Preprints
There are 5976 Preprints listed.
Climate and Air Quality Impact of Using Ammonia as an Alternative Shipping Fuel
Published: 2024-02-07
Subjects: Atmospheric Sciences, Oil, Gas, and Energy
As carbon-free fuel, ammonia has been proposed as an alternative fuel to facilitate maritime decarbonization. Deployment of ammonia-powered ships is proposed as soon as 2024. However, emissions of NOx, NH3 and N2O resulting from ammonia combustion could cause impacts on air quality and climate. In this study, we assess whether and under what conditions switching to ammonia fuel might affect [...]
Physicochemical and Urban Land-Use Characteristics Associated with Resistance to Precipitation in Estuaries Vary Across Scales
Published: 2024-02-06
Subjects: Physical Sciences and Mathematics
Estuaries are subject to frequent stressors, including elevated nutrient loading and extreme hydrologic events, which impact water quality and disrupt ecosystem stability and health. The capacity of an estuary to resist changes in function in response to precipitation events is a key component of maintaining estuarine health in our changing climate. However, generalizable patterns in factors [...]
Roman Ports in the Mediterranean: Geomorphology, Environment and Resilience
Published: 2024-02-04
Subjects: Social and Behavioral Sciences
Classical ports in the Mediterranean Sea existed not only in a social, economic and technical contexts but also in a geomorphological context. This geomorphological context, which includes both the harbour landform and the catchment (if any) is a function of the geomorphology of coasts and catchments (including neotectonics) and marine factors (bathymetry, low amplitude tides, surges, tsunamis [...]
Study on Serpentinites and the Consequence of the Misuse of Natural Stone in Buildings for Construction.
Published: 2024-02-04
Subjects: Engineering
Some rocks are very attractive as ornamental stone, but not all of them accomplish the needed requirements to be used in construction. Serpentinite can be an appealing rock, very commonly used as dimension stone. However, not all serpentinites can be used in such a way. The most widely used commercial serpentinite comes from Pakistan and India (i.e., Rajasthan Green), but other countries also [...]
Subsurface microbial community structure shifts along the geological features of the Central American Volcanic Arc
Published: 2024-02-04
Subjects: Biodiversity, Biogeochemistry, Earth Sciences, Environmental Microbiology and Microbial Ecology Life Sciences, Geochemistry, Geology, Microbiology, Volcanology
Subduction of the Cocos and Nazca oceanic plates beneath the Caribbean plate drives the upward movement of deep fluids enriched in carbon, nitrogen, sulfur, and iron along the Central American Volcanic Arc (CAVA). These compounds fuel diverse subsurface microbial communities that in turn alter the distribution, redox state, and isotopic composition of these compounds. Microbial community [...]
Possible Mechanisms for Tsunami-like Surge Deposits Due to the Chicxulub Impact at the K-Pg Boundary at the Tanis Site, North Dakota
Published: 2024-02-02
Subjects: Physical Sciences and Mathematics
At Tanis, a unique bi-directional sediment package occurs precisely at the Cretaceous-Paleogene (KPg) boundary, recording the first hours of the Paleogene in uncommonly fine temporal detail. The impact ejecta-bearing sediment package was rapidly emplaced by two massive, ~10-meter-high, potentially impact-triggered surges, that inundated a steep, deeply incised paleo river valley from the [...]
Quantification of Water Distribution in California: A Case Study for Other Regions in the World
Published: 2024-02-02
Subjects: Agriculture
Data for water distribution by the urban sector, environment, and agriculture across the world is not readily available, publicly accessible, or quantitatively evaluated. It is critical for any society to define and transparently account for regional water distribution in a state or country to facilitate accurate information sharing with the public. Water use in California has been criticized for [...]
A physical demonstration of the increase in global surface energy due to increasing P[CO2]
Published: 2024-02-01
Subjects: Oceanography and Atmospheric Sciences and Meteorology
Although study of the effect of energy-absorbing gases in our atmosphere has a two-hundred year history and an unequivocal explanation based on scientific observation and theory, a significant fraction of the public and even a few scientists doubt the correlation between the increasing the partial pressure of atmospheric carbon dioxide (P[CO2]) and the observed increase in terrestrial temperature [...]
Daily global methane super-emitter detection and source identification with sub-daily tracking
Published: 2024-02-01
Subjects: Atmospheric Sciences, Oil, Gas, and Energy
We use the Shortwave Infrared bands of the Visible Infrared Imaging Radiometer Suite (VIIRS) satellite instruments to retrieve atmospheric methane enhancements with 750m resolution. We show that the three VIIRS instruments in orbit uniquely enhance the currently-employed capabilities of tracking methane super-emission events. The VIIRS instrument on Suomi-NPP and the TROPOMI instrument on [...]
Regional trends and petrologic factors inhibit global interpretations of zircon trace element compositions
Published: 2024-02-01
Subjects: Earth Sciences, Geochemistry
The trace element composition of zircon reveals information about the melt that they are derived from, as such, detrital zircon trace element compositions can be used to interrogate melt compositions, and thus the evolution of the continental crust in time and space. Here, we present a global database of detrital zircon compositions and use it to test whether average global trends for five common [...]
An updated landslide susceptibility model and a log-Gaussian Cox process extension for Scotland
Published: 2024-01-31
Subjects: Applied Statistics, Geomorphology
At the time of its development, GeoSure was created using expert knowledge based on a thorough understanding of the engineering geology of the rocks and soils of Great Britian. The ability to use a data-driven methodology to develop a national scale landslide susceptibility was not possible due to the relatively small size of the landslide inventory at the time. In the intervening 20 years the [...]
Freshwater plume-like condition near the north-eastern coastal Arabian Sea during early Miocene: Evidence from the stable isotope record in the growth bands of gastropods (Turritella sp.)
Published: 2024-01-30
Subjects: Climate, Earth Sciences, Geochemistry, Oceanography and Atmospheric Sciences and Meteorology
The Early Miocene witnessed major tectonic, palaeoceanographic and climatological reorganizations over the Asian realm. The Himalayan and Tibetan plateau upliftment influenced monsoon intensity during this age. Contemporary high-resolution tropical hydroclimate records are limited. Here, we present an early Miocene sub-annual stable isotope record from the growth bands of well-preserved [...]
THE IMPORTANCE OF PRESERVING SMALL HERITAGE SITES. THE CASE OF LA TUIZA SANCTUARY (ZAMORA, SPAIN).
Published: 2024-01-30
Subjects: Engineering
Granite has been one of the most used natural stones to build heritage for centuries. This is obviously the case when granite is the main regional rock, like the case in the north of the Iberian Peninsula. The sanctuary of La Tuiza in Lubian (Zamora, northwest of Spain) was built with the granite of Calabor. This sanctuary dates from the 18th century, and was declared as Cultural Interest [...]
Distributed Acoustic Sensing for aftershock monitoring: the case of the 2019 Mw 4.9 Le Teil earthquake
Published: 2024-01-30
Subjects: Geophysics and Seismology
Recent developments in Distributed Acoustic Sensing (DAS) have greatly expanded our capabilities for dense geophysical instrumentation by tapping into existing (but unused) fibre-optic telecommunication networks. Leveraging these so-called "dark fibres" permits an extremely rapid deployment of thousands of vibration sensors over distances of several tens of kilometres, which is ideal for rapid [...]
Gender diversity in editorial boards of scientific journals. Some earth science case studies for a geoethical reflection.
Published: 2024-01-30
Subjects: Engineering
Any scientific area can benefit from the contributions of a diverse society. Upon reflection, many notable achievements have been made by women to the advancement of science, but they were not highlighted enough. Such was the case of Hedy Lamarr, who co-authored the development of a radio guidance system (the start of the present Wi-Fi) or Rosalind Franklin, who contributed enormously to the [...]