Preprints
There are 5976 Preprints listed.
Integrating Vision-Based AI and Language Models for Real-Time Water Pollution Surveillance
Published: 2024-05-01
Subjects: Electrical and Computer Engineering, Engineering
Water pollution has become a major concern in recent years, affecting over 2 billion people worldwide, according to UNESCO. This pollution can occur naturally, such as through algal blooms, or it can be man-made when toxic substances are released into water bodies like lakes, rivers, springs, and oceans. To address this issue and monitor surface-level water pollution in local water bodies, an [...]
Study on the Assessment of the Development Level of Digital Economy in the Yellow River Basin Economic Zone and the Evolution of Time and Space
Published: 2024-05-01
Subjects: Statistics and Probability
Based on the Statistical Classification of the Digital Economy and Its Core Industries (2021) and considering the characteristics of the Yellow River Basin Economic Belt, this paper selects 25 secondary indicators from 5 dimensions (digital infrastructure, digital industrialization, industrial digitization, digital innovation and agricultural modernization). A scientific and practical evaluation [...]
SWOT Data Assimilation with Correlated Error Reduction: Fitting Model and Error Together
Published: 2024-05-01
Subjects: Oceanography, Oceanography and Atmospheric Sciences and Meteorology
The Surface Water Ocean Topography (SWOT) satellite mission provides high-resolution two-dimensional sea surface height (SSH) data with swath coverage. However, spatially correlated errors affect these SSH measurements, particularly in the cross-track direction. The scales of errors can be similar to the scales of ocean features. Conventionally, instrumental errors and ocean signals have been [...]
Application of Large Language Models in Developing Conversational Agents for Water Quality Education, Communication and Operations
Published: 2024-05-01
Subjects: Engineering
The rapid advancement of Large Language Models (LLMs), such as ChatGPT, has opened new horizons in the field of Artificial Intelligence (AI), revolutionizing the way we can engage with and disseminate complex information. This paper presents an innovative application of ChatGPT in the domain of Water Quality (WQ) management, through the development of an AI Hub. The Hub encompasses a suite of [...]
Is Net Zero Necessary? Meeting the Paris Agreement Temperature Target with 39% Global Emissions Reductions by the 2070s
Published: 2024-04-30
Subjects: Physical Sciences and Mathematics
Global Carbon Project (GCP) data shows that natural processes have been sequestering atmospheric CO2 on a yearly basis in proportion to how much the atmospheric CO2 concentration has risen above pre-Industrial levels, the so-called CO2 “sink rate”. Here it is argued that the future trajectory of the sink rate has not been adequately addressed, which has led to overestimation of future atmospheric [...]
Nurturing a new industry rooted in geoscience: stakeholder insights on minewater thermal in Scotland.
Published: 2024-04-30
Subjects: Engineering, Social and Behavioral Sciences
Heat decarbonisation is crucial for climate action and to transition towards a sustainable society. Abandoned, flooded mines can be used to provide low-carbon heating and cooling for buildings or as thermal energy storage for district heating networks. Despite the plentiful potential resource that legacy mining infrastructure offers, the current utilisation of minewater thermal resources in the [...]
Carbonate clumped isotope values compromised by nitrate-derived NO2 interferent
Published: 2024-04-30
Subjects: Earth Sciences, Geochemistry
∆47 based clumped isotope thermometry has enabled reconstruction of Earth’s surface temperatures independent of the source of oxygen within the carbonate. It has been postulated that carbonate samples can contain contaminants that cause isobaric interferences, compromising measured ∆47 values and reconstructed temperatures. The exact nature of contaminants and isobaric interferents, however, [...]
The linked complexity of coseismic and postseismic faulting revealed by seismo-geodetic dynamic inversion of the 2004 Parkfield earthquake
Published: 2024-04-26
Subjects: Physical Sciences and Mathematics
Several regularly recurring moderate-size earthquakes motivated dense instrumentation of the Parkfield section of the San Andreas fault, providing an invaluable near-fault observatory. We present a seismo-geodetic dynamic inversion of the 2004 Parkfield earthquake, which illuminates the interlinked complexity of faulting across time scales. Using fast-velocity-weakening rate-and-state friction, [...]
An analysis of the dynamic range of Distributed Acoustic Sensing for Earthquake Early Warning
Published: 2024-04-26
Subjects: Geophysics and Seismology
Owing to its deployment and sensing characteristics, Distributed Acoustic Sensing (DAS) has been touted as a promising technology for low-cost and low-latency Earthquake Early Warning (EEW). While preliminary experiments conducted by several research groups have yielded encouraging results, it must be acknowledged that these EEW feasibility studies were performed only on low-magnitude events. [...]
Mapping microplastic movement: A phase diagram to predict microplastics modes of transport
Published: 2024-04-26
Subjects: Civil and Environmental Engineering
Microplastics pose numerous threats to aquatic environments, yet general understanding of the mechanisms governing their transport remains limited. Drawing upon research on natural sediment provides a valuable resource to address this knowledge gap. One key dimensionless number used to describe sediment transport is the transport stage, referring to the ratio between the fluids shear velocity and [...]
What triggers individual climate actions in different neighbourhoods? Individual, collective, cultural, and socio-structural factors
Published: 2024-04-25
Subjects: Environmental Studies
This paper takes a multi-perspective approach to understand drivers and barriers of climate action on the neighbourhood level in a selection of European neighbourhoods. The starting point for the analysis is the assumption that actions on the level of citizens to protect the climate are most motivating and promising, when conducted jointly within established social systems like neighbourhoods. [...]
A Review of the Migration of Hydrogen from the Planetary to Basin Scale
Published: 2024-04-24
Subjects: Physical Sciences and Mathematics
The occurrence of natural hydrogen and its sources have been reviewed extensively in the literature over the last few years, with current research across both academia and industry focused on assessing the feasibility of utilising natural hydrogen as an energy resource. However, gaps remain in our understanding of the mechanisms responsible for the large-scale transport of hydrogen and migration [...]
Numerical simulation of the 2D trajectory of a non-buoyant fluid parcel under the influence of inertial oscillation
Published: 2024-04-24
Subjects: Atmospheric Sciences, Fluid Dynamics, Numerical Analysis and Computation, Numerical Analysis and Scientific Computing, Oceanography
The trajectory of non-buoyant fluid parcels under the influence of inertial oscillations is a pivotal phenomenon in geophysical fluid dynamics, impacting processes such as tracer transport, pollutant dispersion, and the dynamics of marine organisms. This study presents a comprehensive numerical investigation of the two-dimensional trajectory of a non-buoyant fluid parcel subjected to inertial [...]
Ongoing Research Project "THE STATUS OF NOISE POLLUTION OF SUST CAMPUS, SYLHET, BANGLADESH: A GIS-BASED NOISE MAPPING
Published: 2024-04-24
Subjects: Public Health
This study investigates the status of noise pollution at the Shahjalal University of Science and Technology (SUST) campus in Sylhet, Bangladesh, employing a GIS-based approach to map and analyze noise levels across different areas of the campus. The research was motivated by the growing concern over environmental noise as a public health issue, particularly in educational settings, where it can [...]
High–precision determination of carbon stable isotope in silicate glasses by secondary ion mass spectrometry: Evaluation of international standards
Published: 2024-04-24
Subjects: Analytical Chemistry, Geochemistry
Secondary ion mass spectrometry (SIMS) has been used for isotope analysis of volatile components dissolved in silicate melts for decades. However, carbon in situ stable isotope analysis in natural silicate glasses has remained particularly challenging, with the few published attempts yielding high uncertainties. In this context, we characterized 31 reference silicate glasses of basaltic and [...]