There are 3491 Preprints listed.
Published: 2023-01-24
Subjects: Earth Sciences, Hydrology, Physical Sciences and Mathematics, Water Resource Management
Temperature logs are an important tool in the geothermal industry. Temperature measurements from boreholes are used for exploration, system design, and monitoring. The number of observations, however, is not always sufficient to fully determine the temperature field or explore the entire parameter space of interest. Drilling in the best locations is still difficult and expensive. It is therefore [...]
Published: 2023-01-24
Subjects: Physical Sciences and Mathematics
Volcanic ash provides unique pieces of information that can help understand the progress of volcanic activity at the early stages of unrest and possible transitions towards different eruptive styles. Ash contains different types of particles that are indicative of eruptive styles and magma ascent-related processes. However, classifying ash particles into its main components is not [...]
Published: 2023-01-24
Subjects: Environmental Monitoring, Geology, Marine Biology, Other Environmental Sciences, Sedimentology
Mesophotic reefs are found in water depths greater than 30m and as such are, for the most part, removed from most direct wave activity, notably in the Mediterranean Sea. There, they are protected from anthropogenic impact and serve as a possible refuge for marine biodiversity in a warming ocean. Yet, like any reef, their growth is modulated by the distribution of the sediment they produce and [...]
Published: 2023-01-24
Subjects: Geology, Geophysics and Seismology
The thermochemical structure of the lithosphere exerts control on melting mechanisms in the mantle as well as the location of volcanism and ore deposits. Imaging the complex interactions between the lithosphere and asthenospheric mantle requires the joint inversion of multiple data sets and their uncertainties. In particular, the combination of seismic velocity and electrical conductivity with [...]
Published: 2023-01-24
Subjects: Physical Sciences and Mathematics
Studies of fluvial landforms on the surface of Mars have become more detailed since rover data became available of areas altered by water (e.g. water-deposited sediment in Gale crater by Curiosity and the Jezero delta by Perseverance). As surface interpretations become more detailed, we need to pay more attention to the differences between Earth and Mars to fully describe the processes that [...]
Published: 2023-01-20
Subjects: Applied Statistics, Earth Sciences, Geomorphology, Hydrology, Meteorology
High spatiotemporal resolution satellite data have been available to provide rainfall estimates with global coverage and relatively short latency. On the other hand, a rain gauge measures the actual rain that falls to the surface, but its network density is commonly sparse, particularly those that record at sub-daily records. These datasets are extensively used to define rainfall thresholds for [...]
Published: 2023-01-20
Subjects: Physical Sciences and Mathematics
In peninsular India, the Deccan Traps record massive, continental-scale volcanism in a sequence of magmatic events that mark the mass extinction at the Cretaceous-Paleogene boundary. Although the Deccan volcanism is linked with the Réunion hotspot, the origin of its periodic magmatic pulses is still debated. We develop a numerical model, replicating the geodynamic scenario of the African [...]
Published: 2023-01-20
Subjects: Oceanography and Atmospheric Sciences and Meteorology, Physical Sciences and Mathematics
Biogenic volatile organic compounds are vital precursors of tropospheric ozone (O3). In the past decades, northern China has witnessed the strongest enhancement of vegetation covers due to national afforestation projects; however, response of the vegetation greenness to near-surface O3 remains unclear. By integrating measurements and numerical simulations, here we show that O3 pollution in [...]
Published: 2023-01-19
Subjects: Geology, Stratigraphy
Depositional and erosional bedforms can be used to reconstruct sedimentary processes and aid paleoenvironmental interpretations. Using exhumed deep-marine strata in the Eocene Aínsa Basin, Spain, we document a 3-dimensional package of dunes; a relatively rarely identified bedform in deep-marine environments. Our analysis shows that the dunes have curvilinear crests in planform, with smaller [...]
Published: 2023-01-19
Subjects: Education, Engineering
In this work, a data-driven approach is taken to tackle problems in Petroleum Engineering domain, for both conventional and unconventional reservoirs. Conventional reservoirs face the problem of losing energy for flowing after a few years of production, thus operators choose to inject water and inject CO$_2$ as a secondary and tertiary recovery method. The question of interest is that how [...]
Published: 2023-01-19
Subjects: Earth Sciences
Tectonic deformation and associated submarine slope failures modify seafloor relief, influencing sediment dispersal patterns and the resulting depositional architecture of deep-water systems. The exhumed Middle Eocene strata of the Banastón deep-water system in the Aínsa depocentre, Spain, allow the interplay between submarine slope confined systems, mass flow deposits, and syn-depositional [...]
Published: 2023-01-18
Subjects: Earth Sciences, Geochemistry, Geology, Multivariate Analysis, Physical Sciences and Mathematics, Statistics and Probability
Stream sediment geochemistry is a useful tool to analyse the geochemistry of the local geology within the source catchment area. This has significant applicability within the field of mineral exploration where understanding regional lithological geochemistry is needed, facilitating the identification of critical metal deposits. Successful identification of these deposits is essential to help [...]
Published: 2023-01-18
Subjects: Earth Sciences, Fluid Dynamics, Numerical Analysis and Computation
It is a well-accepted hypothesis that deep-mantle primary plumes originate from a buoyant boundary layer at the Core-Mantle Boundary (CMB), where Rayleigh–Taylor (RT) instabilities play a key role in the plume initiation process. Combining 2D computational fluid dynamic (CFD) model simulations and a linear stability analysis, this article explores how a horizontal global flow in the mantle can [...]
Published: 2023-01-18
Subjects: Geochemistry
The existence of resolvable 182W/184W deficits in modern ocean island basalts (OIB) relative to the bulk silicate Earth has raised questions about the relationship of these rocks to Earth’s core. However, because the core is expected to host high abundances of highly siderophile elements (HSE), it would be expected that such heterogeneity is accompanied by correlating variability in HSE [...]
Published: 2023-01-17
Subjects: Physical Sciences and Mathematics
Basement highs form one of many potential sediment source areas during the evolution of continental rifts and rifted margins and add to the topographic complexity typical of active rifts. Footwall basement highs acting as a source area to sedimentary systems in the hangingwall of major faults has been documented in many systems worldwide. However, the back-tilted footwall dip slopes of such highs [...]