Preprints
There are 6976 Preprints listed.
Rise in Heat Related Mortality in the United States
Published: 2025-04-20
Subjects: Geography
Over the past century, extreme heat events (EHE) have become more frequent and intense, resulting in significant health impacts and economic challenges worldwide. In the United States, extreme heat is the leading weather-related cause of death, claiming more lives annually than hurricanes, floods, and tornadoes combined. However, the characteristics of EHEs can vary significantly between events [...]
Cumulative exposure to urban heat can affect the learning capacity of students and penalize the vulnerable and low-income young population
Published: 2025-04-20
Subjects: Other Engineering
Background: Elevated temperatures negatively impact human well-being, heighten mental health risks, and impair cognitive function, with young populations being especially vulnerable. Prolonged exposure to rising ambient temperatures further exacerbates these effects, potentially hindering student’s cognitive performance under extreme heat conditions. Objectives: This paper systematically reviews [...]
Topic: Mobility as Climate Change Adaptation in South Africa: Exploring the legal and policy significance of Artificial Intelligence.
Published: 2025-04-20
Subjects: Environmental Studies
The increasing reality of mobility linked to adverse impacts of climate change highlights an urgent need for nuanced and systematic research around climate mobility. While mobility is often used as a coping or adaptation strategy to escape climate impact, some mobility typifies and results in maladaptation. Protecting populations in vulnerable situations usually raises issues that test the limits [...]
Strengthening ITF and Weakening AMOC: Time Series Evidence of Trends and Causal Pathways to Agulhas Variability
Published: 2025-06-18
Subjects: Applied Statistics, Climate, Oceanography, Statistical Models
Multi-decadal observations of major ocean circulation systems reveal contrasting trends and complex inter-basin connectivity patterns that challenge traditional conceptualizations of global ocean circulation. Using non-parametric trend analysis, multi-method causality testing, and wavelet coherence techniques, we analyzed volume transport time series spanning 1984--2023 for the Indonesian [...]
Levels of Heavy Metals and Associated Human Health Risk Assessment at the Upper Genale-Dawa River Basin of Ethiopia
Published: 2025-04-20
Subjects: Public Health
This study investigates the concentration of heavy metals in the Upper Genale Dawa River Basin to assess water quality and potential health risks. The primary objective was to quantify the levels of heavy metals, and to evaluate the associated risks to human health, particularly concerning non-carcinogenic and carcinogenic effects. Water samples were purposely collected from 24 sites in the River [...]
Effects of Salinity on Menstrual and Reproductive Health: Insights from Coastal and Non-Coastal Areas of Bangladesh.
Published: 2025-04-20
Subjects: Public Health
AbstractBackground: Salinity intrusion in coastal regions of Bangladesh is a growing concern due to its potential impact on public health, particularly reproductive health among women. Exposure to saline water may contribute to a variety of health challenges, including menstrual irregularities and pregnancy complications.Objective: This study aimed to assess the reproductive health challenges [...]
Multidecadal loss of surface thermal structure in the largest marine upwelling ecosystems
Published: 2025-04-20
Subjects: Physical Sciences and Mathematics
Step horizontal gradients of sea surface temperature (SST) occur around upwelling cores, eddies, meanders, current boundaries, island-effect mixing areas, among many other oceanographic features. These thermally structured areas provide ideal turbulence for phytoplankton growth and biomass aggregation, triggering complex and abundant food webs, in turn exploited by populations of marine megafauna [...]
Socioecological drivers of water, sanitation, and hygiene (WASH) choices: A qualitative analysis of maternal perspectives in northwest Ecuador
Published: 2025-04-20
Subjects: Public Health
Household-level water, sanitation, and hygiene (WASH) interventions do not always achieve the expected health benefits. Research that considers WASH within a socioecological framework where climatic, infrastructural, economic, and individual factors are interconnected in influencing maternal choices can inform more effective WASH interventions. To understand WASH preferences and priorities under [...]
Array-based seismic measurements of OSIRIS-REx's re-entry
Published: 2024-08-23
Subjects: Earth Sciences, Geophysics and Seismology, Physical Sciences and Mathematics, Planetary Sciences
The return home of the OSIRIS-REx spacecraft in September 2023 marked only the fifth time that an artificial object entered the Earth's atmosphere at interplanetary velocities. Although rare, such events serve as valuable analogues for natural meteoroid re-entries; enabling study of hypersonic dynamics, shockwave generation, and acoustic-to-seismic coupling. Here, we report on the signatures [...]
Impact hypothesis as the cause of the formation of the Mariana Trench and the uplift of the Mid-Atlantic Ridge
Published: 2025-04-22
Subjects: Physical Sciences and Mathematics
My dissertation presents an original hypothesis suggesting that the Mariana Trench was formed by an oblique impact of a massive celestial body on Earth’s oceanic crust, and that the Mid-Atlantic Ridge represents its antipodal geodynamic effect. The hypothesis is supported by calculations of impact energy, simulations of shock wave propagation through Earth's interior, and models of mantle [...]
An integrated approach for characterizing and selecting climate change scenarios: Focusing on variability and extremeness
Published: 2025-04-24
Subjects: Engineering
This study presents a novel integrated approach for selecting optimal combinations of global climate models (GCMs) and shared socioeconomic pathways (SSPs) to assess the impact of climate change on the aquatic environment. The method proposed in this study considers the comprehensive spatial and temporal ranges of climate projections, specifically focusing on the variability and extremeness of [...]
Readapting PhaseNet to Laboratory Earthquakes: AEsNet, a Robust Acoustic Emission Picker Illuminating Seismic Signatures of Different Fault Gouge Materials
Published: 2025-01-14
Subjects: Earth Sciences, Geophysics and Seismology
Laboratory acoustic emissions (AEs) represent microslip events analogous to small- scale earthquakes, providing valuable insights into the mechanics of frictional instabilities. With technological advancements in acoustic monitoring, thousands of AE waveforms can now be collected in minutes of experimental time, requiring efficient methods for their detection and analysis. In this study, we [...]
The impact hypothesis as a mechanism for the origin of the Amazon basin - analysis of antipodal impacts of celestial bodies and their impact on global morphotectonics
Published: 2025-04-23
Subjects: Earth Sciences, Oceanography and Atmospheric Sciences and Meteorology, Other Physical Sciences and Mathematics, Physical Sciences and Mathematics
The Amazon Basin is the largest fluvial system on Earth, yet its central subsidence and asymmetrical drainage pattern remain partially unexplained by traditional geological models. This study introduces a novel impact-based hypothesis, proposing that the Amazon depression is a result of tectonic deformation at the intersection of seismic shockwaves originating from two major planetary impacts: [...]
Predicting Urban Heat-Related Illness Across U.S. Climate Regions and Demographics
Published: 2025-04-22
Subjects: Environmental Studies
We still know relatively little about how climate, demographics, built environment, and behaviors interact to drive hospitalizations during extreme heat events (EHEs).This study employed a discrete event system dynamics modeling approach to address two research questions about the relationship between EHEs and heat-related illnesses (HRIs): (1) How will changes in EHE frequencies, intensities, [...]
Rural-Urban schism: Access to improved water and sanitation in Sub-Sahara Africa
Published: 2025-04-22
Subjects: Public Health
Abstract Background: Access to potable water and adequate sanitation remains a major public health challenge, particularly in sub-Saharan Africa (SSA), where coverage is critically low, especially in rural areas. Despite progress, disparities between urban and rural populations persist, impacting health outcomes and overall well-being. Objective: This study aimed to identify factors influencing [...]