optimising the value of a CO2 Water-Alternating-Gas injection project under geological and economic uncertainties using an improved artificial neural network.
Published: 2023-07-08
Subjects: Engineering, Other Engineering
The numerical simulations required for the robust optimisation of the alternating injection of water and CO2 in hydrocarbon reservoirs are computationally expensive due to engineering, geological, and economic uncertainties. Using approximation models of the desired objective function(s) can significantly decrease the cost associated with the optimisation routines while providing an adequate [...]
Moral Hazards and Geoengineering: Evidence from a Large-Scale Online Experiment
Published: 2023-07-07
Subjects: Social and Behavioral Sciences
Geoengineering (especially solar radiation management) may help to reduce the negative outcomes of climate change by minimising or reversing global warming. However, many express the worry that geoengineering may pose a moral hazard, i.e., that information about geoengineering may lead to a reduction in climate change mitigation efforts. In this paper, we report a large-scale pre-registered, [...]
Transporting Heat Flux From the US and Europe to Antarctica Guided by Regional Seismic Structure
Published: 2023-07-07
Subjects: Earth Sciences, Geophysics and Seismology, Glaciology, Physical Sciences and Mathematics
Subglacial geothermal heat flux affects the dynamics of the Antarctic ice sheet but is poorly known. We estimate heat flux across West Antarctica and the interior of East Antarctica by transporting heat flux observations from the contiguous US and Europe, based on seismic structure with a lateral resolution of about \qty{100}{km}. We transport with three Machine Learning models across a hierarchy [...]
Sequence stratigraphy of the Eocene-Miocene Mrayt Group, North-Western Rif (Morocco)
Published: 2023-07-07
Subjects: Physical Sciences and Mathematics
Detailed sequence stratigraphy of the Eocene-Miocene Mrayt Group in North-Western Rif (Morocco), allow identifying the nature and the sources of the sediment supplies, the sedimentary facies and the depositional environments as well as the factors that controlled the sedimentation. This work made it also possible to identify 16 facies sequences that have never been described before. facies [...]
Improved representation of laminar and turbulent sheet flow in subglacial drainage models
Published: 2023-07-07
Subjects: Earth Sciences, Glaciology, Physical Sciences and Mathematics
Subglacial hydrology models struggle to reproduce seasonal drainage patterns that are consistent with observed subglacial water pressures and surface velocities. We modify the standard sheet-flow parameterization within a coupled sheet--channel subglacial drainage model to smoothly transition between laminar and turbulent flow based on the locally computed Reynolds number in a physically [...]
Demystifying the Dynamics of Global and Regional Sea Level Trends from 1993 to 2021
Published: 2023-07-07
Subjects: Applied Statistics, Earth Sciences, Physical Sciences and Mathematics, Statistical Models
As global sea levels rise, questions persist about the robustness of trends and their dynamics. Here, we offer a fresh perspective by examining the dynamics of global and regional mean sea-level trends using a probabilistic framework applied to the altimetric record. We show that the global mean sea-level (GMSL) rise accelerated from 2.5 mm/yr (1993-2000) to 4.2 mm/yr (2014-2021) with an average [...]
Assessing Precipitation Trends that may inform Aging Dam Overtopping across the USA
Published: 2023-07-07
Subjects: Civil and Environmental Engineering, Climate, Earth Sciences, Hydrology, Risk Analysis
In many cases, persistent or recurrent synoptic circulation patterns lead to multiple wet days that precede an extreme rainfall event. The joint occurrence of high antecedent rainfall and extreme rainfall defines a compound event that may pose a high risk for overtopping of aging dams. Our novel analysis assesses whether there are significant trends across the conterminous United States (CONUS) [...]