Skip to main content

Preprints

There are 5976 Preprints listed.

Geological evidence confirms the staircase patterns of Earth’s rotation deceleration from the Neoproterozoic to the Mesozoic Era

He Huang, Chao Ma, Matthias Sinnesael, et al.

Published: 2023-10-02
Subjects: Earth Sciences, Environmental Sciences

Due to tidal dissipation, the Earth’s rotation has been slowing down, but the past rates of this process remain subject of debate. Here we conducted a comprehensive cyclostratigraphic analysis of eight geological datasets to further constrain the Earth's rotation history from the Neoproterozoic to Mesozoic. Our results allow us to further test theoretical physical tidal models, and support a [...]

Flight quotas outperform focused mitigation strategies in reducing the carbon footprint of academic travel

Tamara Ben Ari, Gaëlle Lefort, Jérome Mariette, et al.

Published: 2023-10-02
Subjects: Sustainability

The carbon footprint of academia has become a prominent concern and a burgeoning research area, with a notable focus on greenhouse gas emissions (GHG) from research-related travels. Mitigation strategies often promote alternatives, such as developing virtual communication or adopting sustainable transportation modes for short distances. While more ambitious strategies involving the transformation [...]

Modelling lateral meltwater flow and superimposed ice formation atop Greenland's near-surface ice slabs

Nicole Clerx, Horst Machguth, Andrew Tedstone, et al.

Published: 2023-10-02
Subjects: Glaciology, Hydrology

At high elevations on the Greenland ice sheet meltwater percolates and refreezes in place, and hence does not contribute to mass loss. However, meltwater generation and associated surface runoff is occurring from increasingly higher altitudes, causing changes in firn stratigraphy that have led to the presence of near-surface ice slabs. These ice slabs force meltwater to flow laterally instead of [...]

Contemporary and Relic Waters Strongly Decoupled in Arid Alpine Environments

Brendan James Moran, David F Boutt, Lee Ann Munk, et al.

Published: 2023-10-02
Subjects: Other Physical Sciences and Mathematics

Deciphering the dominant controls on interconnections between groundwater, surface water, and climate is critical to understanding water cycles in arid environments, yet persistent uncertainties in the fundamental hydrology of these systems remain. The growing demand for critical minerals such as lithium and associated water demands in these arid environments has amplified the urgency to address [...]

The Holocene to Modern Fraser River Delta, Canada: Geological History, Processes, Deposits, Natural Hazards, and Coastal Management

Andrew La Croix, Shahin Dashtgard, Korhan Ayranci, et al.

Published: 2023-10-01
Subjects: Physical Sciences and Mathematics

The Fraser River Delta (FRD) is a large sedimentary system and home to Metro Vancouver, situated within the unceded territories of several First Nations. This review provides an overview of the geological evolution of the FRD, connecting hydrodynamic processes with sedimentary deposits across its diverse environments, from the river to the delta slope. The study emphasizes the implications of [...]

Thermo-hydraulic analysis of desiccation cracked soil strata considering ground temperature and moisture dynamics under the influence of soil-atmosphere interactions

Milad Jabbarzadeh, Hamed Sadeghi, Saeed Tourchi, et al.

Published: 2023-09-27
Subjects: Engineering

Global warming and climate change significantly affect ground temperature and flow patterns. Moreover, areas prone to cracking experience intensified temperature and moisture variations. Therefore, the aim of this study is to investigate ground temperature and moisture dynamics considering soil-atmosphere interaction through a coupled thermo-hydraulic analysis. Heat transfer, advective, and [...]

Benthic habitat mapping: A review of three decades of mapping biological patterns on the seafloor

Benjamin Misiuk, Craig J. Brown

Published: 2023-09-26
Subjects: Life Sciences, Physical Sciences and Mathematics

What is benthic habitat mapping, how is it accomplished, and how has that changed over time? We query the published literature to answer these questions and synthesize the results quantitatively to provide a comprehensive review of the field over the past three decades. Categories of benthic habitat maps are differentiated unambiguously by the response variable (i.e., the subject being mapped) [...]

Revisiting oxygen-18 and clumped isotopes in planktic and benthic foraminifera

Mathieu Daëron, William Robert Gray

Published: 2023-09-26
Subjects: Earth Sciences, Environmental Sciences

Foraminiferal isotopes are widely used to study past oceans, with different species recording conditions at different depths. Their δ18O values record both seawater oxygen-18 and temperature according to species-specific fractionation factors, while their Δ47 signatures likely depend only on temperature. We describe an open-source framework to collect/combine data relevant to foraminiferal [...]

The Balanced Billion

Ross Mitchell, David A.D. Evans

Published: 2023-09-26
Subjects: Earth Sciences

There is a mid-Proterozoic stretch of Earth’s history (roughly 1.9–0.9 Ga) called, non-affectionately, the “boring billion”. The moniker was first inspired several decades ago by the apparent absence of any significant carbon isotope anomalies and was linked to the relatively “boring” interval in between Earth’s broadly two-step pattern in atmospheric oxygenation. However, in light of (i) the [...]

Combined genomic and imaging techniques show intense arsenic enrichment caused by detoxification in a microbial mat of the Dead Sea shore

Camille Thomas, Montserrat Filella, Danny Ionescu, et al.

Published: 2023-09-26
Subjects: Biogeochemistry, Environmental Microbiology and Microbial Ecology Life Sciences, Geochemistry, Paleobiology

Microbial mats and microbialites are essential tools for reconstructing early life and its environments. To better understand microbial trace element cycling, a microbial mat was collected from the sinkhole systems of the western shores of the Dead Sea, a dynamic environment exhibiting diverse extreme environments. Intense arsenic enrichment (up to 6.5 million times higher than current water [...]

Reliability of Raman analyses of CO2-dominated fluid inclusions as a rapid barometer at Kīlauea

Charlotte Laila DeVitre, Penny Wieser

Published: 2023-09-26
Subjects: Physical Sciences and Mathematics

Interpreting signals of volcanic unrest requires knowledge of the architecture of the magmatic system, particularly the depths at which magmas are stored. Such information can also be vital to help predict changes in eruptive style and vigour. However, popular petrological tools to assess magma storage depths (e.g., melt inclusions) are costly, present large uncertainties, and are too slow for [...]

Reproducing the Mid-Piacenzian Warm Period Climate in the 2020s.

Richard Michael BLABER

Published: 2023-09-25
Subjects: Physical Sciences and Mathematics

The current expectation of climatologists is that levels of atmospheric carbon dioxide (CO2) and other greenhouse gases, such as methane (CH4) and nitrous oxide (N2O), will correspond, in the 2020s, to an increase in mean annual global near-surface atmospheric temperature of less than 1.5°C above the pre-industrial Holocene norm (1750 baseline; atmospheric CO2 = 278 ppm). This paper will argue, [...]

No respite from permafrost-thaw impacts in absence of a global tipping point

Jan Nitzbon, Thomas Schneider von Deimling, Mehriban Aliyeva, et al.

Published: 2023-09-25
Subjects: Biogeochemistry, Climate, Earth Sciences, Geomorphology, Hydrology, Oceanography and Atmospheric Sciences and Meteorology, Physical Sciences and Mathematics

Arctic permafrost, the largest non-seasonal component of Earth’s cryosphere, contains a significant climate-sensitive carbon pool. Its potential for loss due to climatic changes leading to a global tipping point, where thawing accelerates with disproportionate impacts, remains debated. Here, we provide an integrative perspective on this question, building on a cross-disciplinary meta-analysis of [...]

Space-time data-driven modeling of precipitation-induced shallow landslides in South Tyrol, Italy

Mateo Moreno, Luigi Lombardo, Alice Crespi, et al.

Published: 2023-09-25
Subjects: Engineering, Physical Sciences and Mathematics

Shallow landslides represent potentially damaging processes in mountain areas worldwide. These geomorphic processes are usually caused by a combination of predisposing, preparatory, and triggering environmental factors. At regional scales, data-driven methods have been used to model shallow landslides by addressing the spatial and temporal components separately. So far, few studies have explored [...]

Accuracy of UAV mapping of Natura 2000 forest, wetland and grassland habitats: Do we need more seasons or more spectral bands?

Petra Šímová, Jiří Prošek, Petr Klápště, et al.

Published: 2023-09-22
Subjects: Biodiversity, Earth Sciences, Environmental Sciences, Research Methods in Life Sciences

Mapping and monitoring of Natura 2000 habitats (Habitat Directive 92/43/EEC) is one of the key activities to ensure the protection of natural habitats in Europe. Remote sensing can help to acquire high-quality maps of the distribution and conservation status of Natura 2000 habitats, for example through classifying multispectral data. However, due to the high number of habitats (classes) [...]

search

You can search by:

  • Title
  • Keywords
  • Author Name
  • Author Affiliation