Preprints
There are 6976 Preprints listed.
Stories, Storytelling and Storylines for Geoscience Communication
Published: 2024-12-19
Subjects: Physical Sciences and Mathematics
Geoscientists need to recognize and embrace our role as storytellers, so that we can more effectively use storytelling to advance our science. As narrative-driven storylines become an increasing tool in disaster and climate risk communications, understanding the ‘science’ of stories and storytelling becomes an ever more critical geoscientific skillset.
Disappearance of Homo floresiensis from Liang Bua alongside seasonal aridification of Flores 61,000-47,000 years ago
Published: 2024-12-10
Subjects: Atmospheric Sciences, Climate, Environmental Indicators and Impact Assessment, Fresh Water Studies, Geochemistry, Hydrology, Paleobiology, Physical Sciences and Mathematics, Speleology
The cause of the disappearance of the primitive hominin, Homo floresiensis, from the Indonesian island of Flores ~50,000 years ago is a key question in palaeoanthropology. The potential roles of human agency and climate change continue to be debated, but the history of freshwater availability critical to survival at the type locality, Liang Bua, remains unknown. Although speleothem 18O is used [...]
Climate-Induced Sea-Level Rise Implications on Archaeological Taonga at Te Pokohiwi ō Kupe – The Wairau Bar, Aotearoa New Zealand
Published: 2024-12-11
Subjects: Earth Sciences, Environmental Sciences, Oceanography and Atmospheric Sciences and Meteorology
The northwest portion of Te Pokohiwi ō Kupe (the Wairau Bar) in the Marlborough Region is where one of Aotearoa New Zealand’s earliest archaeological heritage sites dating back to the early 1300’s is located. This paper describes a baseline study to map the effects of present-day and future sea-levels on archaeological heritage land at Te Pokohiwi ō Kupe. Results suggest that approximately 20% of [...]
Evaluation and prediction of the Effects of Planetary Orbital Variations to Earth’s Temperature Changes
Published: 2024-12-11
Subjects: Education, Engineering, Physical Sciences and Mathematics
Existing climate studies mainly assessed the effect of greenhouse gases and aerosols, among other forcings on Earth’s temperature. None of them has not evaluated the effect of the planetary orbital changes on Earth’s temperature. Here, we deconvolved the effects of greenhouse gases and planetary orbital changes on Earth’s temperature and to forecast the latter at different time scales. Our [...]
Systemic impacts of low-carbon transition policies for housing in Innsbruck: Mapping the intersections of vulnerability and social justice with affected citizens and stakeholders
Published: 2024-12-11
Subjects: Human Geography
Decarbonizing the building sector is a key priority in the European energy transition, as it is responsible for more than a third of the EU's GHG emissions. To boost energy renovation rates and efforts to phase out fossil fuel-based heating systems, current energy policy directives tar-get in particular the promotion of energy efficiency. However, implementing technology-oriented solutions for [...]
Small pluton construction through sills stacking, amalgamation and differentiation: Insight from the Beauvoir granite (Massif Central, France)
Published: 2024-12-11
Subjects: Earth Sciences
The kinematics, modes of assembly, and the processes governing the evolution of magmas shape plutonic intrusions. Granite bodies have been suggested to emplace incrementally, with successive magmatic batches locally solidified as dikes or sills. Yet, the complexity and longevity of large-scale plutons hinders a unified model for their emplacement and concomitant differentiation. This is [...]
Gaia, revisited: atmospheric carbon dioxide as a symptom of a vegetation ozone driven climate cycle
Published: 2024-12-13
Subjects: Oceanography and Atmospheric Sciences and Meteorology
A synoptic analysis of the history of climate science introduces all potential climate drivers. It is demonstrated that the Keeling curve can be seen to reflect yearly ocean CO2 emission minus yearly ocean CO2 uptake. It is also shown that the global carbon equation (GCE), at the foundation of present day climate models is not an equilibrium. This disequilibrium pertains to the neglect of the [...]
The Effects of Fluid Pre-Conditioning on the Deformational Response of a Laboratory Fault
Published: 2025-10-16
Subjects: Geophysics and Seismology, Hydrology
Situating place-based, community-engaged watershed research at Xwulqw'selu Sta'lo'
Published: 2024-12-12
Subjects: Environmental Engineering, Environmental Studies
Xwulqw'selu Sta'lo' is a culturally significant and salmon-bearing river facing significant challenges which Cowichan Tribes and the British Columbia Provincial Government are addressing with a first-of-its-kind watershed plan. Our research is deeply situated at Xwulqw'selu Sta'lo' and is grounded in interdisciplinary academic spheres of place-based research, water monitoring and modeling, [...]
Extreme warming of Amazon waters in a changing climate
Published: 2024-07-22
Subjects: Physical Sciences and Mathematics
In 2023, an unprecedented drought and heatwave severely impacted Amazon waters, leading to high mortality of fishes and river dolphins. Five of 10 lakes monitored showed exceptionally high daytime temperatures (>37°C), with one large lake reaching up to 41°C in the entire ~2-m deep water column, with up to 13°C of diel variation. Modeling show that high solar radiation, reduced water depth and [...]
A critical evaluation of fossil pollen records from the mangrove tree Pelliciera beyond the Neotropics: biogeographical and evolutionary implications
Published: 2024-12-13
Subjects: Paleontology
Pelliciera is a Neotropical mangrove tree restricted to a small region around the Panama Isthmus. In the past, this taxon was distributed across much of the Neotropics, reaching its maximum extent during the Oligo-Miocene. The occurrence of Pelliciera outside the Neotropics had been debated based on a few fossil pollen records from Africa and Europe, though many of these records have been [...]
Global Energy Sector Methane Emissions Estimated by using Facility-Level Satellite Observations
Published: 2025-05-06
Subjects: Other Physical Sciences and Mathematics, Physical Sciences and Mathematics
Methane emissions from energy sector facilities (oil, gas, and coal) represent a significant contribution to global greenhouse gas emissions with substantial mitigation potential. We estimate global 2023 methane emissions from energy sector point-sources using the high spatial resolution GHGSat satellite constellation. GHGSat detected 8.30±0.24 Mt yr-1 of methane emissions from 3,114 attributed [...]
Potential impacts of plant pests and diseases on trees and forests in the UK
Published: 2024-12-13
Subjects: Forest Biology, Forest Management, Terrestrial and Aquatic Ecology
Plant pests and diseases (PPDs) pose a serious threat to trees and forests globally. In the wake of the ash dieback epidemic, the UK Government instigated the UK Plant Health Risk Register (PHRR) to provide semi-quantitative estimates of invasion probability and impact on host plants for PPDs thought to pose a risk to the UK to help prioritize biosecurity activities. The PHRR currently contains [...]
Fingerprinting subduction margins using PCA profiles: A data science approach to assessing earthquake hazard
Published: 2025-01-21
Subjects: Earth Sciences, Statistical Methodology, Statistical Models, Tectonics and Structure
Giant earthquakes (MW ≥ 8.5) along subduction margins pose great hazards to coastal societies. While it is generally accepted that geological margin properties play a role, the controls on giant earthquake occurrence remain undetermined. Their long intermittence times and the comparatively short earthquake record obscure any correlations between margin properties and seismicity. This work [...]
Development of a dynamic true triaxial electromagnetic Hopkinson bar system
Published: 2024-12-16
Subjects: Engineering
Subsurface rock masses and rock engineering are typically subjected to multiaxial static stresses, often superimposed by multidirectional dynamic disturbances induced by seismic events, blast loading and mechanical vibrations, etc. A comprehensive understanding of the dynamic mechanical behavior and failure mechanisms of rocks under such coupled multiaxial or three-dimensional static and dynamic [...]