Preprints
There are 4717 Preprints listed.
Our first Anthroponomic task: Remove the infrared pea soup
Published: 2023-08-01
Subjects: Oceanography and Atmospheric Sciences and Meteorology
Some underappreciated aspects of the climate. [Idealization]: Earth has a partially IR-opaque 5-km-deep tropospheric layer whose (slowly rising) top radiates waste heat to space at the -18°C Stefan-Boltzmann temperature and below which the temperature increases 33°C by adiabatic compression. Fossil-fuel CO2 has deepened this layer by 308 m and added 2°C of Anthropogenic Global Warming. [...]
Application of the authigenic 10Be/9Be dating to constrain the age of a long-lived lake and its regression in an isolated intermontane basin: The case of Late Miocene Lake Turiec, Western Carpathians
Published: 2023-08-01
Subjects: Earth Sciences, Geochemistry, Physical Sciences and Mathematics, Sedimentology, Stratigraphy
The depositional record of intermontane basins provides a valuable archive of the temporal evolution of orogenic belts; their common isolated nature may, however, hinder the efficient usage of standard approaches to constrain the age of a basin fill. In this paper the authigenic 10Be/9Be dating method is employed and tested to construct an age model of the existence and regression of Lake Turiec, [...]
Ultrasonic degradation of GenX (HFPO-DA) - Performance comparison to PFOA and PFOS at high frequencies
Published: 2023-08-01
Subjects: Engineering
Sonolytic degradation kinetics of hexafluoropropylene oxide-dimer acid (HFPO-DA or GenX) were studied for the first time at four high ultrasonic frequencies (375, 580, 860 and 1,140 kHz) and three power densities (200, 300 and 400 W/L), and compared to the degradation of previously studied perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS). The frequency of 580 kHz displayed [...]
The paleoecology of Rano Kao and the Environmental dynamics on Rapa Nui -the last 15,000 years
Published: 2023-07-31
Subjects: Physical Sciences and Mathematics
Summary Recent Research at Ava Ranga Uka includes the coring of four water sites along an 8km long collapsed lava tube to find out if significant carbon and nitrogen relationships to drought and rainfall fluctuations could be found on the terrestrial landscape. In 2005 we conducted the first paleoecological studies using oxygen isotopes were conducted in Rano Kao and the core KAO3 produced [...]
Experimental results, integrated model validation, and economic aspects of agrivoltaic systems at northern latitudes
Published: 2023-07-31
Subjects: Agriculture, Other Mechanical Engineering
Agrivoltaic systems, which allow the coexistence of crop and electricity production on the same land, are considered an integrated water-energy-food nexus solution to allow the simultaneous attainment of conflicting Sustainable Development Goals. This study aims to analyse experimental results on ley grass yield and quality response to shadings in the first agrivoltaic system in Sweden and [...]
Unsupervised clustering identifies thermohaline staircases in the Canada Basin of the Arctic Ocean
Published: 2023-07-28
Subjects: Oceanography, Oceanography and Atmospheric Sciences and Meteorology, Physical Sciences and Mathematics
Thermohaline staircases are a widespread stratification feature that impact the vertical transport of heat and nutrients and are consistently observed throughout the Canada Basin of the Arctic Ocean. Observations of staircases from the same time period and geographic region form clusters in temperature-salinity ($T$--$S$) space. Here, for the first time, we use an automated clustering algorithm [...]
3D shear wave velocity structure in the southwestern Okinawa Trough
Published: 2023-07-28
Subjects: Geophysics and Seismology
The southwestern Okinawa Trough is an active back-arc basin, extending and rifting within the continental lithosphere. Studying the southwestern Okinawa Trough is important for understanding the processes involved in the opening and development of a back-arc basin. At various times between 2010 and 2018, the Institute of Earth Sciences, Academia Sinica, Taiwan deployed 34 Ocean Bottom [...]
The uncertain future of mountaintop-removal-mined landscapes 1: How mining changes erosion processes and variables
Published: 2023-07-28
Subjects: Geomorphology
Surface mining may be humanity's most tangible impact on Earth's surface and will become more prevalent as the energy transition progresses. Prediction of post-mining landscape change can help mitigate environmental damage, but requires understanding how mining changes geomorphic processes and variables. Here we investigate surface mining's complex influence on surface processes in a case study [...]
How big is a boulder? Evaluating fixed and process-based definitions for boulders
Published: 2023-07-28
Subjects: Life Sciences, Physical Sciences and Mathematics
Boulders are globally widespread and influence landscape processes across hillslopes, coasts, rivers and extra-terrestrial settings. Boulders are described as particles, sufficiently large, that the movement of an individual grain promotes substantial geomorphic change. Moving beyond this conceptual definition, however, requires a somewhat arbitrary decision of how to define a minimum boulder [...]
Estimating the silica content and loss-on-ignition in the North American Soil Geochemical Landscapes datasets: a recursive inversion approach
Published: 2023-07-28
Subjects: Geochemistry, Natural Resources and Conservation, Soil Science
A novel method of estimating the silica (SiO2) and loss-on-ignition (LOI) concentrations for the North American Soil Geochemical Landscapes (NASGL) project datasets is proposed. Combining the precision of the geochemical determinations with the completeness of the mineralogical NASGL data, we suggest a ‘reverse normative’ or inversion approach to calculate first the minimum SiO2, water (H2O) and [...]
Onsite sanitation systems and contamination of groundwater: A systematic review of the evidence for risk using the source-pathway-receptor model.
Published: 2023-07-28
Subjects: Other Engineering
The level of risk that onsite sanitation systems (OSS) pose to groundwater quality remains uncertain. The link between contamination and OSS can only be proved if the source, pathway, and receptor (SPR) are investigated and confirmed when assessing contamination. The literature on the connection between OSS and groundwater contamination has been reviewed several times. However, previous reviews [...]
A scoping review on climate change education
Published: 2023-07-28
Subjects: Planetary Sciences
Escalating climate impacts predicted in the past decades are now a reality almost everywhere on the planet, and the time-critical dimension of the climate crisis means that the coming years will be instrumental in securing a climate resilient future for generations to come. Education is central to promoting climate action, yet the role that climate change education plays in advancing climate [...]
GroMoPo: A Groundwater Model Portal for Findable, Accessible, Interoperable, and Reusable (FAIR) modeling
Published: 2023-07-26
Subjects: Civil Engineering, Hydrology, Water Resource Management
N/A (no abstract)
Evaluating Climate Signals on Global Coastal Shoreline Positions A commentary on “Influence of El Niño on the variability of global shoreline position” by Almar and colleagues.
Published: 2023-07-26
Subjects: Climate, Geomorphology, Oceanography, Other Earth Sciences, Other Environmental Sciences
Almar and colleagues (2023) are correct in stating that, “understanding and predicting shoreline evolution is of great importance for coastal management.” Amongst the different timescales of shoreline change, the interannual and decadal timescales are of particular interest to coastal scientists as they reflect the integrated system response to the Earth’s climate and its natural modes of [...]
Sustainable irrigation reduces arsenic bioavailability in fluvio-alluvial soils promoting microbial responses, high rice productivity and economic profit
Published: 2023-07-26
Subjects: Agricultural Science, Agriculture, Agronomy and Crop Sciences Life Sciences, Biodiversity, Environmental Studies, Microbiology
Minimizing arsenic (74.92As33) loading into rice plants, we suggest adopting alternating wetting and drying (AWD) irrigation as a sustainable water management strategy allowing greater silicon (28.08Si14) availability. This two-year field-based project is the first report on AWD's impact on As-Si distribution in fluvio-alluvial soils of the entire Ganga valley (24 study sites divided into six [...]