Preprints
There are 4713 Preprints listed.
Year-long benthic measurements of environmental conditions indicate high sponge biomass is related to strong bottom currents over the Northern Labrador shelf
Published: 2024-01-22
Subjects: Marine Biology, Oceanography, Other Oceanography and Atmospheric Sciences and Meteorology
Deep-sea sponge grounds are distributed globally and are considered hotspots of biological diversity and biogeochemical cycling. To date, little is known about the environmental constraints that control where deep-sea sponge grounds occur and what conditions allow high sponge biomass to develop in the deep sea. Here, we characterize oceanographic conditions at two contrasting high- and [...]
UNESCO Global Geoparks as useful sceneries to disseminate science and raise awareness of geological risks: the case of Las Loras Geopark (Spain)
Published: 2024-01-22
Subjects: Education, Engineering
Natural and anthropic hazards derived from climate change are endangering heritage and society. Geoheritage is vulnerable. Nowadays we are witnessing the destruction of monuments with high emotional significance due to wars, but climate change is also contributing to the loss of the same cultural heritage. Prevention is often the best way to protect geoheritage from disappearing and society is [...]
Recognizing diversity in wetlands and farming systems to support sustainable agriculture and conserve wetlands
Published: 2024-01-20
Subjects: Life Sciences
Agriculture is a main driver of global decline in wetlands, but in addressing its impact the diversity in agricultural production systems and their catchment interactions must be recognized. In this paper we review the impacts of food production systems on wetlands to seek a better understanding of agriculture-wetland interactions and identify options for increasing sustainability. Eight farming [...]
The numerical evaluation of the effect of Geotextile sample size on the behavior of reinforced cohesive soil
Published: 2024-01-19
Subjects: Civil and Environmental Engineering, Civil Engineering, Engineering, Geotechnical Engineering
The effect of sample size is a phenomenon that involves the dependence of resistance on the size of the tested sample, where smaller samples exhibit higher resistance compared to larger ones. Due to the importance and sensitivity of determining the resistances of laboratory samples for use in design, codes, and standards, efforts are made to minimize the effects of sample size. This issue holds [...]
Coping with Information Extraction from In-Situ Data Acquired in Natural Streams
Published: 2024-01-19
Subjects: Physical Sciences and Mathematics
Flood waves propagating in natural streams are highly complex flow situations with intricate dependencies among flow variables that are still not well understood. The most relevant information for deciphering these dependencies is extracted from continuous in-situ measurements acquired through high sampling frequency with special attention to the magnitude and timing of the hydrograph peaks. The [...]
Quaternary and Pliocene sea-level changes at Camarones, central Patagonia, Argentina
Published: 2024-01-19
Subjects: Earth Sciences, Geology, Geomorphology, Geophysics and Seismology, Tectonics and Structure
Geological indicators of past relative sea level changes are fundamental to reconstruct the extent of former ice sheet during past interglacials, which are considered analogs for future climate conditions. Four interglacials, dating from Holocene to Pliocene, have left sea-level imprints in the proximity of the coastal town of Camarones in Central Patagonia, Argentina. Sea-level index points were [...]
Model Ensemble with Dropout for Uncertainty Estimation in Binary Sea Ice or Water Segmentation using Sentinel-1 SAR
Published: 2024-01-19
Subjects: Applied Statistics, Environmental Monitoring, Signal Processing
Despite the growing use of deep learning in sea ice mapping with SAR imagery, the study of model uncertainty and segmentation results remains limited. Deep learning models often produce overconfident predictions, a concern in sea ice mapping where misclassification can impact marine navigation safety. We incorporate and compare dropout and model ensemble within a convolutional neural network [...]
Assessing the Effects of Fjord Geometry on Greenland Tidewater Glacier Stability
Published: 2024-01-19
Subjects: Earth Sciences
Tidewater glaciers advance and retreat in unpredictable ways, complicating the task of forecasting the evolution of individual glaciers and the overall Greenland Ice Sheet, much of which is drained by tidewater glaciers. Past observational research has identified a set of processes collectively known as the Tidewater Glacier Cycle (TGC) to describe tidewater glacier evolution in four stages: the [...]
Experimental Modelling of Water-Wave Interactions with a Flexible Beam
Published: 2024-01-19
Subjects: Engineering, Physical Sciences and Mathematics
A series of fluid-structure-interaction (FSI) experiments is presented for studying water-wave interactions with a flexible beam in a wide range of sea conditions, thereby yielding a repository of FSI test-case data. The aim is to use these experimental data in order to validate FSI solvers commonly employed by the maritime industry in the design of fixed-foundation, offshore wind turbines. The [...]
Occurrences, distribution and sources of Pharmaceuticals and Personal Care Products (PPCPs) in the mangrove dominated estuaries in the central part of the Indian Sundarbans, a world heritage site.
Published: 2024-01-18
Subjects: Education
This study aimed to provide the baseline report on the occurrence of five emerging contaminants namely Phenols, Triclosan, NSAIDs, Phthalate and Parabens under pharmaceuticals and personal care products (PPCPs) in the surface water of Indian Sundarbans estuarine system. The emerging contaminants of PPCPs were investigated from the two estuaries in the central of Indian Sundarbans namely Thakuran [...]
Development of metrics and indices for assessing national progress on climate risk, adaptation and dissonance based on observations, perceptions, and projections.
Published: 2024-01-18
Subjects: Planetary Sciences
The 28th Conference of the Parties (COP28) included the first Global Stocktake (GST) as part of the implementation of the Paris Agreement. GST is a five-yearly assessment of the state and advancements in global climate action and aims to help national governments keep track of their climate ambitions and implementation progress. This paper contributes to the discussion through the analysis of [...]
Assessing the Influence of Temperature on Slope Stability in a Temperate Climate: A Nationwide Spatial Probability Analysis in Italy
Published: 2024-01-18
Subjects: Geomorphology, Geotechnical Engineering, Multivariate Analysis
Among the factors controlling the stability of slopes, the role of temperature remains poorly understood, especially in temperate climates. Experiments reveal the coupled thermo-hydro-mechanical (THM) nature of clay behaviours; however, field evidence of thermally-induced landslides is scarce. The complexity of THM processes hinders the construction of a temperature-related variable, usable in [...]
Apportioning sources of chemicals of emerging concern along an urban river with inverse modelling
Published: 2024-01-18
Subjects: Environmental Monitoring, Environmental Sciences
Concentrations of chemicals in river water provide crucial information for assessing environmental exposure to fertilisers and insecticides, heavy metals, illicit drugs, pathogens, pharmaceuticals, plastics and perfluorinated substances among others. However, using concentrations measured along waterways to identify sources of contaminants and predict their fate is complicated by downstream [...]
Comparing Continuous Methane Monitoring Technologies for High-Volume Emissions: A Single-Blind Controlled Release Study
Published: 2024-01-18
Subjects: Engineering
Methane emissions from oil and gas operations are a primary concern for climate change mitigation. While traditional methane detection relies on periodic surveys that yield episodic data, continuous monitoring solutions promise to offer consistent insights and a richer understanding of emission inventories. Despite this promise, the detection and quantification ability of continuous monitoring [...]
DASCore: a Python Library for Distributed Fiber Optic Sensing
Published: 2024-01-18
Subjects: Earth Sciences, Geophysics and Seismology, Numerical Analysis and Scientific Computing
In the past decade, distributed acoustic sensing (DAS) has enabled many new monitoring applications in diverse fields including hydrocarbon exploration and extraction; induced, local, regional, and global seismology; infrastructure and urban monitoring; and several others. However, to date, the open-source software ecosystem for handling DAS data is relatively immature. Here we introduce DASCore, [...]